27. Riley Kelly (79 points, 10 ballots)
Kelly was Colorado’s fourth round pick, 107th overall, in the 2025 draft out of UC-Irvine. The 6’5” 21-year-old righty starter signed for a $700k bonus, just about $15k under the slot value. Like many other high Rockies draftees, Kelly was a high school quarterback with some good athleticism. He was thought of highly enough in high school to be in the top 250 of MLB Pipeline and get drafted in the 20th round in 2022 by Arizona (though he didn’t sign). His standout trait is a high-RPM (3,000+) curveball, combined with low to mid-90s velocity and a decent changeup.
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Mid-season 2025 Rank: HM
High Ballot: 17
Mode Ballot: 17, 21, 22, 28
Future Value: 35+, starting pitcher depth
Contract Status: 2025 Fourth Round, UC-Irvine, Rule 5 Eligible After 2028, three options remaining
MLB ETA: 2029
The first couple years of college didn’t go well for Kelly, who threw only 20 1/3 innings with poor results while battling a back injury. In his draft year, Kelly started the season in the bullpen for UC-Irvine before moving back to the rotation in mid-March. In his second start, he outdueled eventual 2025 #2 overall pick Tyler Bremner en route to a season total of 66 2/3 innings with a 3.78 ERA, 1.47 WHIP, 9.5 K/9 rate, and 4.3 BB/9 rate. Kelly didn’t pitch in an official game in the Rockies’ system after signing.
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Here’s a look at Kelly after his sophomore campaign in 2024:
Kelly was ranked 139th overall by MLB Pipeline in the draft (20 spots ahead of Rockies third round pick and fellow PuRP Ethan Hedges) and is now ranked 19th in the system (two spots behind Hedges) as a 40 FV player with 55 grades on his fastball and curveball:
Kelly’s fastball sits around 92-93 mph and he can crank it up to 96 at times. But his best pitch has always been his curve, especially when he can land it for strikes. It’s a nasty 11-to-5 breaker thrown in the upper 70s that routinely registers over 3,000 rpm and flashes plus. He has a low-80s changeup that can be effective as well.
While Kelly’s strike-throwing has been inconsistent, scouts saw better quality strikes with the move to the rotation. He should get every opportunity to start, with the knowledge that the fastball-curve combination could tick up if he had to move back to the ‘pen.
Here’s what Keith Law of the Athletic wrote about Kelly after the 2025 draft:
UC Irvine right-hander Riley Kelly (4) moved from the Anteaters’ bullpen to the rotation this year and blossomed, making 12 starts along with five relief appearances and lowering his ERA by a run and a half. He’s up to 96 but he sits more 91-93, generating a ton of whiffs on his 82-85-mph straight change, although his 11/5 curveball looks like it should be his best pitch. He has 45 control right now, but if that gets to 50, he’s a starter.
If Kelly can command that hammer, generate a bit more velocity on the fastball, and stick in the rotation, he becomes an interesting starter prospect. Pending that evidence, I ranked Kelly as a 35+ FV player with some upside and put him 26th on my list. Kelly will start 2026 at High-A Spokane or Low-A Fresno, probably the latter.
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