BERLIN -- Martina Hingis routed French Open winner Iva Majoli in just 49 minutes Thursday at the German Open, beating the player who spoiled her bid for a Grand Slam sweep last year.

Hingis, the top seed, swept to a 6-1, 6-2 win against the Croatian in a rematch of last year's French Open final won by Majoli.

"You really

Anna Kournikova celebrates after beating Arantxa Sanchez Vicario on Thursday to advance to the German Open quarterfinals. (AP)

can't speak of revenge, because she isn't playing well," Hingis said. "But it was a good day, I just was in a really good mood."

HINGIS, THE WORLD'S TOP-RANKED player, moved into the quarterfinals of the $926,000 event, on a day when upsets claimed three other top five players.

Lindsay Davenport, the No. 2, again had trouble adjusting her power game to to clay. French qualifier Amelie Mauresmo ousted the American 6-2, 6-4. No. 4 Amanda Coetzer of South Africa, and No. 5 Arantxa Sanchez Vicario of Spain also were beaten.

"I just don't feel confident on clay," Davenport said. "I was just real flat today and missing everything."

Hingis is on a roll, two weeks before the French Open.

In the past two weeks, she has captured the Hamburg and Rome events on clay, establishing herself as the favorite to win the only Grand Slam event that eluded her last year.

"HOPEFULLY, NO ONE CAN beat me there," Hingis said. "But if I have a rival, it's probably Venus Williams. We're 2-2 in career meetings. From what she's achieved this year, she could be the No. 2."

Hingis beat Williams, the world's seventh-ranked player, in Sunday's final at Rome.

Spain's Conchita Martinez, the ninth seed, also advanced Thursday with a 4-6, 7-5, 6-2 win over France's Sandrine Testud.

Russia's Anna Kournikova set up a quarterfinal meeting against Hingis by beating Sanchez-Vicario, 6-4, 6-2.

Kournikova, the 16-year-old who has climbed to 16th in the world ranking, upset the former world No. 1 last year in three sets at the German Open to claim her first win over a Top 10 player.

THIS TIME THE MATCH WASN'T as close, as Kournikova jumped to early leads in both sets. Sanchez Vicario's attempts to slow the pace with soft shots against the hard-hitting Russian only occasionally succeeded.

"I mixed it up and it worked - then she hit the ball even harder and they landed very close to the back line," Sanchez Vicario said. "She just had the best shots."

Japan's Ai Sugiyama, enjoying her best year with two titles, outfought Coetzer, 4-6, 6-2, 6-3.

After Hingis swept the first set against Majoli, the Croatian's last hopes of climbing back into the match disappeared when her serve was broken while she led 2-1 in the second.

Hingis is seeking her third title in as many weeks while Majoli has failed to win since the French Open. She fell out of the top 10 two weeks ago.

Romania's Irina Spirlea, the eighth seed, also advanced when Corina Morariu of the United States had to withdraw because of an arm injury.