Nationals acquired LHP Tom Cosgrove from the Astros for cash.
Cosgrove fortifies Washington’s paper-thin left-handed relief depth. He’ll head to Triple-A Rochester after posting a respectable 4.30 ERA, 1.43 WHIP and 29/21 K/BB ratio across 29 1/3 innings in Houston’s system this season. He’s made 74 career appearances in the big leagues since 2023.