Melbourne, Jan 30 (DPA) Serena Williams of the United States successfully defended her Australian Open crown Saturday, defeating Belgium's Justine Henin 6-4, 3-6, 6-2 in the final.

The world number one stretched her Melbourne success run to five titles after earlier wins in 2003, 2005, 2007 and last year.

Her 11th Grand Slam singles title came a day after the 28-year-old lifted the doubles crown with her sister Venus Williams.