Novak Djokovic was seen conducting a booing crowd during an ATP World Tour Finals 2023 match against Jannik Sinner, which features in a video shared by Tennis TV about the tournament's funniest moments. Djokovic was seen sitting on a couch while engaging in this gesture. Sinner defeated Djokovic 7-5, 6-7(5), 7-6(2) in the match.