Francesca Schiavone hit a winning drop shot as the ball from Zhu Lin hit the ground before to pass the net. But the chair umpire didn't see it and the Chinese tell that she don't know anything about it.
Novak Djokovic was on the top of his game for his debut in the ATP Finals (Masters) against Kei Nishikori in London this sunday. This sublime forehand slap illustrates it perfectly.