MELBOURNE, Australia — Six-time champion Serena Williams has beaten Agnieszka Radwanska 6-0, 6-4 to advance to her seventh Australian Open final.

With the roof closed on Rod Laver Arena because of rain showers in the area, Williams broke Radwanska’s service to open the match and was rarely troubled in the 21-minute first set.

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The No. 4-ranked Radwanska broke Williams’ serve to level the second set at 3-3, but Williams broke Radwanska’s serve in the ninth game and closed with three aces and a forehand winner to win the match in 1 hour, 4 minutes.

Britain’s Johanna Konta plays Angelique Kerber in the second semifinal, with the winner facing Williams in Saturday night’s championship match.