Right-hander Trystan Magnuson replaced McCarthy with the A's trailing, 6-0.
Chavez' liner caromed off McCarthy's shin all the way to the Rangers' bullpen in right field, and he pulled into second with a double. McCarthy fell to the ground but was able to stand up. After being examined by trainers, he walked slowly to the dugout.
McCarthy gave up six runs in the second inning to the Rangers, his former team. The Rangers batted around in the inning. Four of the runs were earned.