Cain exited Friday's game in the second inning with an undisclosed injury, Thomas Harding of MLB.com reports.
EDGE Analysis
Cain was attempting to finish the second inning when he was forced to leave. He threw a pitch then simply turned to the dugout and shook his head. He was replaced by Albert Suarez. Cain had only given up one hit in 1.2 innings pitched. Expect an update when more information is made available.