Video: Novak Djokovic, Gerard Butler reenact "this is Sparta!" scene at US Open

World number one tennis star Novak Djokovic celebrated his US Open victory on Sunday by reenacting a scene with Gerard Butler from the actor's film 300.

The Serbian managed to claim his 10th Grand Slam title with a four-set victory over Roger Federer at Flushing Meadows in New York.

After the match, Djokovic told The Mirror that he and the Scotland-born Hollywood actor are "good friends" after meeting several years ago.

In a video uploaded to Twitter by Djokovic's wife Jelena, the tennis star and Butler yell the famous line, "this is Sparta!" to the camera.

This is Spartaaaaaaa!!!!! #USOpenChampion #TeamDjokovic @DjokerNole @gerardbutler #10 #NoleFam pic.twitter.com/5XVyd6MA8d

— Jelena Djokovic (@JelenaRisticNDF) September 14, 2015