Roger Federer, Novak Djokovic, Tommy Haas and Grigor Dimitrov singing!
By Sky Sports Tennis
Last Updated: 20/03/17 10:44am
Is this the One Direction of tennis? Watch Roger Federer, Tommy Haas and Grigor Dimitrov belting out Chicago's 'Hard to Say I'm Sorry' - with a cameo from Novak Djokovic!
The players were taking some well-earned time away from the court during Indian Wells - which continues on Saturday night from 6pm, live on Sky Sports, with Federer in semi-final action.
But playing tennis was the furthest thing from their minds during this hilarious rendition of the Chicago tune. Who's the best singer? And where's Andy Murray?
The business is soon to get more serious as Indian Wells approaches its conclusion - Federer meets Jack Sock in Saturday's second semi-final after Stan Wawrinka plays Pablo Carreno.
Federer, the recent Australian Open champion, profited from the withdrawal of Nick Kyrgios before Friday's quarter-final.
But before tuning into Sky Sports' live tennis coverage tonight, check out some of the sport's finest players swap their racquet for a microphone…