Rays closer Troy Percival, who collapsed on the mound after throwing a strikeout pitch in the ninth inning of Tampa Bay’s 5-3 victory against the Rangers, will undergo a magnetic resonance imaging exam on his left hamstring tonight. The Rays will know more about his status after the MRI.

Percival complained of hamstring soreness during the recent road trip, but appeared to have overcome it. He retired the first batter he faced today, then struck out Brandon Boggs looking with a 77-mph curveball. As the ball left his hand, though, Percival collapsed on the mound. He grabbed at the back of his left leg with his glove as he fell. He tried to throw one warmup pitch afterward, but immediately walked to the dugout when it became apparent he couldn’t continue.

Dan Wheeler came on to finish the inning and the game.