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Novak Djokovic, Rafael Nadal, Roger Federer headline 2021 US Open men's singles field - Official Site of the 2023 US Open Tennis Championships - A USTA Event
US Open Tennis on Twitter: "#Federer #Djokovic H2H couldn't be closer. 21-20 career, 3-2 #USOpen. Will Roger widen the gap or Djokovic level? http://t.co/j06LCS1O0T" / Twitter
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2010 U.S. Open, Men's Semifinals: Novak Djokovic Beats Roger Federer In Epic Five-Setter - SBNation.com
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Djokovic and Federer rekindle greatest rivalry in tennis - Official Site of the 2023 US Open Tennis Championships - A USTA Event
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