Caroline Wozniacki parties with Serena Williams in New York after US Open final

Caroline Wozniacki spent a night out in New York City with Serena Williams, despite the American beating her in the US Open final.

The Dane, who is friends with Williams off the court, came off second best in the Grand Slam final as the world number one secured a 6-3 6-3 victory at Flushing Meadows last night.

After the match, the players put their competitive rivalry aside to enjoy a night out in the Big Apple with American singer Joe Jonas.

Wozniacki posted images of the group partying on her Instagram page.