Children cool off in a fountain in Garden Square as temperatures are expected to top 44 C (112 F) during second round matches at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014. (AP Photo/Mark Baker)
Marina Erakovic of New Zealand takes a drink during a break in her second round match against Zarina Diyas of Kazakhstan at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014. (AP Photo/Mark Baker)
A spectator watches second round matches at the Australian Open tennis championship as temperatures are expected to top 44 C (112 F) in Melbourne, Australia, Thursday, Jan. 16, 2014. (AP Photo/Mark Baker)