American Bethanie Mattek spoiled Aleksandra Wozniak`s bid to become the first Canadian to reach the final of the WTA`s Bell Challenge Saturday and booked her own first WTA Tour final berth in the bargain.

Mattek, the sixth seed, defeated the fifth-seeded Canadian 7-6 (7/4), 6-3 to reach the final of the 175,000-dollar Tier Three event.

The American will face a tough task in Sunday`s final, taking on top-seeded Russian Nadia Petrova.

Petrova, a former world number three now ranked 11th in the world, encountered little resistance in a 6-1, 6-3 victory over US lucky loser Angela Haynes.

Petrova, 26, has gradually built up steam this season, winning her only title of the year at Cincinnati in August and reaching the final in Stuttgart earlier this month.

Mattek, 23, has a chance to add a title to what has already been her best career year, in which she has broken into the top 50 for the first time and turned in impressive semi-final runs at Birmingham and Los Angeles.

It was a disappointing end to the week for 21-year-old Wozniak, a native of Blaineville, Quebec, whose victory at Stanford earlier this year made her the first Canadian in 20 years to win a WTA title.

Haynes, ranked 189th, saw a dream run in Quebec come to an end. This week, where she entered the main draw only after Italian Flavia Pennetta pulled out, marked her first appearance in a WTA quarter-final.