World number one tennis star Novak Djokovic celebrated his second-round victory at the US Open by dancing with a spectator on court.
The Serbian, who executed a 6-4 6-1 6-2 win over Andreas Haider-Maurer on Wednesday, spotted the crowd member's moves during the match.
The male spectator would perform a dance for fans in between points at Flushing Meadows in New York, and after the match, he joined Djokovic on court for a dance-off.
The nine-time Grand Slam champion was in a relaxed mood as he threw on an 'I heart NYC' T-shirt given to him by the dancing fan.
Watch Djokovic show off his moves in the video below: