BEIJING, CHINA - OCTOBER 02: Yunchaokete Bu of China in action against Novak Djokovic of Serbia in the Men's Singles second round match on day three of China Open at the National Tennis Center on October 02, 2026 in Beijing, China. (Photo by Yanshan Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 02: Yunchaokete Bu of China in action against Novak Djokovic of Serbia in the Men's Singles second round match on day three of China Open at the National Tennis Center on October 02, 2026 in Beijing, China. (Photo by Yanshan Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 02: Novak Djokovic of Serbia reacts in the Men's single second round match against Yunchaokete Bu 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)

BEIJING, CHINA - OCTOBER 02: Novak Djokovic of Serbia reacts in the Men's single second round match against Yunchaokete Bu 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)

BEIJING, CHINA - OCTOBER 02: Novak Djokovic of Serbia in action against Yunchaokete Bu of China in the Men's Singles second round match on day three of China Open at the National Tennis Center on October 02, 2026 in Beijing, China. (Photo by Yanshan Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 02: Novak Djokovic of Serbia reacts in the Men's single second round match against Yunchaokete Bu 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)

BEIJING, CHINA - OCTOBER 02: Yunchaokete Bu of China in action against Novak Djokovic of Serbia in the Men's Singles second round match on day three of China Open at the National Tennis Center on October 02, 2026 in Beijing, China. (Photo by Yanshan Zhang/Getty Images)

BEIJING, CHINA - OCTOBER 02: Novak Djokovic of Serbia in action against Yunchaokete Bu of China in the Men's Singles second round match on day three of China Open at the National Tennis Center on October 02, 2026 in Beijing, China. (Photo by Yanshan Zhang/Getty Images)