MELBOURNE, AUSTRALIA, JAN. 16 (WEDNESDAY) -- Steffi Graf and Monica Seles offered no mercy to overmatched opponents, and Brad Gilbert and Scott Davis won matches that brought added tension to the early rounds of the Australian Open.

Graf reached the third round with a 6-1, 6-0 romp Wednesday over Maya Kidowaki, one of several young Japanese women joinning international competition.

Graf won the last 10 games, dropping only 10 points in the second set of the 51-minute windblown match. "If they go that well, I'm not really unhappy about it," said Graf, three-time defending champion. "It doesn't happen too often. In the later rounds it doesn't happen at all."

In the men's draw, Davis exchanged hot words Wednesday with Alex Antonitsch after his four-set victory, while Gilbert extended a cool handshake to a bitter foe after going to 5-0 against David Wheaton with a four-set victory Tuesday.

In 37 minutes of target practice Tuesday, Seles, the women's No. 2 seed, riddled Sabine Hack, 6-0, 6-0, then almost apologized. "It's tough losing love and love but I just can't give a player a game. I just really have to go for it," said Seles.

In other late matches Tuesday, No. 3 Ivan Lendl beat Tarik Benhabiles of France, 6-1, 6-1, 6-3; No. 5 Goran Ivanisevic of Yugoslavia beat Spain's Sergei Bruguera, 6-4, 0-6, 6-1, 6-4, and Australia's Mark Woodforde upset No. 6 Emilio Sanchez of Spain, 0-6, 7-5, 7-6 (7-5), 6-2.

In women's matches, No. 3 Mary Joe Fernandez defeated Britain's Sara Gomer, 6-1, 6-0; No. 6 Arantxa Sanchez Vicario of Spain beat Natalia Medvedeva of the Soviet Union, 6-0, 6-2, and No. 7 Manuela Maleeva-Fragniere of Switzerland beat Joanne Faull of Australia, 6-2, 6-0.

Seles, 17, played and spoke with renewed vigor after a week off to recover from "physical and mental exhaustion." She said she gladly paid a $10,000 fine to pull out of a tuneup event in Sydney. "I was trying to forget {tennis} for a while," Seles said. "I was too tired. I got my motivation back" from watching her idol, Janet Evans, capture gold in the World Swimming Championships.

Antonitsch, beaten 3-6, 6-2, 6-4, 6-3 by Davis and annoyed by courtside comments from Davis's doubles partner, David Pate, erupted when Davis turned away during the traditional postmatch handshake.

"America should send guys like you to Iraq," Antonitsch growled.

"Austria is not even man enough to send anyone there," Davis shot back.

Antonitsch then challenged Davis, saying, "I'll see you outside."

ATP official Weller Evans followed the pair into the locker room, and told them to "cool it." They departed with no further incident.

A chilly atmosphere pervaded the match between No. 7 seed Gilbert and fellow American Wheaton. It was a carryover from in a five-set semifinal at the $6 million Grand Slam Cup in Germany last month. Gilbert got into a shouting match with Wheaton's brother and agent, John, then with Wheaton, and wound up charging Wheaton and pushing him. Wheaton shoved back. Each was fined $5,000.

This time there was muted hostility punctuated by frequent complaints by each about line calls.

Gilbert, 29, muttered, shook his head and limped around the court as he always does. Wheaton quietly fumed over the histrionics. After 3 hours 25 minutes, Gilbert won, 6-4, 4-6, 6-3, 7-6 (7-5). He blunted Wheaton's power with a soft touch on returns, and won the big points, including the final three in the fourth-set tiebreaker.

As they left the court, Gilbert offered his hand but never looked at Wheaton as they shook briefly.

"It was a helluva first-round match," said Gilbert, with 21 aces to Wheaton's 16. "I went out and focused on winning the match."

Wheaton voiced no anger, but said: "I don't like him. He does a lot of stuff on court. He's always moaning. . . . I just try to act like he's not there."