But he is confident about his start on Saturday against the Braves after his bullpen session on Wednesday.
"No issues," Harrison said. "I feel the same as I did before. It didn't affect my mechanics or anything. I'm good to go."
Harrison, in 12 starts, is 5-6 with a 3.31 ERA that ranks as the 18th lowest in the American League. But in the past month he has had to deal with a blister on his left index finger, a kidney stone that finally passed on Monday, and a bruised arm. He also had a four-inning shutout against Oakland washed away by rain.