Thomas Cosgrove: Everything you need to know

The Astros reassigned Cosgrove to minor-league camp Sunday, Brian McTaggart of MLB.com reports. Cosgrove is expected to serve as organizational bullpen depth at Triple-A Sugar Land to begin the season after he was unable to secure a spot in the Astros' Opening Day bullpen. The 29-year-old lefty joined Houston on a minor-league deal over the winter after he spent time in the Padres and Cubs organizations in 2025 and made just two relief appearances at the big-league level.

Cosgrove signed a minor-league deal with the Astros on Thursday, which includes an invitation to spring training, Jon Heyman of the New York Post reports. Cosgrove has pitched primarily at Triple-A for the last two seasons, working a total of 18.2 innings in the majors. He'll have the chance to battle for a roster spot during spring training.

The Cubs outrighted Cosgrove to Triple-A Iowa on Wednesday. He's no longer on the 40-man roster, but Cosgrove will remain in the organization after passing through waivers unclaimed. The lefty reliever has spent most of 2025 at Iowa, holding a 4.71 ERA, 1.60 WHIP and 51:25 K:BB over 42 innings.