"I felt good, so I'm back in there," Carpenter said. "Obviously, I felt something [on Saturday], and it was an awkward swing. I was stretching the rest of the game, but I didn't think it was anything serious. I felt pretty good about it."
Carpenter first felt the tweak during a swing he took in his seventh-inning at-bat on Saturday. It was after manager Mike Matheny then noticed Carpenter trying to stretch his side in the field and while on the on-deck circle in the ninth that he summoned the infielder over to ask if something was wrong.
With only a few seconds to decide whether to let Carpenter hit, Matheny opted to call him back to the dugout.
"I can't risk losing a guy for two weeks if there's the chance we can pull him out for one at-bat," Matheny said. "It hurt him yesterday more than anything that he felt like he let his teammates down and couldn't answer the bell late in the game. And I know that about him. We need him to let us in on what's going on. We'll try to do the right thing, but it's a trust that has to be built up between us."
Jenifer Langosch is a reporter for MLB.com. Read her blog, By Gosh, It's Langosch, and follow her on Twitter @LangoschMLB. This story was not subject to the approval of Major League Baseball or its clubs.