Athletics' Zobrist leaves game with knee soreness.

Oakland Athletics second baseman Ben Zobrist came out of Sunday's game in the bottom of the fifth inning with knee soreness. 

Analysis:

Zobrist struggled with a heel injury earlier this week, but it is not clear if that is the reason for his departure on Sunday. He had singled in a run in the top of the fifth, but left while in the field in the bottom half.