Britain's Johanna Konta will have to cope with soaring temperatures and an unfamiliar opponent in the second round of the Australian Open on Thursday.
The ninth seed will play USA's Bernarda Pera for the first time in the opening match on court two at 00:00 GMT.
The temperature is forecast to hit 39C at Melbourne Park on Thursday.
Maria Sharapova and Novak Djokovic also feature in the day session, with Roger Federer playing Jan-Lennard Struff in the night session at around 10:00.
Konto, 26, will have to deal with testing conditions as her match is scheduled to get under way at 11:00 local time.