Eugenie Bouchard has won the opening set of her Wimbledon semifinal against Romania's Simona Halep as she tries to become the first Canadian singles tennis player to reach a Grand Slam final.

Bouchard, the No. 13 seed from the Montreal area, won the first-set tiebreak 7-5 against the third-seeded Halep at the All England Club.

Halep's left ankle appeared to roll as she chased down a ball on the final point of the fourth game. She took a medical timeout while a trainer wrapped the ankle, but the injury didn't seem to affect her once play resumed.

The winner will face Petra Kvitova in the final. The sixth-seeded Czech defeated No. 23 Lucie Safarova in the other semifinal earlier.

Kvitova, a powerful lefty, won Wimbledon in 2011.

Bouchard is appearing in her third consecutive Grand Slam semifinal. She lost in the final four of the Australian and French Opens earlier this season.

On Friday, Canadian Milos Raonic faces seven-time Wimbledon champion Roger Federer in the men's semifinals.

Raonic and Bouchard are the first Canadian singles players in the Open era to reach the Wimbledon semis.