Miguel Ullola

Armed with one of the better fastballs among minor-league starters, Ullola finished the year with a 3.81 ERA, 1.12 WHIP and 70 strikeouts over his final 54.1 innings, including one start at Triple-A to close the year. Even amid that success, he walked 30 batters (5.0 BB/9), but Ullola was effective enough in 2024 that he'll be developed as a starting pitcher for at least another season. Ullola's 14 percent walk rate on the year is his best mark to date, so he's trending in the right direction. His mid-90s fastball has excellent movement and misses bats in the zone. His upper-80s slider/cutter is his go-to secondary offering while his curveball and changeup lag behind. He finished with a career-high 130.1 innings on the season, which is another key datapoint for the 22-year-old. He is not yet on the 40-man roster, but Ullola is Houston's best pitching prospect, and he'll open the year at Triple-A so he'll be one call away if help is needed in the rotation this summer. If his command is really poor at Triple-A in 2025, he could be ticketed for late-inning relief work in 2026.