Phillies third baseman Will Middlebrooks went after a pop up in shallow left field and had his left ankle slid into by the left fielder, who was also attempting to make a play on the ball. 

Middlebrooks was in immediate pain and dropped the ball as a result of the collision.

Middlebrooks would remain down on the field until he was carted off.  You hate to see what looks like a severe injury this early in Spring Training.