The Astros have designated left-handed reliever Joe Thatcher for assignment in order to clear room on the active roster for Vincent Velasquez, reports MLB.com’s Brian McTaggart (via Twitter).
Thatcher signed a minor league deal with Houston in the offseason but made the team out of Spring Training and has enjoyed generally successful results in his first year with the Astros. He’s posted a 3.79 ERA and averaged better than 10 strikeouts per nine innings, though he’s also battled his command, yielding 5.2 walks per nine frames as well.