Jo-Wilfried Tsonga succeeded on knocking Roger Federer out of the French Open today on home clay. In a crucial point during the third set in a straight sets victory, he added injury to injury by managing to hit Federer on the back...although it was almost the face. Seems likely that Tsonga could do nothing here but get the ball back over the net, although there is the small chance there was a bit of psychological intimidation going on.
[youtube]http://www.youtube.com/watch?v=guuQ0hGkfoI[/youtube]