Norway's Casper Ruud reacts after being defeated by Italy's Jannik Sinner in their semi-final match at the ATP Finals tennis tournament in Turin on November 16, 2024. (Photo by Marco BERTORELLO / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images)

Italy's Jannik Sinner hits a return to Norway's Casper Ruud during their semi-final match at the ATP Finals tennis tournament in Turin on November 16, 2024. (Photo by Marco BERTORELLO / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images)

Italy's Jannik Sinner serves to Norway's Casper Ruud during their semi-final match at the ATP Finals tennis tournament in Turin on November 16, 2024. (Photo by Marco BERTORELLO / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images)

Norway's Casper Ruud reacts after being defeated by Italy's Jannik Sinner in their semi-final match at the ATP Finals tennis tournament in Turin on November 16, 2024. (Photo by Marco BERTORELLO / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images)

TOPSHOT - Italy's Jannik Sinner hits a return to Norway's Casper Ruud during their semi-final match at the ATP Finals tennis tournament in Turin on November 16, 2024. (Photo by Marco BERTORELLO / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images)

Norway's Casper Ruud reacts during a semifinal tennis match of the ATP World Tour Finals against Italy's Jannik Sinner at the Inalpi Arena in Turin, Italy, Saturday, Nov. 16, 2024. (AP Photo/Antonio Calanni)

Italy's Jannik Sinner returns to Norway's Casper Ruud during their semifinal tennis match of the ATP World Tour Finals at the Inalpi Arena in Turin, Italy, Saturday, Nov. 16, 2024. (AP Photo/Antonio Calanni)

Italy's Jannik Sinner reacts during a semifinal tennis match of the ATP World Tour Finals against Norway's Casper Ruud at the Inalpi Arena in Turin, Italy, Saturday, Nov. 16, 2024. (AP Photo/Antonio Calanni)