Serena Williams beats Caroline Wozniacki in Montreal . Jo-Wilfried Tsonga comes from a set and break down to win three -setter . Faces sister Venus for a place in the final . Serena Williams maintained her dominance of Denmark 's former world number one Caroline Wozniacki with a typical fightback in the quarterfinals of the Rogers Cup in Montreal . Serena Williams extends fine run at Montreal Masters three event .
Serena Williams beats Caroline Wozniacki in Montreal . Jo-Wilfried Tsonga comes from a set and break down to win three -setter . Faces sister Venus for a place in the final . Serena Williams extends fine run at Montreal Masters three event .