16 January 2014 Last updated at 11:22

Extreme heat at Australian Open 'safe' says medic

Extreme heat at the Australian Open is "safe" to play tennis in, the tournament's chief medical officer has insisted.

On Thursday play was disrupted for over four hours as the temperature exceeded 40C for the third day running.

Dr Tim Wood told BBC Radio 5 live's Breakfast : "There will be some players who complain about the heat and no-one is saying it's terribly comfortable to play out there under these conditions."

"But from a medical perspective we know that man is well adapted to exercising in the heat.... whether it's humane or not is a whole different issue."