Rockies Designate Garrett Acton For Assignment

The Rockies announced they’ve designated reliever Garrett Acton for assignment. That opens a 40-man roster spot for Willi Castro, who has officially signed the two-year deal to which he agreed a week ago.

Colorado claimed Acton off waivers from the Rays at the outset of the offseason. The 27-year-old righty had made one appearance with Tampa Bay, navigating around a couple walks to get through a scoreless inning against the Cubs on September 14. Acton was optioned back to Triple-A one day later. He spent the bulk of the season at the top minor league level, pitching to a 3.68 earned run average across 58 2/3 innings. He struck out more than 30% of opponents while walking 11.4% of batters faced.

Acton’s only other MLB experience comprised six games for the Athletics in 2023. He underwent Tommy John surgery midway through his rookie year and missed all of ’24 rehabbing. The Illinois product averaged 94 MPH on his fastball last year after sitting a tick higher before the surgery. He leans very heavily on the heater but has a mid-80s slider and changeup as well.

Colorado will trade Acton or place him back on waivers within the next five days. He has a couple minor league options remaining, so a team could keep him in Triple-A as long as they’re willing to carry him on the 40-man roster. He doesn’t have the previous career outright necessary to decline a minor league assignment if he goes unclaimed, in which case the Rockies would be able to bring him to camp as a non-roster invitee.