Novak Djokovic went up against one of the sport’s most powerful young players Friday and fell to Jannik Sinner in the Wimbledon semifinal round Friday. The 38-year-old Djokovic was hoping to get a chance to compete against superstar Carlos Alcaraz in the championship Sunday, but Sinner dominated in a 6-3, 6-3, 6-4 triumph.

Fast forward to his semifinal against Jannik Sinner, and something pretty unexpected happened on court: Sinner actually apologized to Novak about that fall when the two met at the net following match point. And of course, in true Djokovic fashion, he had the classiest response that’s got everyone talking about his sportsmanship.