Geraldo Perdomo -- Prospect Evaluation

Geraldo Perdomo, signed as a 16-year-old international free agent in 2016 for $70,000, transformed from an underwhelming DSL prospect into a top organizational prospect during the 2018 season. The 19-year-old switch-hitting shortstop produced a .322/.438/.460 line across 57 games between rookie and short-season assignments, with particular success in the Northwest League (149 wRC+) despite facing older competition. Perdomo accumulated 24 steals at an 80% success rate while maintaining strong shortstop defense, demonstrating the foundational skills that propelled him up prospect rankings.

Defensively and on the basepaths, Perdomo is considered advanced for his age. He is a line-drive hitter with gap power expected to produce approximately 40 doubles, 10 triples, and 10 home runs annually as he adds muscle to his 6'2", 185-pound frame. While he lacks exceptional straight-line speed or an elite throwing arm, his overall shortstop play is solid. The evaluation notes similarities to Ketel Marte, a current Diamondback middle infielder, though Perdomo is considered more polished at an equivalent prospect age.

The primary developmental concern centers on whether offensive production will continue improving, as his current profile relies heavily on gap hits and stolen bases following walks or singles. Most evaluators do not share typical concerns about a 19-year-old's readiness for full-season ball given Perdomo's advanced instincts and performance across multiple levels. The organization projects him as an above-average regular at an infield position, likely second base, offering depth at the position while providing insurance should Jazz Chisholm's development stall due to swing-and-miss issues.

Geraldo Perdomo has been named the Arizona Diamondbacks' top defensive prospect by MLB Pipeline. The shortstop signed as an international prospect for only $70,000 in 2016 and has developed into an attractive long-term prospect. In his recent season, Perdomo recorded 70 walks against 67 strikeouts across two levels of A-ball while standing 6'3" and weighing 184 pounds. Despite limited offensive production on the stat sheet, he is already generating MLB-average exit velocities, suggesting significant power potential as he continues to mature physically.

Perdomo's primary value currently lies in his defensive profile. He is described as a natural athlete with the hands, throwing arm, and internal clock necessary to remain at shortstop. The Diamondbacks' confidence in Perdomo's potential prompted their willingness to trade Jazz Chisholm for Zac Gallen, indicating they view him as their future shortstop. Analysts compare him to Ketel Marte, another switch-hitter who developed into an effective major leaguer despite early offensive struggles. Following a strong showing in the Fall League, the organization is expected to promote Perdomo aggressively to Double-A rather than repeating High-A, potentially accelerating his arrival to the majors from late 2021 to Opening Day or shortly thereafter.

Geraldo Perdomo is a switch-hitting shortstop prospect in the Arizona Diamondbacks organization who debuted in MLB on April 3, 2021. The 24-year-old Dominican Republic native stands 6'2" and weighs 203 lbs. Perdomo was highly regarded as a prospect, ranking as the #2 prospect in the Diamondbacks organization in 2020 and #72 overall according to Baseball America that same year. His prospect ranking has declined gradually, falling to #4 in the organization by 2022 and #89 in Baseball America's rankings. He has been recognized for strong defensive abilities, earning Best Defensive Infielder honors in the Diamondbacks organization in both 2019 and 2020, alongside recognition for his strike-zone discipline in 2020. Current performance metrics show limited offensive impact, with statistics across 62 at-bats including a .194 batting average, .307 on-base percentage, .274 slugging percentage, and just 1 home run. Career transactions show extensive minor league development through Arizona's system with assignments to Reno Aces, Amarillo Sod Poodles, and Jackson Generals, with a recent injury setback placing him on the injured list in April 2024 due to a right meniscus tear.

Geraldo Perdomo is a 19-year-old switch-hitting shortstop in the Arizona Diamondbacks organization. Per evaluator Forest Stulting's October 2019 report following six months of observation with Kane County Cougars (Low-A), Perdomo projects to reach MLB by 2022 with an overall future potential of 50 grade, though carries high risk.

Perdomo's primary strengths are his defensive tools. He grades 60 for both glove and arm work, displaying natural instincts, plus internal clock, soft hands, and fluid footwork. He shows the versatility to make any throw required at shortstop and can throw from multiple arm angles with accuracy.

Offensively, Perdomo's hit tool grades 50, primarily due to exceptional zone control, though his swing occasionally becomes long and unbalanced. Critically, he shows a significant platoon split: much stronger from the left side than right side. His pitch selection requires improvement and he doesn't consistently find the barrel. His power grades 40, limited by insufficient strength in upper and lower body development.

Baserunning and speed grade 50, with good form, solid fundamentals, and average quickness. At 6'2" and 203 lbs with a lanky frame and thin lower half, Perdomo has room to grow physically.

Geraldo Perdomo is a Dominican-born shortstop who debuted with the Arizona Diamondbacks in April 2021. Standing 6'2" and weighing 203 pounds, the switch-hitter has accumulated 1,803 at-bats with a .253 batting average, .348 on-base percentage, and .374 slugging percentage, including 34 home runs. Perdomo was highly regarded as a prospect, ranking as the #2 overall prospect in the Diamondbacks organization in 2020 and reaching #72 on Baseball America's prospect list that same year. His rankings have declined since then, listed at #4 within the organization in 2022 and #89 by Baseball America. Early in his professional career, Perdomo earned recognition for elite defensive skills and exceptional strike-zone discipline, receiving organization-wide honors in 2019 and 2020. His career has been marked by assignments across multiple minor league levels including the Arizona Complex League, Northwest League, Midwest League, and Triple-A affiliates. Recent transactions indicate a significant setback: Perdomo was placed on the 10-day injured list in April 2024 retroactive to April 4 with a right meniscus tear, followed by multiple rehab assignments before his eventual activation.

The Arizona Diamondbacks have officially signed Yeraldo Perdomo, the teenage brother of All-Star shortstop Geraldo Perdomo, to a free agent contract featuring a $40,000 signing bonus. Initially reported in January 2026, the deal became official in May 2026. Yeraldo is described as a right-handed hitting corner outfielder with power potential, contrasting with his older brother's contact-focused, count-working shortstop profile.

Geraldo Perdomo's career trajectory serves as a template for what international free agents can achieve. He signed with Arizona in 2016 as a teenager from the Dominican Republic and has since become an MLB All-Star, posting a seven-WAR season and earning a $45 million extension while finishing fourth in National League MVP voting. His path involved an MLB debut at age 21 following years of development and coaching.

Yeraldo will likely report to Arizona's top-tier baseball academy in Boca Chica, Dominican Republic, which opened in November 2024 and provides both baseball development and educational facilities for teenage prospects. While Yeraldo is not expected to reach the major leagues in the near term, the Diamondbacks have demonstrated success with their international prospect development program.