Chiefs plan for four scenarios.
800 players identified as needing help.
The weather in Melbourne keeps getting weirder.
'An air quality policy' needed, says expert.
'We have to rely on the experts,' says Tiley.
Players severely struggling under Melbourne smoke.
Bosnich wants sport put on hold.
It got heated in Melbourne...
"My body is close to perfection right now."
Johanna Konta offered some welcome relief to British tennis fans as she progressed to round two in Melbourne.