Russia's Daniil Medvedev reacts during the singles tennis match of the ATP World Tour Finals against United States' Taylor Fritz, at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
United States' Taylor Fritz celebrates after winning against Russia's Daniil Medvedev the singles tennis match of the ATP World Tour Finals at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Italy's Jannik Sinner serves the ball to Australia's Alex de Minaur during their singles tennis match of the ATP World Tour Finals at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Italy's Jannik Sinner celebrates after winning the singles tennis match of the ATP World Tour Finals against Australia's Alex de Minaur, at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Daniil Medvedev looks on during a break in the singles tennis match of the ATP World Tour Finals against Taylor Fritz, of the United States, at the Pala Alpitour, in Turin, Italy, Sunday, Nov. 10, 2024. (Marco Alpozzi/LaPresse via AP)
Russia's Daniil Medvedev reacts during the singles tennis match of the ATP World Tour Finals against United States' Taylor Fritz, at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Italy's Jannik Sinner returns the ball to Australia's Alex de Minaur during their singles tennis match of the ATP World Tour Finals at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Russia's Daniil Medvedev reacts during the singles tennis match of the ATP World Tour Finals against United States' Taylor Fritz, at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Australia's Alex de Minaur returns the ball to Italy's Jannik Sinner during their singles tennis match of the ATP World Tour Finals at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Italy's Jannik Sinner celebrates after winning the singles tennis match of the ATP World Tour Finals against Australia's Alex de Minaur, at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)
Daniil Medvedev throws a broken racket during his singles tennis match of the ATP World Tour Finals against Taylor Fritz, of the United States, at the Pala Alpitour, in Turin, Italy, Sunday, Nov. 10, 2024. (Marco Alpozzi/LaPresse via AP)
United States' Taylor Fritz returns the ball to Russia's Daniil Medvedev during their singles tennis match of the ATP World Tour Finals at the Inalpi Arena, in Turin, Italy, Sunday, Nov. 10, 2024. (AP Photo/Antonio Calanni)