page_title: 2011 Australian Open
section_title: Men's Singles
hierarchical_section_title: 2011 Australian Open / Players / Professional Players / Singles Seeds / Men's Singles
caption_attribution_description: Español: Rafael Nadal, en el torneo ATP de Tokio 2010.
context_page_description: The 2011 Australian Open was a tennis tournament featuring six different competitions, and part of the 2011 ATP World Tour, the 2011 WTA Tour, ITF Junior Tour and the NEC Tour, as tournaments for professional, junior and wheelchair players were held. The tournament took place at Melbourne Park in Melbourne, Australia from 17 to 30 January, it was the 99th edition of the Australian Open and the first Grand Slam event of 2011. The tournament was played on hard courts and was organised by the International Tennis Federation and Tennis Australia.
  Roger Federer was unsuccessful in his title defence, being defeated by Novak Djokovic in the semi-finals, and Serena Williams was unable to defend her title due to a foot injury she suffered shortly after winning Wimbledon last year. Djokovic won the Australian Open for the second time, and Kim Clijsters, the runner-up to Justine Henin-Hardenne in 2004, won her maiden Australian Open. In the men's doubles the Bryan Brothers won their fifth Australian Open while Gisela Dulko and Flavia Pennetta won their maiden Grand Slam title in the women's doubles.
caption: Rafael Nadal was the number one seed in the Men's Singles. He had an opportunity to complete all four Grand Slams at once, but lost to David Ferrer in the quarterfinals.
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