PARIS - When Roger Federer finally emerged from that red-clay hole he dug yesterday, he celebrated with a leap that sent him into the French Open quarterfinals and joined the roaring crowd with a scream of his own.

Less than 24 hours after Rafael Nadal was eliminated, Federer averted another stunner by beating Tommy Haas, 6-7 (4), 5-7, 6-4, 6-0, 6-2.

The French Open is the only Grand Slam event Federer has yet to win. He has been beaten by Nadal at Roland Garros four years in a row, the last three times in the final. And with the path to the title cleared of his No. 1-ranked nemesis, No. 2 Federer barely avoided a stumble.

"It's maybe a good sign," Federer said. "It was a great battle for me, and I'm thrilled to be through and given another chance here."

Federer is trying to become only the sixth man to win all four major championships.

"If he wins here, he's probably the greatest ever," Haas said.

Federer's total of 13 Grand Slam titles is one shy of Pete Sampras' record, and he's well aware of the opportunity created by Nadal's departure.

"It caused a bit of a shock in the locker room," Federer said. "All the players are a bit relieved. Everybody suddenly sees that things are much more open."

Federer now tries to reach the semifinals at a 20th Grand Slam event in a row, which would extend his own record, when he meets 11th-seeded Gael Monfils of France, a 6-4, 6-2, 6-3 winner over No. 6 Andy Roddick, the last American man in the tournament.

Federer is 4-0 against Monfils, including a victory in the French Open semifinals a year ago.

Monfils dominated Roddick, even out-acing him by 17-4, and Roddick began complaining in the second set that it was too dark to see.

"Don't tell me what's OK and what's not," the 2003 U.S. Open champion snapped at chair umpire Enric Molina. "You're not the one playing."

It was the day's last match on Court Suzanne Lenglen, and the start was delayed by No. 5 Jelena Jankovic's loss to the 41st-ranked Sorana Cirstea of Romania, 3-6, 6-0, 9-7, which lasted 2 hours, 44 minutes.

Elsewhere, 2002 champion Serena Williams beat No. 24 Aleksandra Wozniak of Canada, 6-1, 6-2; No. 7 Svetlana Kuznetsova defeated No. 12 Agnieszka Radwanska of Poland, 6-4, 1-6, 6-1; and No. 30 Samantha Stosur beat Virginie Razzano of France, 6-1, 6-2.

"This," Williams said, "is when everything counts."

Advancing in men's play were No. 5 seed Juan Martin del Potro and No. 16 Tommy Robredo.

Mixed doubles. In a second-round match, the third-seeded duo of Wayne's Lisa Raymond and Poland's Marcin Matkowski lost to Anna-Lena Groenefeld and Mark Knowles by 3-6, 7-5, 10-6 (tiebreaker).

Results

Men's singles

FOURTH ROUND

Roger Federer (2), Switzerland, def. Tommy Haas, Germany, 6-7 (4), 5-7, 6-4, 6-0, 6-2. Tommy Robredo (16), Spain, def. Philipp Kohlschreiber (29), Germany, 6-4, 5-7, 7-6 (4), 6-2. Juan Martin del Potro (5), Argentina, def. Jo-Wilfried Tsonga (9), France, 6-1, 6-7 (5), 6-1, 6-4. Gael Monfils (11), France, def. Andy Roddick (6), United States, 6-4, 6-2, 6-3.

Women's singles

FOURTH ROUND

Serena Williams (2), United States, def. Aleksandra Wozniak (24), Canada, 6-1, 6-2. Svetlana Kuznetsova (7), Russia, def. Agnieszka Radwanska (12), Poland, 6-4, 1-6, 6-1. Sorana Cirstea, Romania, def. Jelena Jankovic (5), Serbia, 3-6, 6-0, 9-7. Samantha Stosur (30), Australia, def. Virginie Razzano, France, 6-1, 6-2.

Men's doubles

QUARTERFINALS

Wesley Moodie, South Africa, and Dick Norman, Belgium, def. Jose Acasuso, Argentina, and Fernando Gonzalez, Chile, walkover. Lukas Dlouhy, Czech Republic, and Leander Paes (3), India, def. Bruno Soares, Brazil, and Kevin Ullyett (5), Zimbabwe, 6-2, 7-6 (5).

Women's doubles

QUARTERFINALS

Victoria Azarenka, Belarus, and Elena Vesnina (12), Russia, def. Yan Zi and Zheng Jie (16), China, 6-4, 4-6, 6-2. Anabel Medina Garrigues and Virginia Ruano Pascual (3), Spain, def. Anna-Lena Groenefeld, Germany, and Patty Schnyder (11), Switzerland, 7-6 (2), 6-2.

Mixed doubles

SECOND ROUND

Anna-Lena Groenefeld, Germany, and Mark Knowles, def. Lisa Raymond, United States, and Marcin Matkowski (3), Poland, 3-6, 7-5, 10-6 tiebreak.

QUARTERFINALS

Liezel Huber and Bob Bryan (1), United States, def. Ai Sugiyama, Japan, and Andre Sa (5), Brazil, 1-6, 6-4, 12-10 tiebreak. Vania King, United States, and Marcelo Melo, Brazil, def. Sybille Bammer, Austria, and Lukasz Kubot, Poland, 6-3, 7-5.