Britain’s Johanna Konta was knocked out of the Australian Open in a second-round match against Garbine Muguruza which finished at 03:12 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 don’t agree with athletes having to physically exert themselves in the wee hours of the morning,” Konta said.
“I don’t think it is healthy – in fact it is quite dangerous.
“However, Garbine and I were both in the same position and, with the circumstances, we really put on a great match and it’s just a shame more people couldn’t enjoy it.”
Konta’s defeat means there are no British players left in the singles in Melbourne.
She said she and Muguruza were not given the option to postpone the match until day five.
The latest finish in Australian Open history is a 2008 third-round match between Lleyton Hewitt and Marcos Baghdatis that ended at 04:34.
Two-time Grand Slam champion Muguruza took her first match point to win in two hours 42 minutes.
“I can’t believe there are people watching us at 3:15am,” the former world number one said.
“We play for you guys watching – otherwise why are we here?
“It was very tough. Johanna played very good, serving incredibly and hitting big shots. I just tried to hang in there.”
Credit: BBC Sport