May has not pitched since June 1 and wasn't available in Tuesday's game. "[May] has been a little sore, so we've been trying to protect him. I''m hopeful he's back and ready to go to work tomorrow," manager Paul Molitor told the Minneapolis Star Tribune.
May had been showing some signs of improvement recently after a terrible month of May (8.74 ERA) by allowing one run in four innings over his last five games with a 8:1 K:BB. Hopefully his soreness isn't the result of a significant injury.