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US Open 2017: Roger Federer's first-round five-set battle brings his fitness under the spotlight-Sports News , Firstpost
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US Open results 2017: Roger Federer survives 1st-round threat from 19-year-old Frances Tiafoe - SBNation.com
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Roger Federer and Rafael Nadal move closer to US Open semi-final meeting | US Open Tennis 2017 | The Guardian
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