The injury occurred on a play at the plate in the bottom of the first inning, when Jimmy Rollins slid into home on a single by right fielder Hunter Pence. Though shaken up, Barajas stayed in the game for the rest of the inning, but Mike McKenry pinch-hit for him in the second and remained in the game at catcher.
Barajas said after the game that the outside part of his knee is sore.
"When [Rollins] slid by, I put my foot out there, and he caught the bottom of my foot," said Barajas, who is hitting .224 with seven home runs and 18 RBIs. "I'm assuming he maybe jarred it a little bit, just pushed that knee back. I didn't hear a pop or anything. Kind of a fluke thing."
McKenry took a foul ball to his right hand later in the game but stayed in. He sported a bruise but said that he can grip a bat.
Asked if there was any discussion about him coming out of the game, McKenry said with a smile, "[Even] if there was, I wasn't going anywhere."
McKenry went 2-for-4.
Jake Kaplan is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.