MONTREAL (AP) _ Andre Agassi and Pete Sampras, tuning up for the start of the U.S. Open next month, could be headed for another showdown at the Canadian Open.

The world's top two players easily advanced to the quarterfinals with victories Thursday. Agassi breezed by Czech qualifier Daniel Vacek 6-3, 6-2, and Sampras downed Mauricio Hadad of Colombia 6-2, 6-3 on the hardcourts at Jarry Stadium.

``I'd like to meet Pete in the finals because he's the guy to beat,'' said Agassi, who holds the No. 1 ranking and has reached at least the quarterfinals in 17 consecutive tournaments. ``When I do beat him, I feel it's a huge accomplishment.

``He's arguably the best player in the world. He's one guy that if I play my best tennis, I don't necessarily win.''

Each has two matches to win before Sunday's final. Agassi meets MaliVai Washington, who ousted 1994 French Open champion and No. 9 seed Sergi Bruguera of Spain 6-4, 6-2, in today's quarterfinals.

Sampras, in his first tournament since winning a third straight Wimbledon title on July 3, faces No. 7 Michael Stich of Germany. Stich downed No. 10 Jim Courier 6-3, 6-2.

``It should be a good match because we both play a similar style,'' said Sampras, whose career record against Stich is 3-3.

Agassi has gone 81-11 in matches since winning the Canadian Open in Toronto last year, including wins in the U.S. Open and Australian Open. He says this year's U.S. Open should decide whether he or Sampras gets the top ranking.

``I think the one who wins the most majors in a year is No. 1,'' Agassi said. ``If Pete wins the U.S. Open, then I'm not No. 1. The U.S. Open is pivotal. I won Australia and he won Wimbledon.''

The third and fourth seeds also advanced. No. 3 Michael Chang drubbed No. 13 Todd Martin 6-3, 6-2, and No. 4 Yevgeny Kafelnikov of Russia got by New Zealand's Brett Steven 6-4, 1-6, 6-4.

Chang, who won the Canadian Open in 1990, next faces No. 12 Thomas Enqvist of Sweden, who outlasted No. 5 Goran Ivanisevic of Croatia 6-7 (2-7), 7-6 (7-3), 7-5.

Kafelnikov next plays Mats Wilander, the former world No. 1 from Sweden who upset No. 6 seed Wayne Ferreira of South Africa 6-3, 6-2.

Greg Rusedski and Paul Wekesa of Kenya lost their second-round doubles match to Mark Philippoussis and Patrick Rafter of Australia. Rusedski, a Montreal native who recently chose to play for Britain, was jeered by the crowd when he lost in the first round of singles.