BEIJING, CHINA - OCTOBER 01: Botic van de Zandschulp of the Netherlands plays a backhand against Francisco Cerundolo of Argentina in the Men's first round on day two of China Open at the National Tennis Center on October 01, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 01: Botic van de Zandschulp of the Netherlands plays a backhand against Francisco Cerundolo of Argentina in the Men's first round on day two of China Open at the National Tennis Center on October 01, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

USA's Alex Michelsen plays a shot to Spain's Carlos Alcaraz during their men's singles tennis match at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 1, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)

Spain's Carlos Alcaraz plays a shot to USA's Alex Michelsen during their men's singles tennis match at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 1, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)

BEIJING, CHINA - OCTOBER 01: Qinwen Zheng of China celebrates winning the Women's first round match against Han Shi of China on day two of China Open at the National Tennis Center on October 01, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

Japan's Kei Nishikori reacts after his men's singles tennis match against USA's Frances Tiafoe at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 1, 2026. Nishikori announced his retirement from the sport after the tournament. (Photo by Rie KIKUCHI / AFP via Getty Images)

Japan's Kei Nishikori gestures as he retires from the sport after his men's singles tennis match against USA's Frances Tiafoe at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 1, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)

Japan's Kei Nishikori waves to fans as he retires from the sport after his men's singles tennis match against USA's Frances Tiafoe at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 1, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)