Global superstar Justin Timberlake decided to delight the US Open crowd by showing off his dance moves during a change-over in Roger Federer's quarter-final match against Richard Gasquet at Flushing Meadows on Wednesday.
The American singer and The Tonight Show host Jimmy Fallon rose from their seats to perform the dance routine from Beyonce's 'Single Ladies' music video.
After receiving a cheer from the crowd, the famous stars sat back down to watch Federer execute a 6-3 6-3 6-1 victory over Gasquet.
The Swiss 17-time Grand Slam champion will face Stanislas Wawrinka in the semi-finals of the tournament.
Watch Timberlake and Fallon show off their moves in the video below:
