"He's here with us, he's ready to go," general manager Jeff Luhnow said. "It's just a matter of right now we feel the extra lefty is more important. Bass was not able to pitch today anyway given that he was able to pitch two days ago. The soonest we'd be able to activate him would be tomorrow, but again, I think having three lefties in the bullpen for this series is more important for us."
Bass had appeared in 15 games for the Astros this year, going 1-0 with a 4.50 ERA in 18 innings. He allowed 17 hits and nine earned runs with five walks.
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. Mike Vernon is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.