Osaka, Keys overcome mid-match stumbles to fight on at US Open

U.S. Open third-seeded player Felix Auger-Aliassime suffered a surprising early exit on September 4, falling to 50th-ranked Karen Khachanov in four sets. Unable to hide his discomfort, Auger-Aliassime admitted to feeling dizzy and seeing spots throughout the match. The Canadian's performance suffered, particularly on serve, with 47 unforced errors and eight double faults compared to Khachanov's eight unforced errors and seven double faults.

Khachanov credited his win to giving his best performance and fighting throughout, while Auger-Aliassime expressed his disappointment, calling it a shocking result for the third-seeded player. This match marked the second major upset of the tournament, following Novak Djokovic's early round loss. Other notable exits included sixth-seeded Alex de Minaur, who lost to Botic van de Zandschulp, and the apparent fall of three former women's champions: Iga Swiatek, Naomi Osaka, and Coco Gauff, all of whom advanced to the third round.

Swiatek overcame Nadia Podoroska 6-3, 6-2, while Gauff triumphed over Paula Badosa 6-4, 7-6 (7/5) and Osaka beat Katerina Siniakova 6-2, 5-7, 6-1. The men's field now features world number two Alexander Zverev, who dominated Quentin Halys 6-2, 7-5, 6-2 in the night session on Arthur Ashe Stadium.