Women's second seed Simona Halep won five straight games in the deciding set to avoid an upset at the Australian Open ©Getty Images

Picture Gallery

An emotional Nick Kyrgios collapses to the court after coming from behind to win in five sets ©Getty Images
An emotional Nick Kyrgios collapses to the court after coming from behind to win in five sets ©Getty Images
Sorana Cirstea clenches her fist after knocking out ninth seed Petra Kvitova ©Getty Images
Sorana Cirstea clenches her fist after knocking out ninth seed Petra Kvitova ©Getty Images
Men's top seed Novak Djokovic battled to a four set win over Frances Tiafoe of the United States ©Getty Images
Men's top seed Novak Djokovic battled to a four set win over Frances Tiafoe of the United States ©Getty Images
Spectators wander around the Melbourne Park grounds on another hot day at the Australian Open ©Getty Images
Spectators wander around the Melbourne Park grounds on another hot day at the Australian Open ©Getty Images
Naomi Osaka continued her smooth progress in Melbourne with a straight sets win in the second round ©Getty Images
Naomi Osaka continued her smooth progress in Melbourne with a straight sets win in the second round ©Getty Images
Hungary's Marton Fucsovics lies on the court in disbelief after an epic five-set triumph against Stan Wawrinka ©Getty Images
Hungary's Marton Fucsovics lies on the court in disbelief after an epic five-set triumph against Stan Wawrinka ©Getty Images
A feature of the night session at Melbourne Park was the presence of insects on court ©Getty Images
A feature of the night session at Melbourne Park was the presence of insects on court ©Getty Images
Italy's Sara Errani dropped just one game on her way to victory over Venus Williams, who suffered an ankle injury during the match ©Getty Images
Italy's Sara Errani dropped just one game on her way to victory over Venus Williams, who suffered an ankle injury during the match ©Getty Images
Eighth seed Diego Schwartzman breezed through to round three dropping just eight games in his win over Alexandre Muller ©Getty Images
Eighth seed Diego Schwartzman breezed through to round three dropping just eight games in his win over Alexandre Muller ©Getty Images