Trevor Kaiser brings a long, projectable right arm and sneaky velocity upside to Oregon State
In the 2025 summer season, Trevor Kaiser showed raw upside with a fastball sitting 89-91 mph, a compact arm action, and a smooth, low-effort delivery that helps the ball jump out of a 6-foot-6 frame; evaluators also noted a shorter slider in the upper 70s and a changeup in the low 80s, which gives him starter traits if the command keeps sharpening. Oregon State lists him as a freshman RHP from Hanford High, where he posted a 3-2 record, 2.06 ERA, and 28 strikeouts in 34 innings. He looks like a classic “bet on the tools” arm: big frame, easy delivery, and real pitchability potential.
