Reigning U.S. Open champion Samantha Stosur put the latest matchup in the Williams sisters' sibling rivalry on hold by rallying past Venus Williams at the Family Circle Cup.

The second-seeded Stosur won five of the last six games for a 6-3, 4-6, 6-3 victory in the quarterfinals on a chilly, windy Friday at the season's first clay-court event. Stosur now has a chance at knocking out both Williams sisters on consecutive days when she meets Serena in Saturday's semifinals.