KEY BISCAYNE, Fla. -- Top seed Martina Hingis of Switzerland recorded her second straight dominant victory Sunday by crushing No. 21 Joannette Kruger of South Africa, 6-0, 6-0, to reach the fourth round of the $4.6 million Lipton Championships.

Hingis, who dropped just one game in her victory over Chanda Rubin Friday, capitalized on 35 unforced errors by the 23rd-ranked Kruger to cruise to victory in just 35 minutes.

Hingis, fresh

Martina Hingis wastes no time Sunday in showing why she's the No. 1 player in the world. (AP)

off winning her second title of the season last week at Indian Wells, Calif., improved to 17-2 this season. In January, she captured her fourth Grand Slam title in two years at the Australian Open. Last year, Hingis won 12 events and over $3 million.

IN OTHER WOMEN'S THIRD-ROUND action, second seed Lindsay Davenport of the United States, who lost to Hingis in the Indian Wells final, held off China's Fang Li, 3-6, 6-1, 6-3. Davenport, ranked second in the world behind Hingis, improved her hardcourt record this year to 14-4.

Also, third seed Jana Novotna of the Czech Republic edged Germany's Jana Kandarr, 6-3, 4-6, 6-3; sixth seed Amanda Coetzer of South Africa disposed of 1994 runner-up Natasha Zvereva of Belarus, 7-5, 6-3; eighth seed and two-time champion Arantxa Sanchez Vicario of Spain rolled past No. 31 Florencia Labat of Argentina, 6-0, 6-1; and ninth seed Conchita Martinez of Spain bounced No. 28 Naoko Sawamatsu of Japan, 6-2, 6-2.

In addition, American teenager Venus Williams, the 11th seed, routed Olga Barabanschikova of Belarus, 6-2, 6-1; 12th seed Nathalie Tauziat of France breezed past No. 26 Henrieta Nagyova of Slovakia, 6-1, 6-1; No. 13 Sandrine Testud of France stopped American Lori McNeil, 6-3, 6-3; and 14th-seeded Anke Huber of Germany rallied past No. 18 Sabine Appelmans of Belgium, 6-7 (4-7), 6-4, 6-4.

No. 16 Ai Sugiyama of Japan was the highest seed eliminated as 29th seed Silvia Farina of Italy prevailed, 6-3, 7-5.

ALSO, NO. 17 PATTY SCHNYDER of Switzerland rolled past Tamarine Tanasugarn of Thailand, 6-0, 6-2; Venus Williams' younger sister, Serena, upended 24th seed Barbara Paulus of Germany, 6-3, 6-2; No. 25 Yayuk Basuki of Indonesia was ousted by Rita Grande of Italy, 6-4, 3-6, 6-4; and No. 30 Maria Alejandra Vento of Venezuela got past Russia's Elena Likhovtseva, 7-5, 5-7, 6-3.

Fifth seed and two-time champion Monica Seles was scheduled to play 16-year-old rising star Anna Kournikova of Russia, the 23rd seed, for the first time in Sunday's featured night match. But the match was postponed until Monday because of rain.

Seles survived a scare in her 1998 debut Friday, holding off Spain's Maria Antonia Sanchez Lorenzo, 6-4, 6-7 (2-7), 6-3, Saturday.

Seles, who lives in Florida, had been spending time with her ailing father, Karolj, who has cancer. She won here in 1990 and 1991 and lost to Hingis in last year's final.