Thomas White

21-Year-Old PitcherP
Miami Marlins AAA
2026 Fantasy Outlook
White's control is pretty shaky, but everything else about the 6-foot-5 southpaw screams front of the rotation. He climbed from High-A to Triple-A in his age-20 season, logging a 2.31 ERA, 1.18 WHIP and 145:51 K:BB in 89.2 innings. White, who received a $4.1 million bonus out of high school in 2023, walked 10 batters in 9.1 innings at Triple-A to close 2025, but he also struck out 17 in those two starts. He touches the upper 90s with his fastball, which has excellent movement, but his plus heater might be his third-best pitch. White's 70-grade sweeper is one of the best pitches in the minors and works against righties and lefties, while his changeup took a big step forward in 2025 as a plus weapon against righties. The Marlins always seem to have plenty of pitching, but White is the team's top prospect and he'll likely be up this summer if he gets the walks under control. Read Past Outlooks
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