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US Open 2019. Day nine. Roger Federer of Switzerland during a match with Grigor Dimitrov of Bulgaria. September 03, 2019. USA, New York Photo credit: Sergei' Vishnevskii'/Kommersant/Sipa USA Stock Photo - Alamy
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US Open 2019: Hoping to resurrect after a heart-breaking Wimbledon loss, Roger Federer starts slow at Flushing Meadows-Sports News , Firstpost
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Grigor Dimitrov upsets Roger Federer in 2019 US Open quarterfinals - Official Site of the 2022 US Open Tennis Championships - A USTA Event
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US Open Tennis 2019: TV Schedule, Picks for Wednesday Afternoon Draw | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
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2019 US Open Notebook: Federer falls, Serena cruises on Day 9 - Official Site of the 2022 US Open Tennis Championships - A USTA Event
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Roger Federer recovers against Sumit Nagal, rolls into Round 2 - Official Site of the 2022 US Open Tennis Championships - A USTA Event
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