The excessive warmth coverage has been enacted on a scorching day two of the Australian Open, with play suspended on the skin courts at Melbourne Park.
Action was persevering with on the three principal present courts, with the roof closed on Rod Laver Arena, John Cain Arena and Margaret Court Arena.
The high-profile round-one encounter between former world No.1 Andy Murray and No.13 seed Matteo Berrettini will now begin and end beneath the roof on RLA.
The air temperature is above 35 levels in Melbourne and is ready to soar past the forecast most of 36 levels.
Play on the skin courts is not going to resume till 1600 (AEDT) on the earliest.