Wacha was removed from Wednesday's game against the Diamondbacks with an apparent injury, Bob Nightengale of USA Today reports.
It's unclear what forced Wacha to exit Wednesday's game with a trainer, but it comes at a tough time with less than a week left in the regular season. Prior to exiting, the right-hander allowed two runs on four hits and a walk while striking out three batters in 1.2 innings. Mike Mayers entered the game in his place.