Spain’s Rafael Nadal in action against Russia’s Mikhail Youzhny in their first round match for the Australian Open tennis tournament at Melbourne Park in Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament runs from 19 January to 01 February 2015. EPA/JOE CASTRO AUSTRALIA AND NEW ZEALAND OUT

Switzerland’s Roger Federer plays a shot against Taipei’s Yen-Hsun Lu in their first round match at Rod Laver Arena during the Australian Open at Melbourne Park, Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament runs from 19 January to 01 February 2015. EPA/JOE CASTRO AUSTRALIA AND NEW ZEALAND OUT

Spains Rafael Nadal plays Russia’s Mikhail Youzhny in their first round match at Rod Laver Arena during the Australian Open at Melbourne Park, Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament runs from 19 January to 01 February 2015. EPA/JOE CASTRO AUSTRALIA AND NEW ZEALAND OUT

Roger Federer of Switzerland in action against Lu Yen-hsun of Taiwan during their first round match at the Australian Open Grand Slam tennis tournament in Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament will go from 19 January until 01 February 2015. EPA/Barbara Walton

Spain’s Rafael Nadal celebrates his win against against Russia’s Mikhail Youzhny in their first round match for the Australian Open tennis tournament at Melbourne Park in Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament runs from 19 January to 01 February 2015. EPA/JOE CASTRO AUSTRALIA AND NEW ZEALAND OUT

Roger Federer of Switzerland in action against Lu Yen-hsun of Taiwan during their first round match at the Australian Open Grand Slam tennis tournament in Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament will go from 19 January until 01 February 2015. EPA/Barbara Walton

Rafael Nadal of Spain in action against Mikhail Youzhny of Russia during the first round of the Australian Open Grand Slam tennis tournament in Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament will go from 19 January until 01 February 2015. EPA/Filip Singer