Carroll made his first start of the season at third base on Tuesday, with Casilla getting the start at second base. After five straight starts at third base, Plouffe wasn't in the lineup against the Indians.
"We're just playing everybody," Gardenhire said. "Valencia is down in Triple-A trying to get his stuff right. Plouffe is up here trying to get his stuff right here. So we don't have a total solution. We have people we're going to try to mix and match."
Gardenhire added that Casilla still has work to do at third base, as he's made just two appearances there so far this season as a defense replacement. Casilla has played third just eight times in his career, with one start there coming in 2010.
Casilla played one inning at third on Monday, but Gardenhire said he's more comfortable using Carroll there as he's had extensive experience at the position.
"We had Alexi there last night, and with time, I think he can play there a little bit," Gardenhire said. "But Jamey knows how to play there. Alexi, he was in and we kept telling him to move back, and he kept thinking they were going to bunt. But we were like, 'There's two strikes. I don't think they're gonna bunt.' So we just have to do some work him over there."