Britain's Andy Murray wipes his face during a pause of a match with Spain's Marcel Granollers during their match at the Italian Open tennis tournament in Rome, Wednesday, May 15, 2013. Murray has retired from his second-round match with Marcel Granollers in the second round of the Italian Open. (AP Photo/Andrew Medichini)
Britain's Andy Murray wipes his face during a pause of a match with Spain's Marcel Granollers during their match at the Italian Open tennis tournament in Rome, Wednesday, May 15, 2013. Murray has retired from his second-round match with Marcel Granollers in the second round of the Italian Open. (AP Photo/Andrew Medichini)
Britain's Andy Murray wipes his face during a pause of a match with Spain's Marcel Granollers during their match at the Italian Open tennis tournament in Rome, Wednesday, May 15, 2013. Murray has retired from his second-round match with Marcel Granollers in the second round of the Italian Open. (AP Photo/Andrew Medichini)
Serbia's Novak Djokovic holds his trophy after defeating Britain's Andy Murray in the men's final at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 27, 2013. (AP Photo/Aaron Favila)
Serbia's Novak Djokovic holds his trophy after defeating Britain's Andy Murray in the men's final at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 27, 2013. (AP Photo/Aaron Favila)
Britain's Andy Murray wipes the sweat from his face during the men's final against Serbia's Novak Djokovic at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 27, 2013. (AP Photo/Aaron Favila)
Serbia's Novak Djokovic celebrates his win over Britain's Andy Murray in the men's final at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 27, 2013. (AP Photo/Dita Alangkara)
Serbia's Novak Djokovic celebrates his win over Britain's Andy Murray in the men's final at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 27, 2013. (AP Photo/Dita Alangkara)
Serbia's Novak Djokovic celebrates his win over Britain's Andy Murray in the men's final at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 27, 2013. (AP Photo/Dita Alangkara)
