SHANGHAI, CHINA - OCTOBER 16: Roger Federer of Switzerland and Li Na of China react during the 'Roger & Friends Celebrity Doubles' on Day ten of 2026 Rolex Shanghai Masters at Qi Zhong Tennis Centre on October 16, 2026 in Shanghai, China. (Photo by Shi Tang/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: Roger Federer of Switzerland and Li Na of China react during the 'Roger & Friends Celebrity Doubles' on Day ten of 2026 Rolex Shanghai Masters at Qi Zhong Tennis Centre on October 16, 2026 in Shanghai, China. (Photo by Shi Tang/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: Dinara Safina and Marat Safin compete during the 'Roger & Friends Celebrity Doubles' on Day ten of 2026 Rolex Shanghai Masters at Qi Zhong Tennis Centre on October 16, 2026 in Shanghai, China. (Photo by Shi Tang/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: Roger Federer of Switzerland and Li Na of China react during the 'Roger & Friends Celebrity Doubles' on Day ten of 2026 Rolex Shanghai Masters at Qi Zhong Tennis Centre on October 16, 2026 in Shanghai, China. (Photo by Shi Tang/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: Li Na (L) and Wu Di of China pose for a photo during the 'Roger & Friends Celebrity Doubles' on Day ten of 2026 Rolex Shanghai Masters at Qi Zhong Tennis Centre on October 16, 2026 in Shanghai, China. (Photo by Shi Tang/Getty Images)

SHANGHAI, CHINA - OCTOBER 16: (L-R) Roger Federer, Li Na of China, Dinara Safina and Marat Safin pose for a photo during the 'Roger & Friends Celebrity Doubles' on day ten of 2026 Rolex Shanghai Masters at Qi Zhong Tennis Centre on October 16, 2026 in Shanghai, China. (Photo by Lintao Zhang/Getty Images)

United States' Tommy Paul reacts during play against Russia's Daniil Medvedev in the men's singles quarterfinals match at the Shanghai Masters tennis tournament in Shanghai, China, Friday, Oct. 16, 2026. (AP Photo/Andy Wong)

Norway's Casper Ruud returns a ball to Spain's Rafael Jodar during the men's singles quarterfinals match at the Shanghai Masters tennis tournament in Shanghai, China, Friday, Oct. 16, 2026. (AP Photo/Andy Wong)