Wimbledon champion Andy Murray faces his first match of the Australian Open with day-time temperatures of 43C expected.
The Scot's match against Japan's Go Soeda is likely to take place in the slightly cooler early evening in Australia - 06:00 GMT.
BBC Scotland's Kheredine Idessane reports from Melbourne Park.
AUSTRALIAN OPEN: ANDY MURRAY V GO SOEDA
Venue: Melbourne Park Dates: Tuesday, 14 January Starts: Not before 06:00 GMT
Coverage: Live commentary on BBC Radio 5 live sports extra, BBC Sport website, mobiles and BBC Sport app; live text commentary online