Second-seeded Jelena Jankovic and No. 4 Svetlana Kuznetsova were ousted in the fourth round Monday, leaving Wimbledon without any of the top four women in the quarterfinals for the first time.

A hobbled Jankovic fell 6-3, 6-2 to Tamarine Tanasugarn, while 2004 U.S. Open champion Kuznetsova lost 6-4, 1-6, 7-5 to 19-year-old Agnieszka Radwanska of Poland.

With top-seeded Ana Ivanovic and No. 3 Maria Sharapova eliminated last week, none of the top four women reached the quarterfinals — the first time that's happened at Wimbledon and also the first time at any Grand Slam tournament in the 40-year history of the Open era.

The highest seeded player left is No. 5 Elena Dementieva, who cruised to a 6-2, 6-1 win over Shahar Peer.

The Williams sisters, meanwhile, moved closer to another Wimbledon final with back-to-back victories on Court 2 — nicknamed the "Graveyard of Champions" for its history of upsets. They questioned why they weren't put on Centre Court or Court 1.

Defending champion Venus Williams beat Russian teenager Alisa Kleybanova 6-3, 6-4, while two-time winner Serena downed Bethanie Mattek — the only other American left in the men's or women's draw — 6-3, 6-3.

"It wasn't what I would have liked to see," Serena Williams said of the Court 2 scheduling. "Initially, I thought, 'Is this the right schedule?' I thought maybe there was a mistake. But I can't dwell on that. I just have to focus on doing the best that I can whether I'm on Court 2 or Court 20."

In men's play, five-time champion Roger Federer swept Lleyton Hewitt — the last man to win the title before him — 7-6 (7), 6-2, 6-4 on Centre Court to extend his winning streak on grass to 63 matches and 38 in a row at the All England Club. Federer, who served 21 aces, has now beaten his Australian rival in 12 consecutive matches.

Federer will next face the last player to beat him on grass and at Wimbledon — Croatian Mario Ancic, who won in the first round in 2002. Ancic came from two sets down Monday to beat Fernando Verdasco 3-6, 4-6, 6-3, 6-4, 13-11. The final set alone lasted 1 hour, 35 minutes.

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