After semifinal runs at all three Grand Slams this season, 38-year-old Novak Djokovic arrives at the U.S. Open chasing history while confronting the limits of an aging body. https://www.japantimes.co.jp/sports/2025/08/21/tennis/djokovic-us-open-preview/?utm_medium=Social&utm_source=mastodon #tennis #novakdjokovic #usopen