Novak Djokovic teams up with stars for tennis charity event

World tennis number one Novak Djokovic took to the court with a number of celebrities in La Quinta, California for Variety - The Children's Charity of The Desert.

The 25-year-old teamed up with Mr Selfridge actor Jeremy Piven for a doubles clash against US player Mardy Fish and LMFAO rapper Redfoo.

Fish wrote on Twitter: "Enjoyed playing doubles with @redfoo. Dude can play! @jeremypiven, not so much :)"

Meanwhile, Spanish pro Rafael Nadal also had some fun on court in New York City by playing alongside Hollywood actor Ben Stiller.