Caroline Wozniacki use some towels to imitate Serena Williams during her exhibition match against Maria Sharapova in Sao Paulo.

Rafael Nadal ends up his desperate race to the ball in the crowd against Juan Martin Del Potro at Wimbledon.

Fabio Fognini is inimitable. The Italian had fun by pulling down the chair umpire's sock during his last match in London.

Murray, Thiem, Goffin, Firtz or Herbert try the Gong Challenge in London (ATP Finals/Masters).

Federer's Dad defeats Roger

Here is a first-person experience of a Bryan Brothers training session in Miami. You're in the head of Mike Bryan.