Australia Open introduces extreme heat policy ahead of scorching summer

'heat stress scale' to replace maligned wet bulb globe heat-related breaks to be introduced for men's games Extreme heat is likely to remain a source of discontent at the Australian Open despite tournament organisers introducing changes aimed at improving conditions for players. Related: Johanna Konta: 'I basically just ran out of steam this year' Related: Australian Open announces switch to final-set tie-breaks for 2019 tournament