Maton will miss the postseason after undergoing surgery on a broken right hand, Danielle Lerner of the Houston Chronicle reports.
The injury was self-inflicted, as it occurred after Maton punched his locker following a poor outing to close the regular season last Wednesday against the Phillies. Maton wasn't one of Houston's highest-leverage options this season, but the Astros still would have preferred having him and his 3.84 ERA available out of the bullpen.