See which prospects had the best seasons of 2025!
Alonzo Tredwell
Tredwell was the Astros 2nd round pick back in the 2023 draft and he had a breakout season this year. The right-hander pitched across three different levels and posted a 3.69 ERA with 122 strikeouts over 100 innings. This included a dominant 40 strikeouts over 22.2 innings in Double-A to end the season.
2025 Stats: 26 G, 3.69 ERA, 100.0 IP, 85 H, 41 ER, 45 BB, 122 K, 11.0 K/9
Bryce Mayer
Mayer, a 16th round pick in last year’s draft and looks to be another diamond
for the Astros. The right-hander started in Single-A and struck out 30 over 17.2 innings earning a promotion to High-A. In Asheville he posted a 2.85 ERA with 45 K in 41 innings. He finished the season in Double-A striking out 37 over 29 innings. He was the Astros minor league pitcher of the year.
2025 Stats: 21 G, 4.11 ERA, 87.2 IP, 76 H, 40 ER, 27 BB, 112 K, 11.5 K/9
Miguel Ullola
Ullola started the season well and then hit a rough patch but turned it around late. In his first full season in Triple-A, Ullola posted a 3.88 ERA with 131 strikeouts over 113.2 innings. He also allowed just 75 hits, good for a .186 batting average against. When he cuts down on the walks, he is dominant.
2025 Stats: 28 G, 3.88 ERA, 113.2 IP, 75 H, 49 ER, 78 BB, 131 K, 10.4 K/9
Ethan Pecko
Pecko had some injuries early in the year but after getting healthy, the 2024 minor league pitcher of the year got back to his normal self. He had a 4.40 ERA in Double-A but that included a 1.75 ERA over his final six outings in Double-A. He got a promotion to Triple-A where he finished with a 3.09 ERA and 48 strikeouts in 35 innings. He should be in Houston in 2026.
2025 Stats: 20 G, 3.83 ERA, 80.0 IP, 73 H, 34 ER, 27 BB, 95 K, 10.7 K/9
Trey Dombroski
After a tough season in 2024 for Dombroski, he turned things around this year. The left-hander posted a 3.61 ERA with 116 strikeouts over 112.1 innings. He allowed just 91 hits in Double-A good for a 7.3 H/9, down from 11.1 H/9 last year. He made two starts in Triple-A too and should start there next season.
2025 Stats: 28 G, 3.95 ERA, 120.2 IP, 99 H, 53 ER, 55 BB, 122 K, 9.1 K/9
