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Arizona Diamondbacks

Prospects Overview

Top 30 Prospects

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Player Reports

  1. 1. Corbin Carroll | OF
    Corbin Carroll
    Born: Aug 21, 2000
    Bats: L Throws: L
    Ht.: 5'10" Wt.: 165
    Drafted/Signed: HS--Seattle, 2019 (1st round).
    Signed By: Dan Ramsay.

    Hitting: 60. Power: 50. Running: 70. Fielding: 60. Arm: 45.

    TRACK RECORD: Carroll was viewed as an advanced high school hitter when the Diamondbacks selected him with the 16th overall pick in 2019 and signed him for $3,745,500 to forgo a UCLA commitment. He lived up to that billing during his pro debut, hitting .299/.409/.481 as he advanced to short-season Hillsboro. Carroll opened even more eyes with his play at the alternate training site in 2020, when he excelled against far more advanced pitchers. He looked so mature in his all-around game that some wondered, albeit prematurely, if he might be the rare fast-to-the-majors high school player.

    SCOUTING REPORT: Carroll is undersized physically at a listed 5-foot-10. That gives him something in common not only with other prospects in Arizona’s system but also Mookie Betts, Andrew Benintendi and Jackie Bradley Jr., all of whom were drafted by the Red Sox under Amiel Sawdaye, who now oversees amateur scouting for the D-backs. Carroll is strong, wiry and tremendously athletic. He has a fluid lefthanded swing he uses to spray hard line drives to all fields. His approach is mature beyond his years with an innate understanding of the strike zone, an ability to recognize spin and a knack for swinging at pitches on which he can do damage. Carroll is quick to make adjustments and showed during his time at the alternate training site that pitchers couldn’t get him out the same way twice. He has plus-plus speed and gets out of the box quickly, which allows him to beat out his share of infield hits. Carroll’s raw power is impressive and he can drive balls with authority in games, but evaluators caution he might be more of a 10-15 home run-type whose speed will help inflate his slugging percentages early in his career before he grows into more power as he matures. He projects as a plus defender in center field and can shift to both corners without issue. His fringe-average arm strength is the only part of his game that leaves something to be desired. Carroll’s excellent makeup and determined work ethic create optimism he will make the most of his abilities and reach his full potential.

    THE FUTURE: Carroll has played 42 career professional games and still has much to prove—including that he can maintain his level of play across a full season—but he has fewer areas of his game that need refining than most 20-year-olds. Many D-backs officials see Carroll as the player in their system most likely to become a star, with comparisons ranging from Benintendi to Adam Eaton to Johnny Damon.

  2. 2. Daulton Varsho | C/OF
    Daulton Varsho
    Born: Jul 2, 1996
    Bats: L Throws: R
    Ht.: 5'10" Wt.: 205
    Drafted/Signed: Wisconsin-Milwaukee, 2017 (2nd round supplemental).
    Signed By: Rick Short.

    Hitting: 55. Power: 50. Running: 55. Fielding: 50. Arm: 45.

    TRACK RECORD: Varsho, the son of former major leaguer Gary Varsho, performed well at summer camp in July before earning a big league callup a week into the season. Things didn’t go well initially, but the competitiveness of Varsho’s at-bats improved as the season progressed. He posted an .822 OPS over his final 74 plate appearances, looking more like the productive hitter he was in the minors.

    SCOUTING REPORT: Like many hitters in their first big league exposure, Varsho got caught in between during many of his early at-bats and was either too aggressive or too passive. He got more comfortable as the season progressed and began showing the decisive, compact swing that has long yielded predictions of an above-average hitter with average power. Varsho is a natural catcher, but his above-average speed and surprising athleticism convinced the D-backs to try him out in center field. He played both spots in his big league debut and was passable at each. His below-average arm strength was more noticeable in the outfield than behind the plate.

    THE FUTURE: Varsho doesn’t have much left to prove in the minors, but he also doesn’t have a clear role on the 2021 big league roster. He’ll try to win a spot in spring training and carry over his strong finish from 2020.

  3. 3. Geraldo Perdomo | SS
    Geraldo Perdomo
    Born: Oct 22, 1999
    Bats: B Throws: R
    Ht.: 6'3" Wt.: 184
    Drafted/Signed: Dominican Republic, 2016.
    Signed By: Junior Noboa/Elvis Cruz.

    Hitting: 55. Power: 40. Running: 55. Fielding: 60. Arm: 55.

    TRACK RECORD: After signing for just $70,000 in 2016, Perdomo quickly looked like a bargain with his elite plate discipline and ability to play shortstop. After an impressive U.S. debut in 2018, Perdomo advanced to high Class A in 2019 and took a star turn as a 19-year-old in the Arizona Fall League. The D-backs brought him to their alternate training site in 2020.

    SCOUTING REPORT: Perdomo primarily stands out on defense but has plenty of offensive tools as well. The switch-hitter controls the strike zone, has good bat speed from both sides of the plate and has posted solid results against both lefties and righties. Mostly a singles and doubles hitter, Perdomo said he added 17 pounds of muscle to his athletic frame after the 2019 season and could still add more. Perdomo is a graceful defender who would be a slightly above-average major league shortstop right now and could be a plus defender in the future. He has soft, reliable hands and an above-average arm, while his above-average speed gives him plenty of range. Nearly fluent in English, Perdomo is viewed as a team leader.

    THE FUTURE: Perdomo is set to open 2021 at Double-A. The D-backs have Nick Ahmed signed through 2023, so Perdomo has time to develop his offensive game.

  4. 4. Kristian Robinson | OF
    Kristian Robinson
    Born: Dec 11, 2000
    Bats: R Throws: R
    Ht.: 6'3" Wt.: 215
    Drafted/Signed: Bahamas, 2017.
    Signed By: Cesar Geronimo/Craig Shipley.

    Hitting: 45. Power: 70. Running: 60. Fielding: 55. Arm: 50.

    TRACK RECORD: Robinson signed for $2.5 million in 2017 and quickly impressed the organization with his maturity, mindset and athleticism. He put together a strong season in the short-season Northwest League before a promotion to the low Class A Midwest League at age 18 in 2019, and he showed up to spring training in 2020 with a slimmed-down physique after experimenting with a paleo diet in the offseason. Robinson joined the alternate training site in August and finished the year in instructional league.

    SCOUTING REPORT: Robinson’s natural athleticism, gargantuan raw power and plus speed give him the building blocks for massive upside. He does things few players can, including hitting a home run into the Chase Field pool area in three consecutive at-bats during alternate site play. But while his power and speed are undeniable, concerns about how often he swings and misses are starting to raise questions about his ability to reach his ceiling. He projects as a fringe-average hitter who strikes out often, though he’s still young and has relatively little experience against quality pitching coming from the Bahamas. He is a potential above-average defender in an outfield corner.

    THE FUTURE: Robinson was hurt by a lack of reps in 2020. He’ll look to make up for lost time in 2021.

  5. 5. Alek Thomas | OF
    Alek Thomas
    Born: Apr 28, 2000
    Bats: L Throws: L
    Ht.: 5'11" Wt.: 175
    Drafted/Signed: HS--Chicago, 2018 (2nd round).
    Signed By: Nate Birtwell.

    Hitting: 60. Power: 45. Running: 60. Fielding: 60. Arm: 45.

    TRACK RECORD: Thomas’ father Allen is a former minor league outfielder who has spent the past 17 years as the strength and conditioning coach for the White Sox. The younger Thomas was drafted by the D-backs in the second round in 2018 and hit his way up to high Class A in his first full season. He spent the 2020 season at the alternate training site and held his own against upper-level pitchers.

    SCOUTING REPORT: Thomas packs a punch despite his undersized, 5-foot-11 frame. He has a lot going on in his swing with busy hands, a pronounced leg kick and an aggressive weight transfer, but he manages to get on time. Thomas can generate loud contact that yields extra bases, and he uses his plus speed to take the extra 90 feet. He has a chance to grow into double-digit home run power, but most of his impact will be felt in the form of doubles and triples. He has an aggressive approach but has taken steps to become more selective. In an organization filled with talented defensive outfielders, Thomas is regarded as the best of the group and a potential plus defender in center field, though his arm is a tick below-average.

    THE FUTURE: Thomas is expected to push his way to Double-A to start 2021. His game calls to mind Adam Eaton, Brett Gardner and other smaller, impactful outfielders.

  6. 6. Slade Cecconi | RHP
    Slade Cecconi
    Born: Jun 24, 1999
    Bats: R Throws: R
    Ht.: 6'4" Wt.: 224
    Drafted/Signed: Miami, 2020 (1st round supplemental).
    Signed By: Eric Cruz.

    Fastball: 60. Slider: 60. Changeup: 45. Curveball: 55. Control: 55.

    TRACK RECORD: Cecconi was an intriguing draft prospect as a high school senior, but an injury kept him off the field and steered him to Miami. He posted solid results with the Hurricanes and his stuff, presence and strike-throwing ability enticed the D-backs to draft him 33rd overall as an eligible sophomore. Cecconi quickly validated the selection with dominant showings at the alternate training site and instructional league, drawing reviews as the organization’s best pitching prospect.

    SCOUTING REPORT: Working with a prototypical 6-foot-4 pitcher’s frame, Cecconi has a methodical, under-control delivery from which he unleashes monster stuff. His fastball sits at 95 mph and touches 98 with impressive life. He backs up his heater with a wipeout slider that is another plus pitch. His curveball is a bit loopy but still gives hitters trouble, serving as a good change of speed. His changeup is a fringy offering that is a clear fourth pitch. Cecconi throws strikes and earns praise for his command, but he does have a history of leaving the ball over the plate too much or falling off as his starts wear on.

    THE FUTURE: Cecconi looked like a polished starter over the summer in 2020 but still has to show he can pitch deep into games and maintain his best stuff over a long season.

  7. 7. Bryce Jarvis | RHP
    Bryce Jarvis
    Born: Dec 26, 1997
    Bats: L Throws: R
    Ht.: 6'2" Wt.: 195
    Drafted/Signed: Duke, 2020 (1st round).
    Signed By: George Swain.

    Fastball: 55. Slider: 55. Changeup: 55. Curveball: 45. Control: 55.

    TRACK RECORD: Jarvis, the son of longtime major league pitcher Kevin Jarvis, had long been a well-regarded prospect, but his stock jumped in 2020 after he worked at Driveline and Cressey Sports Performance to add velocity and sharpen his secondary pitches. He threw a 15-strikeout perfect game against Cornell in February and became the highest-drafted player in Duke history when the D-backs took him 18th overall.

    SCOUTING REPORT: The D-backs viewed Jarvis as a polished and potentially fast-moving college pitcher after he sat 93-96 mph with plus command of his fastball and a changeup and slider that were both above-average in the spring. He struggled at the alternate training site and instructional league, however, showing subpar fastball command and little deception while serving up a lot of home runs. Jarvis’ strong four starts in the abbreviated 2020 college season were better than the rest of his career, so there were already some questions whether it was sustainable. On the positive side, Jarvis earned high marks for his competitiveness and cerebral approach. His changeup also showed plus at its best and he began showcasing a newly-developed curveball..

    THE FUTURE: The early indications suggest Jarvis might not be quite as close to the majors as originally believed. He’ll try to rediscover his best form with a full season in 2021.

  8. 8. Blake Walston | LHP
    Blake Walston
    Born: Jun 28, 2001
    Bats: L Throws: L
    Ht.: 6'5" Wt.: 195
    Drafted/Signed: HS--Wilmington, N.C., 2019 (1st round).
    Signed By: George Swain.

    Fastball: 55. Slider: 60. Changeup: 45. Curveball: 50. Control: 50.

    TRACK RECORD: The D-backs grabbed the projectable, athletic Walston with the second of their two first-round picks in 2019, and they were pleased with the initial returns. Walston added significant weight and strength and spent the 2020 season at the alternate training site, where he performed relatively well.

    SCOUTING REPORT: Walston has a lot of promise, but is still a young pitcher learning to maintain his best stuff. His fastball velocity can reach the mid 90s but is inconsistent, and he’s still making mechanical adjustments to get better separation between his average curveball and plus slider. His changeup remains a work in progress. Walston’s intensity level fluctuated at the alternate site, leading to speculation that the lack of true competition—of games that counted—was a detriment to his focus. Others wondered if he needed adversity to get the most of his ability. Walston also saw his command and velocity suffer when he got into the middle innings of games. He earned praise for his work and preparation off the field.

    THE FUTURE: Walston missed out on the development that comes from grinding out a full season. He should get the chance to do that in 2021 and will aim to show his best stuff on a more consistent basis.

  9. 9. Pavin Smith | 1B/OF
    Pavin Smith
    Born: Feb 6, 1995
    Bats: L Throws: L
    Ht.: 6'2" Wt.: 210
    Drafted/Signed: Virginia, 2017 (1st round).
    Signed By: Rick Matsko.

    Hitting: 55. Power: 45. Running: 45. Fielding: 55. Arm: 55.

    TRACK RECORD: Smith was regarded as one of the best pure hitters in the 2017 draft and was selected seventh overall by the D-backs. He struggled at the start of his professional career, but turned things around midway through the 2019 season at Double-A Jackson. He pushed his way to the majors late in 2020, showing flashes of the kind of big leaguer he could become.

    SCOUTING REPORT: In many ways, Smith is the same player he was coming out of college. He has excellent strike-zone awareness, good bat-to-ball skills and sneaky solid athleticism. The D-backs believe he also has made strides in other areas. He made adjustments to allow him to better stay back and hit the bottom of the ball at the alternate training site, translating to more power. He also has “transformed himself physically,” in the words of D-backs general manager Mike Hazen, adding speed and quickness. The club now feels comfortable with him in left and right field in addition to first base, where he is above-average. Smith has an above-average arm and is a fringe-average runner.

    THE FUTURE: Smith turned in competitive at-bats during his September cameo. His ability to play the outfield increases his likelihood of impacting the 2021 roster.

  10. 10. Corbin Martin | RHP
    Corbin Martin
    Born: Dec 28, 1995
    Bats: R Throws: R
    Ht.: 6'2" Wt.: 225
    Drafted/Signed: Texas A&M, 2017 (2nd round).
    Signed By: Noel Gonzales-Luna (Astros).

    Fastball: 55. Slider: 50. Changeup: 50. Curveball: 55. Control: 55.

    TRACK RECORD: Martin jumped on the fast track after being drafted by the Astros in the second round in 2017 and reached the majors in 2019. That rise was interrupted by Tommy John surgery in July 2019—less than a month before the D-backs acquired him in the Zack Greinke deal. Just as Martin was approaching a return in 2020, he suffered a strained left oblique that effectively ended his season.

    SCOUTING REPORT: Martin returned to the mound in the fall, appearing in intrasquad games and instructional league, and looked mostly like his normal self. His velocity was a tick down, ranging from 92-95 mph, but he also was not throwing at full intensity. Before surgery, Martin had a solid four-pitch mix, with his fastball complemented by a slider, curveball and changeup that all graded average to above. He’s since tinkered with a new grip on his curveball and received good feedback on it, helping solidify it as a potentially above-average pitch. He’s previously shown above-average control when healthy.

    THE FUTURE: Martin will enter spring training as one of the club’s depth starter options. He’s previously shown No. 3 or 4 starter potential but has to stay healthy and show his stuff comes all the way back.

  11. 11. Conor Grammes | RHP
    Conor Grammes
    Born: Jul 13, 1997
    Bats: R Throws: R
    Ht.: 6'2" Wt.: 205
    Drafted/Signed: Xavier, 2019 (5th round).
    Signed By: Jeremy Kehrt.

    TRACK RECORD: Grammes was a two-way player who spent more time as a position player than a pitcher at Xavier. Intrigued by his quick arm and athleticism, the D-backs drafted Grammes as a pitcher in the fifth round in 2019 despite his limited experience on the mound. The early returns, albeit not in a normal minor league setting, were encouraging in 2020.

    SCOUTING REPORT: Grammes has some of the best pure stuff in the D-backs' organization. His fastball routinely sat 97-100 mph during instructional league and he backed it up with a hard, 87-88 mph slider and mid-80s power curveball that both drew above-average grades. Grammes also has a firm, upper-80s changeup, but it lags behind his two breaking balls. Grammes walked more than six batters per nine innings in college. His control has made strides, but his command remains a work in progress. With the cancellation of the 2020 minor league season, he has not had the opportunity to show he can go deep into games or maintain his stuff over a full season.

    THE FUTURE: Grammes is most likely a future hard-throwing reliever. Given how much he has improved since being drafted and his relative lack of pitching experience, starting isn't out of the question if he keeps making strides.

  12. 12. Levi Kelly | RHP
    Levi Kelly
    Born: May 14, 1999
    Bats: R Throws: R
    Ht.: 6'4" Wt.: 205
    Drafted/Signed: HS--Bradenton, Fla., 2018 (8th round).
    Signed By: Luke Wrenn.

    TRACK RECORD: The D-backs took a flier on the projectable Kelly in the eighth round in 2018. He rewarded them with a dominant season in the low Class A Midwest League in his first full season and continued to impress in 2020. Kelly opened eyes at summer camp and continued to pitch well at the alternate training site before tiring at the end of the year.

    SCOUTING REPORT: Kelly's fastball sits 94-96 mph and touches 98, but his best weapon is a wipeout slider that was nearly unhittable for much of the summer at the alternate site. He also throws a splitter that serves as a change of pace offering and added a curveball, giving him the potential for a well-rounded starter's arsenal. Kelly's fastball command comes and goes, and some observers would like to see him dial back the intensity in his high-effort delivery, which leads to fringy control. He is highly competitive and has a great work ethic.

    THE FUTURE: Kelly needs to tighten up his command and third pitch to remain in the rotation. The D-backs know if starting doesn't work out, he would fit nicely in the back of a bullpen.

  13. 13. AJ Vukovich | 3B
    AJ Vukovich
    Born: Jul 20, 2001
    Bats: R Throws: R
    Ht.: 6'5" Wt.: 210
    Drafted/Signed: HS--East Troy, Wis., 2020 (4th round).
    Signed By: Nate Birtwell.

    TRACK RECORD: Vukovich was a two-sport star in high school who was a finalist for Wisconsin's Mr. Basketball. The D-backs drafted him in the fourth round in 2020 and signed him for $1.25 million, the equivalent of second-round money, to forgo a Louisville commitment. Vukovich made a loud first impression at instructional league in the fall, impressing the organization with consistent hard contact and a mature routine and work ethic.

    SCOUTING REPORT: Vukovich is lean and lanky and has more athleticism than might be apparent at first glance. Despite his big frame and long levers, his swing is relatively short and direct with few moving parts. With his stance slightly closed, he wears out the right-center field gap. He shows a good approach, a feel for finding the barrel and plus power potential. Defense hasn't been a focus for Vuckovich, but he made strides in his fundamentals at third base during the fall. He still has a long way to go and might end up shifting to an outfield corner. He is a below-average runner.

    THE FUTURE: Vukovich should hit enough for an outfield corner. Some observers believe he could develop into a Nick Castellanos type.

  14. 14. Seth Beer | 1B/DH
    Seth Beer
    Born: Sep 18, 1996
    Bats: L Throws: R
    Ht.: 6'3" Wt.: 225
    Drafted/Signed: Clemson, 2018 (1st round).
    Signed By: Gavin Dickey (Astros).

    TRACK RECORD: Beer put up gaudy numbers at Clemson to become the first freshman to win the Dick Howser Trophy in 2016. The Astros drafted him 28th overall in 2018 and sent him to the D-backs in the Zack Greinke trade a year later. After hitting .289/.389/.516 and reaching Double-A in his first full season, Beer spent 2020 at the D-backs' alternate site and was arguably their best hitter there.

    SCOUTING REPORT: Beer isn't just a bat-first player --he appears to be bat only. He has a mature approach, a smooth, strong swing and above-average raw power. He's hit for average and power at every level and projects to continue to do so. Despite the work he has put in to improve defensively, he hasn't made much progress. His footwork at first base is not good, nor are his hands. He is worse in the outfield based on near bottom-of-the-scale speed. Even if he could be a poor-yet-passable defender, it likely would not be good enough for the D-backs, who put a premium on defense.

    THE FUTURE: If the universal DH is here to stay, that gives Beer a possible path with the D-backs. Even then, they value flexibility, which Beer does not provide. He can hit, but his future likely lies in a different organization.

  15. 15. Tommy Henry | LHP
    Tommy Henry
    Born: Jul 29, 1997
    Bats: L Throws: L
    Ht.: 6'3" Wt.: 205
    Drafted/Signed: Michigan, 2019 (2nd round supplemental).
    Signed By: Jeremy Kehrt.

    TRACK RECORD: Henry had a dominant run in the College World Series in 2019, shortly after the D-backs made him the highest-drafted Michigan pitcher in 25 years. The club liked his pitch mix and his athleticism, hoping it would translate into further development. Though the 2020 minor league season was cut short by the pandemic, Henry's early returns were encouraging at the alternate training site.

    SCOUTING REPORT: Henry's fluctuations in velocity were a concern leading up to the draft, but his fastball ticked up and stayed there during his time at the alternate site, sitting at 93 mph and topping out at 95. He credited the uptick to a better incorporation of his lower half along with long-tossing and work with weighted balls. Henry's above-average slider is generally viewed as his primary secondary offering, but his average changeup made strides to the point that Henry has called it his favorite pitch. He also picked up a curveball this year that has promise. Henry's best asset is his plus control.

    THE FUTURE: Henry's ceiling would be higher if he could find a dominant, go-to secondary pitch. Until then, he projects as a back-end starter.

  16. 16. Ryne Nelson | RHP
    Ryne Nelson
    Born: Feb 1, 1998
    Bats: R Throws: R
    Ht.: 6'4" Wt.: 190
    Drafted/Signed: Oregon, 2019 (2nd round).
    Signed By: Dan Ramsay.

    TRACK RECORD: Nelson shifted his focus to pitching at Oregon in 2019 after spending his first two years as a two-way player. He struggled with command and control and was dropped from the Ducks' rotation to the bullpen, but his power stuff convinced the D-backs to draft him in the second round. He showed up at instructional league in 2020 looking like a different pitcher, giving the D-backs hope he could develop into a starter.

    SCOUTING REPORT: Nelson has a lighting-fast arm that generates fastballs that sit 94-95 mph, touch 98 and have excellent life through the zone. He has two additional weapons in his curveball and slider. His curveball is the better pitch when he throws it hard in the 83 mph range, while his slider generates good sweep despite Nelson's high arm slot. He made big strides with his changeup, but it remains his fourthbest offering. Nelson's control has always been the question mark. The progress he made to average was a bright spot in 2020 for the D-backs, who no longer have to squint to see a future starter.

    THE FUTURE: Nelson will need to continue progressing to stick in the rotation. High Class A is likely his next test.

  17. 17. Luis Frias | RHP
    Luis Frias
    Born: May 23, 1998
    Bats: R Throws: R
    Ht.: 6'3" Wt.: 235
    Drafted/Signed: Dominican Republic, 2015.
    Signed By: Jose Ortiz/Junior Noboa.

    TRACK RECORD: Frias is a big-bodied power pitcher the D-backs signed for $50,000 in 2015. He reached the low Class A Midwest League in 2019 and spent 2020 at the alternate training site, where he was occasionally hit hard by more advanced hitters.

    SCOUTING REPORT: Frias has the building blocks to be a starting pitcher. His fastball sits in the mid-toupper 90s and his spike curveball serves as his out pitch. He added a splitter in 2019 and began throwing a slider in 2020, something he hopes to use as a called-strike pitch. As with other power arms in the system, his command remains a work in progress. There was some sense among the organization that his occasional struggles at the alternate site, much of which stemmed from pitches that caught too much of the plate, could help drive home the importance of improved command.

    THE FUTURE: Frias' profile remains relatively unchanged from previous years. If he can make strides with the consistency of his command and his secondary stuff, he could become an innings-eating mid-rotation starter. Otherwise, he fits best in relief.

  18. 18. Drey Jameson | RHP
    Drey Jameson
    Born: Aug 17, 1997
    Bats: R Throws: R
    Ht.: 6'0" Wt.: 165
    Drafted/Signed: Ball State, 2019 (1st round supplemental).
    Signed By: Jeremy Kehrt.

    TRACK RECORD: Jameson is undersized and the product of humble roots. He was raised by a single mom who worked two jobs, an upbringing that helped shape his competitive nature. He was initially a two-way player at Ball State but ultimately developed into the program's ace and best pitching prospect since Bryan Bullington was the No. 1 overall pick in the 2002 draft. The D-backs took Jameson with the 34th overall pick in 2019 and signed him for $1.4 million.

    SCOUTING REPORT: Despite his small frame, Jameson generates some of the best velocity in the organization. He pumps fastballs that sit in the mid 90s as a starter and 98-100 mph in relief with his super-quick arm speed. But Jameson does so with significant effort, taking away his ability to command it. His fastball also gets hit more than would be expected, raising questions about a potential lack of deception. Jameson has a full repertoire, including a slider, curveball and changeup that all have average potential, though his breaking pitches are inconsistent and sometimes blend together.

    THE FUTURE: Jameson may need to tone down his delivery in order to gain consistency with his location and the shape of his secondary stuff. In the eyes of many, he is looking more and more like a future late-inning reliever.

  19. 19. Jake McCarthy | OF
    Jake McCarthy
    Born: Jul 30, 1997
    Bats: L Throws: L
    Ht.: 6'3" Wt.: 215
    Drafted/Signed: Virginia, 2018 (1st round supplemental).
    Signed By: Rick Matsko.

    TRACK RECORD: McCarthy received a $1.65 million bonus as the 39th overall pick in 2018, following his older brother Joe on a path from Virginia to the professional ranks. He immediately went about working to rebuild his swing, an effort that was sidetracked by injuries that limited him to just 53 games with high Class A Visalia in 2019.

    SCOUTING REPORT: McCarthy showed up to instructional league in 2020 looking completely different. He put on some 20 pounds of good weight, and just as noticeable were the changes to his swing. Once rigid and upper-body driven, it is now more athletic while incorporating a leg kick. McCarthy was perhaps the D-backs' most productive hitter during the fall, a performance that teased flashes of an aboveaverage hitter with 20-plus home run power and re-established his prospect value. McCarthy remains an excellent defender whose speed plays well in center field. He saw time at first base during instructs, a move designed to increase his versatility.

    THE FUTURE: McCarthy's transformation brings to mind the swing changes made by former D-backs outfielder Mitch Haniger. He'll now try to show he can carry that success into 2021 and sustain it.

  20. 20. Wilderd Patino | OF
    Wilderd Patino
    Born: Jul 18, 2001
    Bats: R Throws: R
    Ht.: 6'1" Wt.: 175
    Drafted/Signed: Venezuela, 2017.
    Signed By: Cesar Geronimo/Kristians Pereira.

    TRACK RECORD: Patiño needed surgery on the growth plate in his right elbow in the spring of 2017, prompting the Rangers to back out of a $1.3 million agreement. The D-backs swooped in and signed him for $985,000, then had Patiño undergo revision surgery. He returned the following summer and broke out in 2019, when he hit .349/.403/.472 in the Rookie-level Arizona League and earned a late promotion.

    SCOUTING REPORT: Patiño has the raw materials to be an impact major leaguer. His strong, physical frame can produce above-average power to all fields and he has plus speed and athleticism in the outfield. His game remains raw, however. He has made adjustments at the plate, including the way he grips the bat, but could stand to make more. He primarily needs to tone down his aggressiveness, which works against him and will get further exploited against advanced pitchers. Patiño is not as sharp a defender as others in the system and may be forced to a corner. His fringe-average arm may limit him to left field.

    THE FUTURE: Patiño was among those most hurt by the lack of a minor league season, given how much development is still needed. He should open 2021 at low Class A.

  21. 21. Manuel Pena | SS
    Manuel Pena
    Born: Dec 5, 2003
    Bats: L Throws: R
    Ht.: 6'2" Wt.: 175
    Drafted/Signed: Dominican Republic, 2021.

    TRACK RECORD: Peña built a reputation as one of the top pure hitters from the Dominican Republic in his international class when he signed with the D-backs during the 2020-21 signing period.

    SCOUTING REPORT: Peña takes a compact swing with a good bat path from the left side and an advanced offensive approach. That has helped him hit well in games with the ability to barrel balls consistently. Peña makes hard contact for his age, has a swing geared to hit the ball in the air and the physical projection to develop 20-25 home run power in the future, possibly more given his knack for putting the sweet spot on the ball. Peña is an offensive-oriented player who many scouts thought would go to third or second base. Long term, that is probably still the case, but he has improved defensively in terms of his ability to read hops and use better technique to field the ball with good balance and body control, giving him a chance to keep developing as a shortstop. A slightly below-average runner, Peña has soft hands but needs to improve his footwork. He's a slightly below-average runner whose range probably leads him off the position as he gets bigger, with a 50-55 arm that could be plus in the future.

    THE FUTURE: Peña is one of the more advanced hitters the D-backs have signed out of the Dominican Republic in recent years. He’s still several years away, but his hitting ability should translate quickly.

  22. 22. Blaze Alexander | SS/2B
    Blaze Alexander
    Born: Jun 11, 1999
    Bats: R Throws: R
    Ht.: 6'0" Wt.: 175
    Drafted/Signed: HS--Bradenton, Fla., 2018 (11th round).
    Signed By: Luke Wrenn.

    TRACK RECORD: The younger brother of Braves minor league C.J. Alexander, Blaze signed with the D-backs for an over-slot $500,000 bonus as an 11th-rounder in 2018. He had a loud debut followed by a so-so first full professional season at low Class A Kane County. His only 2020 action came during instructional league, which was cut short by a rib injury.

    SCOUTING REPORT: Alexander has the athletic frame and actions of a big leaguer. His calling card has always been his rifle arm, which has long graded near the top of the 20-to-80 scouting scale. Alexander began to show burgeoning power production during spring training but tends to be overly streaky and needs to better maintain his approach and swing from at-bat to at-bat. Optimistic projections peg him as a potential fringe-average hitter with average power, but he'll need time to get there. Alexander can play shortstop but might fit best as a multi-positional infielder.

    THE FUTURE: Alexander will be looking to pick up lost developmental at-bats in 2021. Many see him as a future super-utility type like the Athletics' Chad Pinder.

  23. 23. Dominic Fletcher | OF
    Dominic Fletcher
    Born: Sep 2, 1997
    Bats: L Throws: L
    Ht.: 5'9" Wt.: 185
    Drafted/Signed: Arkansas, 2019 (2nd round supplemental).
    Signed By: Nate Birtwell.

    TRACK RECORD: The younger brother of Angels infielder David Fletcher, Dominic became the highestdrafted player from Arkansas in four years when the D-backs took him 75th overall pick in 2019. He performed well in the low Class A Midwest League out of the draft and earned good reviews for his play at the alternate training site in 2020.

    SCOUTING REPORT: Like his older brother, Fletcher is a fundamentally sound player. He is at his best when he uses his line-drive swing to spray balls to all fields. He can occasionally get pull-happy. Fletcher has solid raw power, which he occasionally taps into during games. He has fringe-average speed but is nevertheless a good defender in center field on account of his good jumps and routes. D-backs people rave about his style of play and believe his ceiling might be higher than some believe, just as happened with his brother.

    THE FUTURE: Fletcher doesn't get the attention of other outfielders in the system, but it wouldn't be a shock if he outperforms many others with bigger raw tools. He draws optimistic comparisons with Kole Calhoun, with many others seeing at least a reserve outfielder in the major leagues.

  24. 24. Tristin English | 3B
    Tristin English
    Born: May 14, 1997
    Bats: R Throws: R
    Ht.: 6'3" Wt.: 210
    Drafted/Signed: Georgia Tech, 2019 (3rd round).
    Signed By: Hudson Belinsky.

    TRACK RECORD: English was a two-way player at Georgia Tech and had Tommy John surgery following his freshman year. A strong showing in the Cape Cod League in his return followed by a successful redshirt sophomore season raised English's stock as a position player, prompting the D-backs to select him in the third round in 2019. He put together a solid debut and was impressive during spring training in 2020 before the coronavirus pandemic shut camps down.

    SCOUTING REPORT: English has a relatively compact swing geared toward center and right field that generates plus raw power. It can appear a bit stiff at times, but he has a natural feel for finding the barrel. He remains an aggressive hitter who is continuing to work on refining the zone. English's hands work well at third base and he has a monster arm. He is tall with a thick, strong build, but there are concerns his added strength was a detriment to his athleticism.

    THE FUTURE: English's bat has won over believers so far. He still has to show he can produce against more advanced pitchers and will try to do so in 2021.

  25. 25. Humberto Mejia | RHP
    Humberto Mejia
    Born: Mar 3, 1997
    Bats: R Throws: R
    Ht.: 6'3" Wt.: 235
    Drafted/Signed: Panama, 2013.
    Signed By: Luis Cordoba/Albert Gonzalez (Marlins).

    TRACK RECORD: Signed by the Marlins for $50,000 in 2013, Mejia moved slowly through their system in part due to shoulder issues. He stayed healthy in 2019, pitched well enough at the Class A levels to earn a spot on the 40-man roster and found himself in the majors in 2020 after the Marlins' Covid-19 outbreak decimated their pitching staff. The D-backs acquired him at the trade deadline as one of three players for Starling Marte.

    SCOUTING REPORT: Mejia has a frame that looks capable of handling a starter's workload and a slightly crossfire delivery that creates deception. At his best, he can pair his low-to-mid-90s fastball with two above-average breaking balls and a changeup, all thrown with solid command. But Mejia's stuff looked pedestrian after the trade, with his curveball and slider blending together and neither looking like putaway pitches. The D-backs are intrigued by his distinct pitch shapes and above-average command history and hope he can succeed using his repertoire to attack a game plan.

    THE FUTURE: Despite Mejia's time in the majors, the D-backs don't see him as major league ready. He'll open 2021 in the upper minors and has the potential to emerge as a back-end starter.

  26. 26. J.B. Bukauskas | RHP
    J.B. Bukauskas
    Born: Oct 11, 1996
    Bats: R Throws: R
    Ht.: 6'0" Wt.: 210
    Drafted/Signed: North Carolina, 2017 (1st round).
    Signed By: Tim Bittner (Astros).

    TRACK RECORD: Bukauskas was an All-American and a Golden Spikes Award finalist at North Carolina, but he has struggled to either stay healthy or put everything together since being selected 15th overall by the Astros in 2017. The D-backs acquired him as part of the Zack Greinke deal in July 2019 and brought him to the alternate training site in 2020.

    SCOUTING REPORT: When it clicks, Bukauskas can be overpowering. His mid-to-upper-90s fastball is explosive, his slider is a wipeout pitch that has late, sharp action and his power 89-91 mph changeup might be the best in the system. But Bukauskas has continued to struggle with both his below-average control and his command, looking at times as if he were trying to make perfect pitches rather than attacking the zone. He also falls in love with his slider and doesn't throw his changeup enough. After battling injuries in previous years, he managed to stay mostly healthy in 2020.

    THE FUTURE: Arrows are pointing more and more toward a future relief role for Bukauskas. His high-octane stuff gives him a late-inning ceiling if he can figure out his control.

  27. 27. Jose Fernandez | SS
    Jose Fernandez
    Born: Sep 22, 2003
    Bats: R Throws: R
    Ht.: 6'3" Wt.: 165
    Drafted/Signed: Venezuela, 2021.

    TRACK RECORD: Dominican shortstop Manuel Peña and Venezuelan shortstop Jefferson Peña were more prominent prospects among the D-backs 2020-21 international signings. Fernandez, though, has trended up significantly and could end up one of the best values of his international class.

    SCOUTING REPORT: Fernandez has a lean, ultra-projectable frame at 6-foot-3, 165 pounds, with an exciting mix of skills on both sides of the ball, tools and the strength projection left for those tools to continue trending up. He has hit well in games with a good swing and a high contact rate. It's gap power now but he hits the ball hard with backspin to all fields and the strength projection to grow into above-average power once he packs on size. Fernandez is athletic with slightly above-average speed and is a fluid mover at shortstop. He has good actions and fields the ball with sweet hands and an arm that's flashing plus and could get even stronger with physical maturity. If he outgrows the position, he could go to third base, but he has the ability to stick at shortstop as long as he maintains his agility and athleticism.

    THE FUTURE: Fernandez still has a lot to prove, but he’s an arrow-up player with breakout potential.

  28. 28. Jeferson Espinal | OF
    Jeferson Espinal
    Born: Jun 7, 2002
    Bats: L Throws: L
    Ht.: 6'0" Wt.: 185
    Drafted/Signed: Dominican Republic, 2018.
    Signed By: Cesar Geronimo/Omar Rogers.

    TRACK RECORD: Intrigued by his athleticism and speed, the D-backs signed Espinal for $200,000 as part of their 2018 international class. In two years, he has added strength and begun to show power potential more quickly than the organization had envisioned.

    SCOUTING REPORT: Espinal has near top-of-the-scale speed, good bat-to-ball ability and the makings of a good approach. He routinely hit balls hard at instructional league, often going the other way or staying up the middle. He has put on about 20 pounds since signing, drawing comparisons to fellow prospect Wilderd Patino's powerful frame. He has a chance to stick in center field, though his reads and routes could use work. He draws praise for his makeup and work ethic. The one knock on his game is his belowaverage arm strength.

    THE FUTURE: Espinal has a long way to go, but his early performance gives the D-backs another outfielder to dream on. He has a chance to open the 2021 season at low Class A.

  29. 29. Liam Norris | LHP
    Liam Norris
    Born: Aug 13, 2001
    Bats: L Throws: L
    Ht.: 6'4" Wt.: 215
    Drafted/Signed: HS--Cary, N.C., 2020 (3rd round).
    Signed By: George Swain.

    TRACK RECORD: Well-known on the showcase circuit for years, Norris entered his senior season at Green Hope High in Cary, N.C., having shown poor command and control in the recent past. He looked much improved in the spring before the coronavirus pandemic shut everything down, and the D-backs got multiple early looks at him to feel confident the progression was not a mirage. They selected him in the third round and gave him an above-slot $800,000 bonus to forgo a North Carolina commitment.

    SCOUTING REPORT: Norris has a big body he is still growing into and a clean arm action. He impressed during instructional league with both his strike-throwing and ability to repeat his delivery, though he wasn't as consistent as he needs to be. His fastball ranged from 92-96 mph, and some believe he still has the physical projection to get stronger and add more velocity. His 79-82 mph curveball has good break and depth and is a potentially average pitch, slightly ahead of his fringy slider and changeup.

    THE FUTURE: Norris will need to stay on top of his conditioning and show he can maintain his stuff and command over a full season. If he can, he has the weapons to stick in the rotation.

  30. 30. Justin Martinez | RHP
    Justin Martinez
    Born: Jul 30, 2001
    Bats: R Throws: R
    Ht.: 6'3" Wt.: 195
    Drafted/Signed: Dominican Republic, 2018.
    Signed By: Cesar Geronimo/Jose Ortiz.

    TRACK RECORD: When the D-backs signed Martinez for $50,000 in 2018, he had been pitching for just six months, had below-average control and lacked the feel to spin a breaking ball. He improved rapidly and now, nearly three years later, has begun to win over believers when it comes to his potential to be a major league starter.

    SCOUTING REPORT: Martinez has plenty of size, strength and athleticism. His fastball sits in the mid 90s, scratches 99 mph and is unique in that it sometimes cuts and sinks. He has picked up a slider that can be sharp and sweepy but remains inconsistent. He also throws a splitter that provides good separation, but he needs to throw more strikes with it. His mechanics are raw and he tends to rush down the mound, but there's not much effort in his arm action and delivery.

    THE FUTURE: The strides Martinez has made given his short time on the mound lends credence to those who think he can continue trending upward. He has a ways to go, but his upside is tantalizing.

View Players 11-30

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