Rios, who doubled in Elvis Andrus, scored from second base on a hit to tie the game at 2. As Rios slid towards home plate, he knocked the ball loose from catcher Carlos Corporan.
As soon as Rios stood up it was obvious something wasn't right physically. He walked toward the Rangers dugout gingerly.
Rios was making a start in right field after sitting out the first two games of the series at Minute Maid Park, in an attempt to give the ankle more time to heal. Rios sprained the ankle on July 19 at Toronto and missed three games from July 20-22 due to the injury.
Richard Dean is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.