Pedro Grifol pulled Luis Robert from Saturday's loss to the Tampa Bay Rays after the Chicago White Sox outfielder failed to give full effort on an infield grounder he hit in the first inning. 

The speedy Robert may have been able to turn the grounder into an infield hit had he been running full speed.

After a dugout conversation with Grifol, Robert stayed in the game to play center field in the top of the second, but Grifol lifted him before he could bat again. 

The White Sox broadcast noted that Robert appeared to be grimacing at one point while making his way to first base even as the club confirmed that he was pulled from the game via "manager's decision" and not with any reported injury.

Post-game, however, Robert did indeed say he has a leg issue.