Angels first baseman Albert Pujols fouled out to third base and knocked Torrealba's catcher's mask off his head on his backswing during the top of the first inning. Torrealba went to the ground on all fours before team trainer Jamie Reed came out on the field to evaluate him.
Torrealba stayed in the game as Yu Darvish struck out Torii Hunter to end the top of the first inning, but he was replaced by Mitch Moreland in the Rangers' lineup when play resumed after the rain delay in the bottom half of the frame, during which the Rangers scored six runs to take a 6-0 lead.
"I'm feeling great," Torrealba said. "I wanted to stay in the game. ... It knocked me out a little bit. I knew what happened. I don't know how I got hit. After that, I felt fine."
Mike Napoli started at first base before moving to catcher and hit his second triple in as many games. Moreland took over at first base and went 1-for-3 with a homer, three RBIs and two runs scored.
Torrealba is listed as day to day, but Napoli is expected to start at catcher on Saturday.
Christian Corona is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.