Britain's Heather Watson looked good early on, winning her first two rounds in straight sets.
Andrea Hlavackova also came out strong, upsetting No.2 seed Lucie Safarova in the second round.
Top seed Daniela Hantuchova won back-to-back three-setters in her first two rounds in Quebec.
Aleksandra Wozniak came close to beating fellow Canadian Rebecca Marino but fell, 64 46 64.
New Zealand's Marina Erakovic took out No.7 seed Irina Falconi in the second round, 63 26 62.
Tamira Paszek saved two match points in the third set to beat Varvara Lepchenko, 67(2) 63 76(4).
Tamira Paszek, the No.3 seed and defending champion, hit signed balls to fans after the win.
Andrea Hlavackova signed autographs after reaching her first WTA quarterfinal in Quebec City.
Tamira Paszek, who won the Bell Challenge last year, made an appearance at a sponsor evening.
Heather Watson was the first victim on Quarterfinal Friday, falling to Tamira Paszek, 64 76(5).
Top seed Daniela Hantuchova was the next player sent packing, falling to Marina Erakovic, 64 64.
Marina Erakovic reached her fourth WTA semifinal, her first three coming during the 2008 season.
Marina Erakovic's first three WTA semifinals came at Auckland, Memphis and Birmingham in 2008.
Tamira Paszek attended the Quebec Remparts hockey game on Friday night, dropping the first puck.
No.4 seed Rebecca Marino was stopped in the quarterfinals of her home event by Michaella Krajicek.
World No.138 Michaella Krajicek is a former Top 30 player and has three WTA titles to her name.
In the last quarterfinal match, Andrea Hlavackova's run ended against Barbora Zahlavova Strycova.
No.6 seed Barbora Zahlavova Strycova reached the semifinals by beating Andrea Hlavackova, 63 75.
Marina Erakovic scored a come-from-behind 26 75 64 win over Tamira Paszek in the first semifinal.
Michaella Krajicek fell to Barbora Zahlavova Strycova in Saturday's second semifinal, 64 63.