Rafter recovered from a mid-match hiccup to beat Spaniard Francisco Clavet 6-3 3-6 6-3 before Philippoussis, the 16th seed, bowed out 3-6 7-6 (7-4) 6-2 to Swede Roger Federer.

"I played well in patches," said Rafter.

"I went to sleep a little bit, but was pretty relaxed the whole match."

Federer broke Philippoussis's serve twice in the final set to set up a fourth round clash with Swede Thomas Johansson, who upset Kuerten 6-3 4-6 6-4.

"It could have gone either way," Federer said.

"I kept coming and tried my best to stay in the game. I'm happy with the way I fought today and at the end, I came up with great shots."

Hewitt plays Frenchman Fabrice Santoro for a quarter final berth tomorrow, with Rafter will take on Alex Corretja from Spain on Wednesday.

Australian Open champion Andre Agassi, leading the ATP champions race, beat an error-prone David Prinosil 6-1 6-4 but other seeds were bundled out.

Top seed Kuerten, No.16 Philippoussis, 11th seed Arnaud Clement from France and sixth-seeded Swede Magnus Norman all lost.

Kuerten lost 6-3 3-6 6-4 to Swede Thomas Johansson, Spaniard Carlos Moya beat Clement 6-4 0-6 6-4 and Croatia's Ivan Ljubicic ousted Norman 7-6 (7-5) 6-2.

Johansson, ranked No.25 in the world, used four crisp forehands to break Kuerten for the fourth time in the final game of the match, sealing the victory after two hours.

"I think the match was pretty close since the beginning, so it was tough to go for my shots as I wanted," Kuerten said.

"I could have tried to go for more winners, but also I tried sometimes and I missed. If I could get one or two points that I missed, it would be a different score."

Serving at 4-5, Kuerten picked the wrong time to come up with a loose game as Johansson delivered a forehand winner to break the French Open champion and close out the match.

"I felt really good out there," said Johansson.

"In the third set it was really, really tight and I was lucky to break the last game of his service.

"You go out there and you're just trying to have fun because he has all the pressure. On paper, he has to win."

Results went more to form among the women apart from Jelena Dokic, playing under the Yugoslav banner, scoring an upset 6-3 7-5 win over sixth-seeded South African Amanda Coetzer to move into the quarter-finals.

Venus Williams escaped with a 7-5 7-6 (7-2) win over Tathiana Garbin of Italy but her sister Serena had an easier time, thumping 11th-seeded Belgian Kim Clijsters 6-0 6-2.

Dokic plays Venus Williams in the quarter-finals.

Serena Williams will play fourth seed and local crowd favourite Jennifer Capriati, who cruised through 6-4 6-0 over Tamarine Tanasugarn of Thailand.

The other women's quarter-finals pit top seed Martina Hingis against 10th-seeded German Anke Huber and second seed Lindsay Davenport against seventh seed Elena Dementieva of Russia.