To replace Perkins on the roster, the Twins have selected the contract of left-hander Sean Henn from Triple-A Rochester. Henn, who posted a 1.13 ERA and recorded six saves in 15 appearances for Rochester, will be used out of the bullpen, and he will join the club on Tuesday in Chicago.
Perkins said that during Monday's start, he felt some tingling in his fingers whenever he straightened his left arm. He thinks it's probably a nerve issue, but the club is taking every precaution just to make sure.
Perkins gave up six runs on seven hits in his shortened start, which was a continuation of some recent struggles. After pitching eight innings in each of his first three outings and allowing a combined four runs over that time, he has posted a 9.39 ERA over his last five starts.
This isn't the first time that the elbow has bothered him this season. He said that he couldn't pinpoint exactly when he first felt something, but after struggling through this latest start and unable to finish off many of his pitches, he felt it was time to tell the training staff what he was feeling.
"You battle through some things, and you've got to learn which fights you can pick and which ones you can give up on," Perkins said. "This was one where I felt like I wasn't doing the team any good being out there pitching with my arm hurting and feeling like it did. I needed to tell them. It got to the point tonight where it felt like the right thing to do."
With Perkins' next turn in the rotation not set to come until Saturday, Gardenhire said that the team will wait to decide who will take that start. R.A. Dickey, who pitched 4 1/3 scoreless innings of relief on Monday, could be an option.
For now, Henn will give the team an extra arm in a bullpen that's seen its fair share of work over the past week.
"As soon as we got to our bullpen in the first inning, I said we're just going to end up sending a catcher down and going with 13 pitchers, which I swore we would never do," Gardenhire said. "That was what my first reaction was, and then we'd have three guys off the bench. ... But all of this came up, so we have a little extra time."