The 2005 Australian Open was a Grand Slam tennis tournament held in Melbourne, Australia from 17 until 30 January 2005.Roger Federer was unsuccessful in defending his 2004 title, being defeated in the semi-finals by eventual champion Marat Safin in a rematch of the 2004 final. Safin defeated third-seed Lleyton Hewitt in the final in four sets. Justine Henin-Hardenne could not defend her 2004 title due to an injury suffered in the second half of 2004.