P | Bats/Throws: R/R | 6' 7" 200 lbs | Age: 20
MLB Pipeline Rank
Marlins: No. 29
W L ERA G GS SV IP SO WHIP
2026 0 1 8.47 11 7 0 17 27 1.88
Career Minors 0 7 7.45 29 22 0 58 72 1.84
G W-L ERA IP SO WHIP
2026 11 0-1 8.47 17 27 1.88
Career Minors 29 0-7 7.45 58 72 1.84
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Standard Minor League Pitching Statistics

SeasonTmLGLWLERAGGSSVIPHRERHRBBSOWHIP
2023 DSL Miami DSL ROK 0 4 7.40 10 7 0 24.1 22 24 20 3 30 25 2.14
2024 DSL Miami DSL ROK 0 0 9.00 3 3 0 7.0 5 7 7 2 4 12 1.29
2025 DSL Miami DSL ROK 0 2 4.66 5 5 0 9.2 8 7 5 0 6 8 1.45
2026 FCL Marlins FCL ROK 0 1 8.47 11 7 0 17.0 10 18 16 3 22 27 1.88

Scouting Report

2026

Scouting grades: Fastball: 65 | Slider: 55 | Changeup: 50 | Control: 40 | Overall: 40

The Marlins' Rookie-level Dominican Summer League roster is filled with big pitchers with upside, including 2025 signees Kevin Defrank and Adrian Pena, who have some of the best stuff in the system. Santana, who signed for $67,500 in 2023, fits right in as a 6-foot-7 physical specimen. The Dominican Republic native showed plenty of promise early on before undergoing Tommy John surgery in 2024, 13 games into his pro career. He returned 13 months later to make five starts with even more velocity.

Santana was touching the high 90s before his elbow injury and spent his time rehabbing adding significant muscle. The right-hander is now up closer to 250 pounds, compared to his listed weight of 200, enabling him to top out at 102.6 mph on his fastball with impressive ride. His upper-80s cutter-like slider is his best secondary pitch with the potential to be plus, and his low-90s changeup also has promise.

Santana's control has wobbled before and after the injury, but the hope is that added strength will make his delivery more consistent and coordinated. This is one of the highest-upside arms in the system, albeit one who turns 21 in October, has yet to pitch stateside and has to be added to the 40-man roster after the 2027 season or be exposed to the Rule 5 Draft. This will be a key season, more than a year after the surgery, to see how his powerful stuff plays against better competition.


Transactions

Team Date Transaction
03/05/2026 RHP Yohanfer Santana assigned to Miami Marlins Prospects.
11/06/2025 RHP Yohanfer Santana assigned to FCL Marlins from DSL Miami.
11/06/2025 FCL Marlins activated RHP Yohanfer Santana.
11/04/2024 DSL Miami activated RHP Yohanfer Santana from the 60-day injured list.
11/04/2024 DSL Miami activated RHP Yohanfer Santana from the 60-day injured list.
06/25/2024 DSL Miami placed RHP Yohanfer Santana on the 60-day injured list.
06/04/2023 RHP Yohanfer Santana assigned to DSL Miami from DSL Marlins.
01/15/2023 RHP Yohanfer Santana assigned to DSL Marlins.
01/15/2023 Miami Marlins signed free agent RHP Yohanfer Santana to a minor league contract.