Novak Djokovic of Serbia celebrates after winning the men's singles final match against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Fan Jun)
Novak Djokovic of Serbia celebrates after winning the men's singles final match against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Fan Jun)
Novak Djokovic of Serbia celebrates after winning the men's singles final match against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Fan Jun)
Novak Djokovic of Serbia celebrates after winning the men's singles final match against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Fan Jun)
Novak Djokovic of Serbia celebrates after winning the men's singles final match against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Fan Jun)
Novak Djokovic of Serbia poses with the trophy during the awarding ceremony of the men's singles event at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Ding Ting)
Novak Djokovic of Serbia celebrates after winning the men's singles final against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Ding Ting)
Novak Djokovic of Serbia kisses the trophy during the awarding ceremony of the men's singles event at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 14, 2018. Novak Djokovic won 2-0 in the final and claimed the title of the event. (Xinhua/Ding Ting)