The Twins recalled left-hander Tyler Robertson from Triple-A Rochester to replace Capps on the 25-man roster. In 33 relief appearances for the Red Wings, Robertson went 2-2 with two saves and a 3.77 ERA while striking out 33 batters in 28 2/3 innings. Robertson, who was drafted by the Twins in the third round of the 2006 First-Year Player draft, will be looking to make his Major League debut.
The Twins will use left-hander Glen Perkins and right-hander Jared Burton as co-closers. Perkins got his second save of the season in Friday night's 5-4 win against the Reds.
Capps hadn't pitched in a week due to the inflammation when he came on in the eighth inning of Saturday's 6-0 loss to the Reds at Great American Ball Park. He allowed one unearned run on one hit and one walk. He also struck out one batter while throwing 23 pitches.
Capps told manager Ron Gardenhire Sunday morning that the inflammation and soreness had returned.
"We gave him, what, a week? We basically pushed him out for a week and that's about as long as you can wait," Gardenhire said. "He said he felt great, but the big test was coming out today. That's what happened the last time he threw, he came in the next day and was really sore. Same thing. He said he was sore in his shoulder."
Capps is 1-4 with a 3.42 ERA and 14 saves in 27 appearances.
"We'll probably do what we've been doing. It's worked out OK," Gardenhire said. "I think you should wait until that bullpen door opens. We're not going to sit here and say, 'This guy is going to close.' We're not ready to do that. And, before we do that, I would tell them first."