A former world number one and two grand slam champions enjoyed routine quarter-final victories as they remained on course to claim a belated maiden women's tennis title of 2012 at a rain-hit Montreal Cup.
Denmark's Caroline Wozniacki, last year's French Open champion Li Na and 2011 Wimbledon winner Petra Kvitova ended a marathon day of tennis by easing into the semi-finals of the tournament in convincing fashion.
They were joined by 16th seeded Czech Lucie Safarova, who will face Li in the first semi-final tomorrow, before Wozniacki and Kvitova face each other for the first time since last November's WTA Championships.
The final will be played on Tuesday.
