Roger Federer offered his team-mate Novak Djokovic some coaching advice as Team Europe looked to maintain their advantage over Team World at the Laver Cup on Saturday.
Kevin Anderson caused one of the biggest upsets of the tournament so far, beating Djokovic 7-6 (7-5) 5-7 10-6.
The South African served his way out of trouble, while errors from Djokovic meant he again failed to put any points on the board after Friday's doubles loss with Federer.
One of the most unforgettable moments of the dramatic match came just before the start of the deciding tie-breaker when the Swiss maestro offered the reigning Wimbledon and US Open champion some much-needed advice.
Mark Petchey said Federer's advice was "great coaching" with the analyst adding that the 37-year-old is "so in-tune with the sport."
Click on the video above to listen in on what Federer had to say to Djokovic and then watch the Serb's sumptuous volley in the video below...
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Tennis is back on Sky Sports screens with the Laver Cup in September while we will also have coverage of the ATP Finals in November with every match live on Sky Sports.