Serbia's Novak Djokovic addresses the media following a practice session ahead of the Adelaide International Tennis tournament in Adelaide, Australia, Thursday, Dec. 29, 2022. (AP Photo/Kelly Barnes)
Greece's Stefanos Tsitsipas returns the ball to Italy's Jannik Sinner during their singles tennis match of the ATP World Tour Finals at the Pala Alpitour, in Turin, Italy, Sunday, Nov. 12, 2023. (AP Photo/Antonio Calanni)