Britain's Johanna Konta was knocked out of the Australian Open in a second-round match against Garbine Muguruza which finished at 3:12am local time.
Konta, 27, lost 6-4 6-7 (3-7) 7-5 in Melbourne in one of the latest finishes in the tournament's history.
Spaniard Muguruza, 25, nicked a tight final set in front of about 250 remaining fans on Margaret Court Arena.
"I can't believe there are people watching us at 3:15am," the two-time Grand Slam champion said.
The 18th seed took her first match point to win in two hours 42 minutes.
"It was very tough.