Murray withdraws from Rogers Cup with knee injury

TORONTO — Andy Murray withdrew from the Rogers Cup because of a knee injury Thursday, the latest top player to pull out of the rain-delayed tournament.

The Olympic gold medalist hurt his left knee Wednesday night during the opening match against Flavio Cipolla. Murray had been scheduled to face Canadian Milos Raonic in the third round Thursday in the event where all singles play was wiped out by rain.

"Normally when I move on to hard courts, I have 10 days or so practicing and you feel things like this, but you can work around it by doing the right training and what not," Murray said. "I don't want to go full out and possibly do any more damage. That was why I decided not to play."

Murray, ranked fourth in the world, said he's unsure whether he can play in Cincinnati next week or what his status is for the U.S. Open.

"Over the next few days we'll come up with a plan and strategy to either get myself ready for Cincinnati, or if not, then plan for the best way to prepare for the U.S. Open," Murray said. "But today I won't think about any strategies or whatever. It'll just be about what's the next move and where do we go from here."

Roger Federer and Rafael Nadal withdrew before the tournament began.

Raonic reached the quarterfinals for the first time in a Masters tournament.

"It's something that I was really looking forward to," Raonic said about playing Murray. "It's an unpleasant thing, but at the same time it's a good thing — it's my first quarterfinal in a Masters and to be at home is pretty special."

Top-seeded Novak Djokovic was set to play Sam Querrey on Thursday, but no play was possible.

In the women's event at Montreal, Roberta Vinci routed former champion Ana Ivanovic 6-0, 6-0.

The 28th-ranked Vinci needed only 45 minutes to eliminate 12th-ranked Ivanovic and advance to the third round of the hardcourt tournament. Ivanovic won the Rogers Cup in 2006.

In other second-round matches, second-seeded Agnieszka Radwanska beat Mona Barthel 4-6, 6-3, 7-6 (5); 10th-seeded Li Na edged Canada's Eugenie Bouchard 6-4, 6-4;

Carla Suarez Navarro upset Sabine Lisicki 3-6, 6-3, 6-4, while No. 10 Marion Bartoli advanced with a 6-1, 6-3 win over Shuai Peng.

Also, Aleksandra Wozniak upset No. 18 Jelena Jankovic 6-2, 6-3. The 55th-ranked Wozniak, who was 0-4 against Jankovic, dominated the baseline duel.

Jankovic has struggled this season, losing in the first round for the fifth time in her last six tournaments and for the 13th time this year.

Americans Varvara Lepchenko and Chistina McHale won their matches. Lepchenko beat Dominika Cibulkova 6-4, 6-4, and McHale edged Galina Voskoboeva 7-5, 3-6, 6-2.

Many top players have had trouble finding the lines while making the switch to hardcourts after a month on grass at Wimbledon and the London Olympics. (AP)