A fifth all-Williams women's singles final at Wimbledon remains a possibility after the two siblings each progressed to the last eight on a day that saw No. 3 seed Agnieszka Radwanska dramatically beaten.
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Reigning winner Serena — a six-time champion at the All England Club — and five-time winner Venus claimed straight-sets victories in matches that were briefly interrupted, the former winning nine games in a row to beat Svetlana Kuznetsova 7-5, 6-0 on Centre Court.
There were also wins on Monday for Angelique Kerber and Simona Halep, the respective fourth and fifth seeds who will now face each other.