Pic of Novak Djokovic coaching Rafael Nadal, Roger Federer in Laver Cup goes viral

A picture of Novak Djokovic coaching Rafael Nadal and Roger Federer during their doubles match in Laver Cup has gone viral on social media. The match was Federer's last of his professional career. Reacting to the picture, a fan wrote, "The most beautiful sight in tennis!" Another wrote, "So lucky I got to see these three play!"