Swiss Federer dug himself out of deep trouble against Czech Tomas Berdych, prevailing 4-6 6-7 6-4 6-4 6-2 to keep alive his hopes of a record-equalling 14th grand slam crown. [break]
"I fought as hard as I could, tried to weather the storm... he pushed me to the limit," the second seed smiled courtside afterwards.
"I enjoy those kind of fights because they don´t happen very often. I am still in great shape, feel like I could play another couple of sets so that´s a good sign."
There were no good signs for Jankovic who was blown off court by French typhoon Marion Bartoli 6-1 6-4.
"When I´m on the top of my game it´s very hard to beat me, because you really have to kind of spill blood if you want to win the match," Jankovic mused afterwards.
"But at the moment, I´m not there yet. I still need to get better, to improve, be much, much tougher out there. Nobody likes to lose. Today was a tough day for me."
TOUGH DAY
Jankovic´s tough day was a joyous one for Bartoli.
"I knew I could beat Jelena on a good day, it was just a matter of executing," she told reporters.
Bartoli next plays Vera Zvonareva after the seventh seed beat her 10th-seeded fellow Russian Nadia Petrova 7-5 6-4.
Bartoli´s Gallic good fortune almost continued on centre court when France´s Alize Cornet was poised for victory over third seeded Russian Dinara Safina, but Cornet melted in the sun.
She twice failed to serve out the match and squandered two match points in the 10th game as Safina turned up the heat to snatch victory.
Safina, whose brother Marat Safin saved a match point in the semi-finals against Roger Federer before winning the Australian Open men´s singles title in 2005, will play either Jelena Dokic or Alisa Kleybanova in the quarter-finals on Tuesday.
"Maybe she was just not ready to win this match, because she had it all in the hands," Safina said when asked if it had been her experience which had seen her safely through.
"I´m just a little bit disappointed about this match, you know. Playing against this girl and allowing myself to do these kind of mistakes.
"I played like a junior today, it´s just lucky that I went through.
"SMACK ME"
"The game is there. I just don´t know what´s going on through my mind. Somebody (should) smack me so hard in my head that something shakes finally and I put the cables together."
Men´s seventh seed Andy Roddick needs nobody to knock sense into him, the American was in superb form beating Tommy Robredo 7-5 6-1 6-3.
Roddick, who has only conceded one set to Robredo in their 10 meetings, overwhelmed him again and his quarter-final opponent on Tuesday will be either defending champion Novak Djokovic or 2006 runner-up Marcos Baghdatis, who play later on Sunday.
Eighth seed Juan Martin del Potro clinched the first of the men´s quarter-final spots with a 5-7 6-4 6-4 6-2 victory over Croatia´s Marin Cilic.
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