WASHINGTON, March 28 (Xinhua) -- Five-time champion Serena Williams has advanced to Sony Open final by defeating Agnieszka Radwanska 6-0, 6-3.

Williams, ranked No. 1, will play four-time runner-up Maria Sharapova for the title Saturday.

Williams had struggled in her previous two matches but played almost error-free tennis in the semifinal, using her superior power to keep Radwanska on the run. They played for 37 minutes and 55 points before Radwanska won a game.

Radwanska, who also lost to Williams in last year's Wimbledon final, fell to 1-11 against No. 1 players.