Images from Thursday's play at the Australian Open
Juan Martin del Potro of Argentina reacts during his second round match against Roberto Bautista Agut of Spain at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Andrew Brownbill/The Associated Press
Andy Murray of Britain signs autographs after his men's singles match against Vincent Millot of France at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.DAVID GRAY/Reuters
Jelena Jankovic of Serbia serves to Ayumi Morita of Japan during their second round match against at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Aijaz Rahi/The Associated Press
Victor Hanescu of Romania makes a return to Milos Raonic of Canada during their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Aijaz Rahi/The Associated Press
Roberto Bautista Agut of Spain uses an ice packed towel during his men's singles match against Juan Martin Del Potro of Argentina at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.JASON REED/Reuters
Jelena Jankovic of Serbia serves to Ayumi Morita of Japan during her women's singles match at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.BRANDON MALONE/Reuters
Kurumi Nara of Japan hits a return to Magdalena Rybarikova of Slovakia during their women's singles match at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.BOBBY YIP/Reuters
Magdalena Rybarikova of Slovakia serves to Kurumi Nara of Japan during their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Shuji Kajiyama Shuji/The Associated Press
Andy Murray of Britain uses an ice-packed towel during his men's singles match against Vincent Millot of France at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.DAVID GRAY/Reuters
Roberto Bautista Agut of Spain serves to Juan Martin Del Potro of Argentina during their men's singles match at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.JASON REED/Reuters
The lightning is seen in the sky at an outside court at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Shuji Kajiyama/The Associated Press
Gael Monfils of France hits a return to Jack Sock of the United States during their men' singles match at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.PETAR KUJUNDZIC/Reuters
Victoria Azarenka of Belarus hits a return to Barbora Zahlavova Strycova of the Czech Republic during their women's singles match at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.JASON REED/Reuters
Ball boys dry the surface of an outside court after rain delayed play late in the day at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Aijaz Rahi/The Associated Press
Sloane Stephens of the U.S. signs autographs after winning her second round match against Ajla Tomljanovic of Croatia at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Eugene Hoshiko/The Associated Press
Ajla Tomljanovic of Croatia reacts after winning a point against Sloane Stephens of the U.S. during their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014Eugene Hoshiko/The Associated Press
Milos Raonic of Canada makes a backhand return to Victor Hanescu of Romania during their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Aijaz Rahi/The Associated Press
Roger Federer of Switzerland hits a return to Blaz Kavcic of Slovenia during their men's singles match at the Australian Open 2014 tennis tournament in Melbourne January 16, 2014.PETAR KUJUNDZIC/Reuters
Rafael Nadal of Spain hits the ball out of the court after defeating Thanasi Kokkinakis of Australia in their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.Aaron Favila/The Associated Press