Novak Djokovic plays 20-year-old Californian Jenson Brooksby in the fourth round of the U.S. Open in Arthur Ashe Stadium at night, the next step in the No. 1 seed’s bid to become the first man since 1969 to win a calendar-year Grand Slam. Djokovic also is trying to win his 21st career major trophy and break a tie with Roger Federer and Rafael Nadal for the most among men. Djokovic tied them by winning this year’s Australian Open, French Open and Wimbledon championships. Brooksby is a wild-card entry who began this season ranked outside the top 300 and is now a career-best 99th. Shelby Rogers follows her upset of top-seeded Ash Barty with a match against 18-year-old Emma Raducanu, while Tokyo Olympics gold medalist Belinda Bencic plays 2020 French Open champion Iga Swiatek.
Partly sunny. High of 84 degrees Fahrenheit. (29 Celsius).