Australian Open hots up – Li Na faced a battle to stay cool and to stay in the Australian Open against Lucie Safarova.
Medical treatment – Li's compatriot Zheng Jie needed medical treatment for heat stress during her 6-2 6-4 defeat by Casey Dellacqua. "I felt so hot, my mind wasn't working," said Zheng. "I was looking at the ball, but I couldn't focus on it. Then I couldn't concentrate. This weather is very difficult for me.
Sleepless nights – Serena Williams looked in complete control during her straight-sets win over Vesna Dolonc on Wednesday, but the top seed admitted to waking up in the middle of the night due to fears over dehydration.
Ice cool – Maria Sharapova wrapped ice around her neck in a bid to keep cool during her first round win over Bethanie Mattek-Sands.
It's a hot Juan – Playing early in the day on Tuesday, Argentina's Juan Martin del Potro felt the heat during his win over American Rhyne Williams.
Fainting – It all got to much for Canadian Frank Dancevic who fainted during his match with Frenchman Benoit Paire.
Keeping cool – Italy's 15th seed Fabio Fognini took an outdoor shower in a bid to stay cool.
Splish splash – Some fans also adopted the Fognini approach...
Exposed to the elements – While supporters in the Rod Laver Arena could at least take cover under its roof, fans on the outside courts were exposed to the elements.
Strike a pose – With temperatures exceeding 40 degrees Celsius at the Australian Open, sport scientist Dr. Ross Tucker suggests any player hoping to succeed Down Under should take up Bikram Yoga.
Hot shot – Men's fourth seed Andy Murray is a long-term practitioner of bikram yoga. Clearly comfortable in the heat, he's reached the final in Melbourne in three of the last four years, though the Scot has questioned if the players' health is being put at risk.
Beach party – While some chose to head to Melbourne Park, other Melbournians chose to hit St. Kilda beach.