Serena Williams has beaten Dinara Safina of Russia 6-0, 6-3 to win the Australian Open women's singles tennis title for the fourth time.
Williams took 59 minutes to win the title on Saturday night and reclaim the world number one ranking.
It was her 10th grand slam victory: three US Opens, two Wimbledons and the French Open.
She previously won in Melbourne in 2003, 2005 and 2007.
Williams is also doubles champion in Melbourne with her elder sister Venus.
Safina is the younger sister of 2005 men's champion Marat Safin.
