Novak Djokovic heads to the U.S. Open chasing a record 25th Grand Slam title, but his latest bid for history carries questions over whether his 39-year-old body can withstand perhaps tennis' most punishing fortnight. https://www.japantimes.co.jp/sports/2026/08/27/tennis/djokovic-endurance-test-usopen/?utm_medium=Social&utm_source=mastodon #tennis #novakdjokovic #usopen