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Grigor Dimitrov of Bulgaria hits a return during the FAST4 of Sydney International against Lleyton Hewitt of Australia in Sydney, Australia, on Jan. 8, 2018. Dimitrov won 2-0.(Xinhua/Bai Xuefei)
Grigor Dimitrov of Bulgaria hits a return during the FAST4 of Sydney International against Lleyton Hewitt of Australia in Sydney, Australia, on Jan. 8, 2018. Dimitrov won 2-0.(Xinhua/Bai Xuefei)