The order of play has been released for the Australian Open, but whether world No.1 Novak Djokovic will be there to follow Ash Barty's opening match on Rod Laver Arena remains to be seen.
The schedule would normally be unveiled two days before the start of the Australian Open, but the uncertainty surrounding Djokovic's involvement in the year's first major was no doubt the reason behind the delay this year.
An order of play was released just after 4pm AEDT on Sunday, with Djokovic's round one match against fellow Serb Miomir Kecmanovic scheduled to follow world No.1 Barty's clash with Lesia Tsurenko on Monday night.
Djokovic has launched an appeal to the Federal Court to challenge immigration minister Alex Hawke's decision to cancel his visa.
A decision could be made on Sunday or as late as Monday.
If it's made on Monday, it would give Djokovic just hours to mentally and physically prepare for his round one match.
The delay in the schedule's release has meant players have been kept in the dark as to whether to prepare for a day or a night match.
World No.8 Casper Ruud wasn't too fazed by the delay.
"Usually on the ATP tour (apart from grand slams) you don't really know until the evening before," Ruud said.
"You get maybe small indications if you're the first or second seed of the tournament - you can put in the request and they can give you a little bit of notice before.
"But here it's a bit different this year. It's interesting, but we're all used to it, so it doesn't really bother me too much.
"I've been trying to practice a little bit in the morning, and a little bit in the afternoon and the evening to get a feeling of both scenarios.
"I'm prepared for both. If I have to play morning or afternoon, I've been practising well in both scenarios.
"I've been trying to mix up the days a little bit, some later sessions and some earlier."
Ruud says players are just as interested as everyone else to learn what the final decision on Djokovic will be.
"I think we're all in a way excited to see what happens," he said.
"We're waiting patiently to see what happens. It's impossible to know. It's way out of my league to know what's going to happen.
"At this point it's so political, so I have no intention of making any political opinions."
Women's defending champion Naomi Osaka will play unseeded Colombian Camila Osorio in the second match of the day session at Rod Laver Arena, before former men's champion Rafa Nadal plays American Marcos Giron.
