Roger Federer Plays with Giant Racket as SpongeBob SquarePants Looks On

Roger Federer's preparations for the Australian Open took a lighthearted turn on Sunday, when he played in an exhibition match using a giant racket. 

The 17-time Grand Slam winner was joined by Garbine Muguruza, Victoria Azarenka and Radek Stepanek in Brisbane, Australia, along with mascots dressed as the Teenage Mutant Ninja Turtles and SpongeBob SquarePants.

Federer will shift to a more serious note on Monday with the start of the Brisbane International, where he is the defending champion.

[h/t the Guardian]