The Williams sisters will play for the final Sunday on Centre Court. They will meet fourth-seeded Julie Halard-Decugis of France and Ai Sugiyama of Japan, who defeated Lisa Raymond of the United States and Rennae Stubbs of Australia, 3-6, 7-5, 6-2. Raymond and Stubbs were seeded No. 1.
In the meantime, Venus will be in Saturday's women's singles final against Lindsay Davenport.
The sisters will be after their third Grand Slam doubles title, with previous victories last year in the U.S. Open and French.
Serena also won the 1998 Wimbledon and U.S. Open mixed doubles titles, teaming with Max Mirnyi. Venus won the Australian and French Open in the same year playing with Justin Gimelstob.
Venus Williams, Lindsay Davenport and Monica Seles are guaranteed a spot on the U.S. Olympic team. Coach Billie Jean King can select one more player, and it would be difficult to ignore Serena Williams.
"We're the best doubles team America has," Venus said. "It would be a good pick."
The sisters entered the Wimbledon doubles as a wild card and were seeded No. 8.
"I think we played better as a team together today," Serena said. "Usually when we first played doubles we were too much on our own. We learned to work it out together."
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