MELBOURNE, Australia(AP) Serena Williams started the defense of her Australian Open title with a dominating 6-2, 6-1 win Tuesday over Polish teenager Urszula Radwanska.

Williams also only lost three games in her previous match at Melbourne Park: a 6-0, 6-3 win over now No. 2-ranked Dinara Safina in last year's final.

Despite having her right thigh heavily wrapped with a white bandage, Williams didn't show any signs of restricted movement.

The 28-year-old American hurt her left knee at the Sydney International last Friday night and later said she has been bothered by a foot problem.

Williams broke Radwanska in the opening game to set the tone.