David Price left his start on Friday in the seventh inning after stepping on a bat in a fluke injury.
Price, running to back up a throw to the plate, stepped on the bat with his right foot and immediately came up lame, hopping until he came to a stop near the Royals' dugout.
"I don't feel anything right now, but when I stepped on the bat, it rolled and kind of hyperextended my foot," he said. "It pulled on my hamstring, and when you feel something in your body that you've never felt before, you are going to be concerned.
"I don't know what will happen -- we'll see how I feel tomorrow."