US Open 2020: Serena Williams, Novak Djokovic and others to watch
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Here are 10 tennis stars you should be keeping an eye on at the 2020 US Open. Serena Williams The 38-year-old legend doesn’t appear in championship form — as she lost early in the two WTA tune-up events, in Louisville and Queens, cramping up in the third set Tuesday night. But she saves her best...