BEIJING, CHINA - OCTOBER 04: Novak Djokovic of Serbia reacts in the Men's Singles quarterfinal match against Alexander Zverev of Germany 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: Novak Djokovic of Serbia reacts in the Men's Singles quarterfinal match against Alexander Zverev of Germany 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: Novak Djokovic of Serbia reacts in the Men's Singles quarterfinal match against Alexander Zverev of Germany 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: Novak Djokovic of Serbia reacts in the Men's Singles quarterfinal match against Alexander Zverev of Germany 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: Novak Djokovic of Serbia reacts in the Men's Singles quarterfinal match against Alexander Zverev of Germany 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: Novak Djokovic of Serbia reacts during the Men's Singles quarterfinal match against Alexander Zverev of Germany on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Emmanuel Wong/Getty Images)

BEIJING, CHINA - OCTOBER 04: Novak Djokovic of Serbia reacts during the Men's Singles quarterfinal match against Alexander Zverev of Germany on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Emmanuel Wong/Getty Images)

BEIJING, CHINA - OCTOBER 04: Novak Djokovic of Serbia reacts durin the Men's Singles quarterfinal match against Alexander Zverev of Germany on day five of China Open at the National Tennis Center on October 04, 2026 in Beijing, China. (Photo by Emmanuel Wong/Getty Images)