Hingis will face American Amy Frazier in a quarterfinal match for the second straight week today at the $535,000 estyle.com Classic.

Second seed Lindsay Davenport looks to move one step closer toward her first title since April when the California native faces eighth seed Sandrine Testud of France tonight.

American Lisa Raymond, the No. 1 doubles player in the world, attempts to reach her second singles semifinal of the season when she encounters Elena Dementieva of Russia.

On Wednesday night, Hingis rebounded from her loss to Frazier at last week's Acura Classic in San Diego by pulling out a three-set win over former finalist Chanda Rubin.

Hingis has won four titles this season, including the Ericsson Open on hard courts, and has reached the finals at three other hardcourt events, including the Australian Open.

Frazier, the 1994 champion, set up a quarterfinal rematch with Hingis by eliminating seventh seed Arantxa Sanchez-Vicario of Spain in three sets on Thursday. Ranked No. 20 in the world, the 27-year-old Frazier is seeking her first singles title of the season and seventh of her career.

Davenport, a two-tiime champion here, struggled past Anne-Gaelle Sidot of France in three sets to secure a semifinal berth.

Ranked No. 2 in the world behind Hingis, Davenport is seeking her third title of the season and first since early April. Both of her tournament wins have come on hard courts, including the Australian Open in January. Her most recent title came at Indian Wells in her native California.

Davenport won this event in 1996 and 1998 and was a semifinalist last year.

Testud also needed three sets to advance to the quarterfinals. She got past Dominique Van Roost on Wednesday to advance to her third consecutive quarterfinal, all in California.

Davenport is 8-2 lifetime against Testud, but three of their last four meetings have gone three sets. In their most recent encounter, Davenport prevailed in a third-set tiebreak at the Ericsson Open.

Defending champion Serena Williams, seeded fifth, advanced to the semifinals on Thursday night with a three-set win over fifth seed and former champion Conchita Martinez of Spain.

Williams, who will defend her U.S. Open title later this month, awaits the Hingis-Frazier winner in Saturday's semifinals.

First prize is $87,000.