France's Arthur Fils reacts as he plays against Monaco's Valentin Vacherot during their men's singles quarter-final tennis match at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 4, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)

France's Arthur Fils hits a return against Monaco's Valentin Vacherot during their men's singles quarter-final tennis match at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 4, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)

BEIJING, CHINA - OCTOBER 04: Nikola Bartunkova of the Czech Republic plays a forehand against Aryna Sabalenka in the Women's Singles Third Round match on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 04: Nikola Bartunkova of the Czech Republic plays a forehand against Aryna Sabalenka in the Women's Singles Third Round match on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 04: Nikola Bartunkova of the Czech Republic plays a forehand against Aryna Sabalenka in the Women's Singles Third Round match on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 04: Nikola Bartunkova of the Czech Republic plays a forehand against Aryna Sabalenka in the Women's Singles Third Round match on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 04: Nikola Bartunkova of the Czech Republic plays a forehand against Aryna Sabalenka in the Women's Singles Third Round match on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

Monaco's Valentin Vacherot reacts as he plays against France's Arthur Fils during their men's singles quarter-final tennis match at the ATP Tour Japan Open Tennis Championships at the Ariake Tennis Forest Park in Tokyo on October 4, 2026. (Photo by Rie KIKUCHI / AFP via Getty Images)