A Serbian Tennis Player Goes Crazy at an Umpire at Wimbledon

A Serbian tennis player named Victor Troicki flipped out yesterday at Wimbledon because of a bad call, and then lost the match on the next point.  And then he flipped out some more!  At the beginning he’s shouting “White!  White!” and showing the umpire that the ball has no chalk on it, which would mean it missed the line?