QUEBEC CITY (Canada) (AFP) - Canada's Aleksandra Wozniak and Czech Lucie Safarova were straight-set winners in the second-round of WTA Bell Challenge on Thursday. Wozniak posted a 6-2, 7-5 win over Russian Regina Kulikova, while Canada's Valerie Tetreault lost 6-2, 6-2 to Safarova on the indoor hardcourts at Laval University. Last year's Quebec runner-up, Bethanie Mattek-Sands, continued her strong play at this event by ousting fellow American Vania King 6-3, 6-3. Mattek-Sands, who entered the draw as a wild card this week, gave way to this week's top seed, Russian Nadia Petrova, in last year's final. Lilia Osterloh outlasted Swiss qualifier Amra Sadikovic 6-3, 2-6, 6-2 Osterloh meets eighth-seeded German Julia Goerges in the quarterfinals.