Steffi Graf turned her fourth-round match at the Australian Open into a day at the beach, slipping away in a swimsuit after reaching the quarterfinals, while Zina Garrison stormed off.

Graf, the three-time defending champion and top seed, yawned through a 37-minute, 6-0, 6-1 victory Sunday over Karina Habsudova, then dashed off for an afternoon at the shore."I enjoy these matches," said Graf, who has lost only 11 games so far in the tournament. "Sometimes I'd ask for more competition, but it's a chance to go there and enjoy and not worry about too much."

Sixth-seeded Arantxa Sanchez Vicario also had an easy time, beating No. 13 Amy Frazier 6-3, 6-2.

Garrison, the No. 8 seed, left in disgust after losing a grudge match 7-6 (7-1), 6-4 to No. 10 Jana Novotna, who teamed with Gigi Fernandez to beat Garrison and Pam Shriver in doubles Saturday.

Garrison was still fuming Sunday over a scoring mistake by the umpire in the doubles match, which gave the top-seeded Novotna and Fernandez a 5-2 lead in the first set of a 6-3, 3-6, 6-1 victory.

The umpire called 40-30 instead of 30-40 on Fernandez's serve, and when Garrison missed the next return the game ended instead of going to deuce. During the changeover, the crowd yelled about the mistake, but after a long talk among the players and umpire, the score stood.

"I said let's go over the points, and they said, `No, just go with whatever the umpire says,"' Garrison said. "I thought that was a very lame excuse.

"More than anything I have always looked at myself as a very good sportsman, on and off the court. For someone to just outright take the points that we won, it is real hard for me to believe that someone would actually do that. I learned a lesson that it is a dog-eat-dog world and you have to look at it that way."

The day before, Stefan Edberg and Pat Cash put on a blazing show of hyper-speed tennis - rat-a-tat volleys too quick to count - to close a week of memorable matches and wrenched emotions.

Edberg aged a year on court, squirming out of every tough situation by taking the big points in a nearly three-hour match, as he won 7-6 (8-6), 7-5, 6-2 with nine minutes left on his 25th birthday Saturday night.

Cash, fully recovered from the torn Achilles tendon that threatened his career two years ago, played with the quickness and acrobatic skill he displayed when he won Wimbledon in 1987.

This was a charged-up, X-rated match - Cash picked up a code violation for an audible obscenity - that pitted two serve-and-volley specialists in top form in front of a packed, roaring crowd of Aussies and Swedes.