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Switzerland's Roger Federer serves during the men's singles semifinal match against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 13, 2018. Federer lost 0-2. (Xinhua/Fan Jun)
Switzerland's Roger Federer serves during the men's singles semifinal match against Borna Coric of Croatia at 2018 ATP Shanghai Masters tennis tournament in Shanghai, east China, Oct. 13, 2018. Federer lost 0-2. (Xinhua/Fan Jun)