Guests piled ​into Flushing Meadows under sunny skies, with temperatures hovering around 23 degrees, as the tournament entered its second year in a 15-day format, with the first round played over three days.

Gauff was filmed smashing a racket after losing to Elina Svitolina in a clip that was widely broadcast.

Rybakina defeated Swiatek 7-5 6-1 and will face Jessica Pegula, who was a 6-2 7-6 (1) winner over Amanda Anisimova.

Pegula defeated close friend and podcast co-host Keys 6-3 6-4 to reach the quarter-finals.

The two-time former champion had been due to face Australian Maddison Inglis in the third round.