Feliciano Lopez of Spain reacts after a point in his first round match against Gilles Muller of Luxembourg during day one of the 2009 Australian Open at Melbourne Park on January 19, 2009

Nikolay Davydenko of Russia plays a backhand in his third round match against Juan Monaco of Argentina during day six of the 2010 Australian Open

Roger Federer of Switzerland looks on between games in his quarterfinal match against Nikolay Davydenko of Russia during day ten of the 2010 Australian Open

Kim Clijsters of Belgium plays a backhand in her second round match against Tamarine Tanasugarn of Thailand during day three of the 2010 Australian Open

Serena Williams of the United States of America reacts after a point in her second round match against Petra Kvitova of the Czech Republic during day four of the 2010 Australian Open

A ball kid looks on during the first round doubles match between Andy Ram of Israel and Max Mirnyi of Belarus and Peter Luczak and Greg Jones of Australia during day three of the 2009