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. Serena Williams, the champion in 2003, defeated Lindsay Davenport in the women's final.