P | Chicago White Sox
Bats/Throws: R/R | 6' 8" 203 lbs | Age: 24
MLB Pipeline Rank
White Sox: No. 21
W L ERA G GS SV IP SO WHIP
2025 2 2 2.83 31 0 3 35 45 1.34
Career Minors 6 10 4.18 104 15 11 172.1 194 1.38
G W-L ERA IP SO WHIP
2025 31 2-2 2.83 35 45 1.34
Career Minors 104 6-10 4.18 172.1 194 1.38
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Standard Minor League Pitching Statistics

SeasonTmLGLWLERAGGSSVIPHRERHRBBSOWHIP
2021 DSL Rays 1 DSL ROK 1 2 4.21 14 2 0 25.2 25 17 12 0 19 21 1.71
2022 FCL Rays FCL ROK 1 1 6.44 13 10 0 36.1 36 29 26 1 22 40 1.60
2023 FCL Rays FCL ROK 1 3 5.79 11 3 0 28.0 13 20 18 0 23 32 1.29
2024 2 Teams Minors 1 2 2.67 24 0 5 33.2 24 15 10 0 19 37 1.28
2024 FCL Rays FCL ROK 0 1 4.91 8 0 0 11.0 11 10 6 0 9 16 1.82
2024 Charleston RiverDogs CAR A 1 1 1.59 16 0 5 22.2 13 5 4 0 10 21 1.01
2025 2 Teams Minors 2 2 2.59 42 0 6 48.2 36 16 14 1 21 64 1.17
2025 Charleston RiverDogs CAR A 0 0 1.98 11 0 3 13.2 6 4 3 0 4 19 0.73
2025 Bowling Green Hot Rods SAL A+ 2 2 2.83 31 0 3 35.0 30 12 11 1 17 45 1.34
Bowling Green Hot Rods SAL A+ 2 2 2.83 31 0 3 35.0 30 12 11 1 17 45 1.34
Charleston RiverDogs CAR A 1 1 1.73 27 0 8 36.1 19 9 7 0 14 40 0.91

Scouting Report

2025

Scouting grades: Fastball: 70 | Slider: 60 | Control: 40 | Overall: 40

After Alberto signed with the Rays for $70,000 out of the Dominican Republic in 2019, he lost his first pro season to the pandemic and then needed three full years, and part of a fourth, in Rookie ball. He had his best season yet in 2025, compiling a 2.59 ERA with 64 strikeouts in 48 2/3 innings between two Class A stops, though Tampa Bay declined to protect him on its 40-man roster. The White Sox plucked him in the Rule 5 Draft at the Winter Meetings and must keep him on their active big league roster throughout 2026, or else place him on waivers and offer him back to the Rays for half of his $100,000 selection price.

Alberto's electric arm made him a prime Rule 5 target. He relies extensively on a fastball that parks at 96-98 mph and reaches 101 with natural cutting action, and when it's at its best, hitters can't stop chasing it out of the zone. He backs it up with a mid-80s slider that features sweeping life.

Alberto's 6-foot-8 build, his low three-quarters arm slot and the angle and extension he creates makes him even more difficult to hit. He has only worked 172 1/3 innings as a pro and his control and command still have a long way to go, but he has closer upside. He's not really ready for the Majors, so Chicago will break him in gently as it tries to hold on to him.


Transactions

Team Date Transaction
12/10/2025 Chicago White Sox purchased contract of RHP Alexander Alberto in the Rule 5 Draft.
05/13/2025 RHP Alexander Alberto assigned to Bowling Green Hot Rods from Charleston RiverDogs.
09/25/2024 RHP Alexander Alberto assigned to Mesa Solar Sox.
06/25/2024 RHP Alexander Alberto assigned to Charleston RiverDogs from FCL Rays.
06/25/2024 Charleston RiverDogs activated RHP Alexander Alberto.
01/02/2024 Perth Heat reassigned RHP Alexander Alberto to the minor leagues.
11/05/2023 RHP Alexander Alberto assigned to Perth Heat.
06/05/2022 RHP Alexander Alberto assigned to FCL Rays.
07/09/2021 RHP Alexander Alberto assigned to DSL Rays1.
11/25/2019 Tampa Bay Rays signed free agent RHP Alexander Alberto to a minor league contract.