PARIS - Roger Federer knows full well, of course, that Rafael Nadal is no longer around this year to befuddle him, to beat him, to stand between him and a French Open title.
Federer insists he is not thinking about that, not thinking ahead. Still, Federer surely did play as if preoccupied for the better part of two hours Monday, dropping the first two sets of his fourth-round match against 63rd-ranked Tommy Haas of Germany.
One point from letting Haas serve for the victory, Federer conjured up one particularly spectacular forehand that managed to change the entire flow of things. That shot spurred a run of nine consecutive games for Federer, sending him to a 6-7 (4), 5-7, 6-4, 6-0, 6-2 victory over Haas and a berth in the quarterfinals at Roland Garros.
"I knew I was going to look back on that shot. That saved me," Federer said. "I was in quite some danger."
Roger Federer of Switzerland reacts during his match against Tommy Haas of Germany at the French Open tennis tournament at Roland Garros in Paris June 1, 2009. [Agencies]
But he escaped. With two more victories, Federer will reach a fourth consecutive final at the French Open, the only Grand Slam championship he hasn't won. Federer lost to Nadal in each of the past three finals and in the 2005 semifinals, but the Spaniard's 31-match winning streak at the clay-court major tournament ended Sunday against Robin Soderling.
"You're aware of it," Federer said. "Definitely changes it up, if I were to make the final. But we're not there yet, so honestly it hasn't changed a whole lot for me."
Federer now tries to reach the semifinals at the 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 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 US 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.
"It wasn't easy at the end," said Cirstea, two points from defeat when Jankovic served for the match at 5-4, 30-love in the third set. "I saw she was tired, also. So I knew it was also a little bit mental: Who is going to stay stronger?"
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."
No one knows that better than Federer, whose 13 major championships are one shy of Pete Sampras' record. With Nadal, Roddick and No. 4 Novak Djokovic all gone, Federer is the only man left with a Grand Slam title.
"For a lot of players," Federer said, "I think it must be quite a big opportunity, and their heads must be spinning right now."
The other matchup on his half of the draw is No. 5 Juan Martin del Potro of Argentina against No. 16 Tommy Robredo of Spain - two men who are a combined 0-6 in Grand Slam quarterfinals. Del Potro beat No. 9 Jo-Wilfried Tsonga of France 6-1, 6-7 (5), 6-1, 6-4, and Robredo eliminated No. 29 Philipp Kohlschreiber of Germany 6-4, 5-7, 7-6 (4), 6-2.
"Expectations? Everyone has expectations, even myself," Robredo said.
There are two ways to look at what Nadal's loss means for Federer. A potential obstacle is out of the way. And now Federer is expected to win the title, which could be a burden.
Consider: Dating to 2005, Federer is 0-4 against Nadal at the French Open, 27-0 against everyone else.
"It kicks the door open for Roger, but suddenly: 'Yeah, step up.' Now the pressure's really on," three-time French Open champion Mats Wilander said. "The pressure before was to just give Nadal a good match. Now, it's like, 'Hey, listen, if you can't win it now, then you're definitely not considered the greatest player of all time - until you do.'"
Asked about Nadal, Federer joked: "Um, he didn't retire, right?"
"My dream scenario is to beat Rafa here in the finals," Federer continued, "but I've got to concentrate on my part of the draw and make sure I come through like today."
Good as he was at the start against Haas - Federer won the first 24 points on his serve - there were moments when his signature forehand let him down. Federer missed two in a row to fall behind in the opening tiebreaker.
When Haas took the second set, too, the prospect of the No. 2-seeded Federer following No. 1 Nadal on the way out was a distinct possibility. Then came the third-set point both Federer and Haas considered pivotal: With Federer serving at 3-4, 30-40 - five points from losing - he ran around his backhand side for an inside-out forehand winner that landed right near a line.
"We both knew there was a chance for me to finish him off," Haas said. "Just got to tip your hat and say, 'That's why he's Roger Federer.'"