``I played well today, guys,'' Williams said after her 6-0, 6-1 quarterfinal victory over the 16th-seeded Frazier at the du Maurier Open. ``Remember this date because I'll probably never say this again -- I'm satisfied with how I played.

``I didn't make many errors. I didn't hit too hard, too crazy. Whatever she did, I was ready for it. It all came together today.''

Williams could recall only twice before being as sharp -- for one set of a match against her older sister Venus at Munich, Germany, last year and again in Miami against what she called ``some player.''

This match was even easier than her two-set third-round win over Anna Kournikova on Thursday, which she had described as ``slightly close.'' And it seems that when Williams is hot, there's little her opponent can do.

``If I didn't hit a perfect shot, she'd hit a winner,'' said Frazier, who nonetheless was hesitant, as many at du Maurier Stadium have, to concede the tournament to Williams.

``All the top players are powerful, quick and strong,'' Frazier said.

Top players are all that's left at the $1.08 million event.

Joining Williams in the semifinals were top-seeded Martina Hingis and No. 3 Conchita Martinez.

Hingis survived a 6-4, 4-6, 6-3 battle with No. 8 Sandrine Testud, while Martinez advanced by beating Anne Kremer of Luxembourg 6-2, 6-4.

Hingis is now 11-0 in her career against Testud, including a trio of three-set wins at the du Maurier.

``I've always had that little edge over her,'' Hingis said. ``The physique was also a factor in the third set, because she came out strong in the first set but then the match slowed down.''

Hingis has an 8-3 record against Martinez, but lost in their last meeting at this year's German Open.

Martinez crept almost unnoticed into the semifinals.

She had a first-round bye, got past Anne Miller in three sets in the second round and won a third-round walkover Thursday when Julie Halard-Decugis withdrew with a lower back injury.

``A dream? No,'' said Martinez, 28, who has climbed back to sixth in world rankings after two weak seasons. ``It's pretty real.

``It was weird not playing in the third round because Julie got injured, but I'm playing good tennis. I thought I played a good match.''

Second-seeded Lindsay Davenport, who retired Thursday from her third-round singles match with a left foot injury, withdrew from doubles on Friday.

Davenport and Kournikova were to have met the top-seeded pair of Halard-Decugis and Ai Sugiyama in the quarterfinals. With Davenport's withdrawal, Halard-Decugis' team advanced to the semifinals in doubles, giving the Frenchwoman an extra day's rest.

For the second straight day, Williams delighted the crowd by doing her post-match on-court interviews in French.

When reporters asked about the warm reception her remarks received, she said: ``I don't think anyone expected me to speak French,'' she said. ``I'm American. No American has ever learned another language.''

Her victory extended the Williams family streak to 28 consecutive wins against all opponents except one another. Between them, Serena and Venus have won four straight tournaments, beginning with Wimbledon. Venus sat out the du Maurier.