As her second-round match against Garbiñe Muguruza on a sweat-soaked Thursday afternoon dragged on, Johanna Konta caught herself glancing at the courtside clock.
“I’m like, ‘Oh, O.K.,’ ” Konta recalled thinking. “We’ve been here for a while.”
The longest women’s match in United States Open history consumed 3 hours 23 minutes on Court 17, where Konta, a 24-year-old Briton, nibbled on bananas. She recalled the teachings of Juan Coto, her mental coach. And she ultimately persevered through the conditions to oust the ninth-seeded Muguruza, 7-6 (4), 6-7 (4), 6-2.
“I left everything out there,” said Konta, ranked No.