Swiss former tennis player Roger Federer waves to fans during a show held at the Shanghai Masters tennis tournament in Shanghai on October 11, 2024. (Photo by Hector RETAMAL / AFP) (Photo by HECTOR RETAMAL/AFP via Getty Images)

Swiss former tennis player Roger Federer waves to fans during a show held at the Shanghai Masters tennis tournament in Shanghai on October 11, 2024. (Photo by Hector RETAMAL / AFP) (Photo by HECTOR RETAMAL/AFP via Getty Images)

SHANGHAI, CHINA - OCTOBER 11: Novak Djokovic of Serbia reacts in the Men's Singles Quarterfinals match against Jakub Mensik of Czechia on Day 12 of 2024 Shanghai Rolex Masters at Qi Zhong Tennis Centre on October 11, 2024 in Shanghai, China. (Photo by Lintao Zhang/Getty Images)

SHANGHAI, CHINA - OCTOBER 11: (EDITORS NOTE: Image has been converted to black and white.) Novak Djokovic of Serbia reacts in the Men's Singles Quarterfinals match against Jakub Mensik of Czechia on Day 12 of 2024 Shanghai Rolex Masters at Qi Zhong Tennis Centre on October 11, 2024 in Shanghai, China. (Photo by Lintao Zhang/Getty Images)

Serbia's Novak Djokovic hits a return to Czech Republic's Jakub Mensik during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 11, 2024. (Photo by Hector RETAMAL / AFP) (Photo by HECTOR RETAMAL/AFP via Getty Images)

Serbia's Novak Djokovic serves to Czech Republic's Jakub Mensik during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 11, 2024. (Photo by Hector RETAMAL / AFP) (Photo by HECTOR RETAMAL/AFP via Getty Images)

Serbia's Novak Djokovic reacts as he plays against Czech Republic's Jakub Mensik during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 11, 2024. (Photo by Hector RETAMAL / AFP) (Photo by HECTOR RETAMAL/AFP via Getty Images)

Serbia's Novak Djokovic reacts as he plays against Czech Republic's Jakub Mensik during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 11, 2024. (Photo by Hector RETAMAL / AFP) (Photo by HECTOR RETAMAL/AFP via Getty Images)