The dominant top seed was untouchable in overpowering the Pole 6-0, 6-4 in just 64 minutes on Rod Laver Arena to set up a decider against German seventh seed Angelique Kerber or unseeded Briton Johanna Konta.
Kerber and Konta play later today, with whoever wins facing a huge obstacle to be crowned champion. Of her 25 previous major finals, Williams has won 21.

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"I'm really excited to be in another final, it kind of blows my mind right now," said Williams, 34.
"I feel I am playing the best I can, and I can't believe I am in the final,” she added.

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