The 2026 US Open tennis tournament was the fourth and final Grand Slam of the year.
The annual Grand Slam calendar traditionally begins with the Australian Open in January. The French Open follows in late spring, Wimbledon takes place during the summer, and the US Open concludes the sequence in late August and September.
This order is based on the tournament calendar rather than the surface. The Australian Open and US Open are played on hard courts, the French Open on clay, and Wimbledon on grass. The US Open therefore closes the major championship season while remaining one of two hard-court Grand Slams.
Because it is the final major, the US Open often determines season-ending storylines, including Grand Slam totals, rankings and qualification for the ATP and WTA Finals. The 2026 tournament followed the same traditional calendar position.