Roger Federer of Switzerland celebrates after scoring during the men's singles first round match against Frances Tiafoe of the United States at the 2017 US Open tennis tournament in New York, the United States, Aug. 29, 2017. (Xinhua/Wang Ying)
2017 US Open tennis tournament: Roger Federer vs. Frances Tiafoe
Source: Xinhua| 2017-08-30 14:45:04|Editor: Yurou
KEY WORDS: tennis
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