BEIJING, CHINA - SEPTEMBER 30: Juan Manuel Cerundolo of Argentina returns a shot against Yunchaokete Bu of China in the Men's first round on day one of China Open at the National Tennis Center on September 30, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - SEPTEMBER 30: Juan Manuel Cerundolo of Argentina returns a shot against Yunchaokete Bu of China in the Men's first round on day one of China Open at the National Tennis Center on September 30, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - SEPTEMBER 30: Yunchaokete Bu of China returns a shot against Juan Manuel Cerundolo of Argentina in the Men's first round on day one of China Open at the National Tennis Center on September 30, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - SEPTEMBER 30: Yunchaokete Bu of China looks on against Juan Manuel Cerundolo of Argentina in the Men's first round on day one of China Open at the National Tennis Center on September 30, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - SEPTEMBER 30: Yunchaokete Bu of China returns a shot against Juan Manuel Cerundolo of Argentina in the Men's first round on day one of China Open at the National Tennis Center on September 30, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

France's Arthur Fils plays a shot to France's Luca van Assche during their men's singles tennis match at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on September 30, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)

France's Luca van Assche hits a shot to France's Arthur Fils during their men's singles tennis match at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on September 30, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)

BEIJING, CHINA - SEPTEMBER 30: Yunchaokete Bu of China reacts against Juan Manuel Cerundolo of Argentina in the Men's first round on day one of China Open at the National Tennis Center on September 30, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)