"After he caught that ball in center, the line drive that knuckled on him, I never knew that he had any issue," Reds manager Bryan Price said. "We talked between innings, kind of messing around between innings, and I didn't know. I saw him after that ball that he caught out there in the outfield and he's kind of moving around funky."
Arismendy Alcantara pinch-hit for Hamilton in the eighth inning, and the Major Leagues' stolen base leader will be examined again on Wednesday.
"We were able to get him out of there, and hopefully there won't be any lingering issues with it, but we'll have to wait till tomorrow," Price said.
Hamilton, who is batting .254 with a .305 on-base percentage and 44 steals, was 2-for-4 in the game and batting .314 (22-for-70) in the second half.
Mark Sheldon has covered the Reds for MLB.com since 2006, and previously covered the Twins from 2001-05. Follow him on Twitter @m_sheldon and Facebook and listen to his podcast This story was not subject to the approval of Major League Baseball or its clubs.