Serena Williams, who captured the Rogers Cup in 2001 and 2011, easily won her opening match this year by beating former French Open champ Francesca Schiavone in straight sets Wednesday. 

The top seeded Williams eliminated Italy’s Schiavone 6-3, 6-2 in the WTA Tour’s $2.4 million hardcourt tournament.

“She’s a grand slam champion so I had to really focus,” said Williams, who was the runner-up in Toronto in 2000. “I made a few errors but it’s my first match on hard (courts) in a really long time.”

Williams next faces No 13 seed Kirsten Flipkens, who beat Dutch qualifier Kiki Bertens 7-5, 3-6, 6-2. Flipkens ousted Venus Williams in the first round earlier this week, but this will be the first career match between her and Serena Williams.

Williams said she is confident going forward in the tournament.

“It took me a few games to adjust to her game. Now I feel like I’m completely adjusted, and I feel good going into the next round,” Williams said.

Last year’s runner-up Li Na, of China, Wimbledon champion Marion Bartoli and Petra Kvitova also won their Toronto openers in straight sets.

Fourth-seeded Li stormed to a 6-1, 6-4 win against Russia’s Anastasia Pavlyuchenkova while seventh seed Bartoli, who won her first Grand Slam title at Wimbledon last month, took the first seven games of her match with America’s Lauren Davis in a 6-0, 6-3 victory.

“So I just wanted to enjoy myself on the court and try my hardest, and being able to win 6-0, 6-3 was obviously pretty good for me. I think I played well, and I’m very pleased with the way I handled everything on the court today.”

Bartoli had been scheduled to make her post-Wimbledon return in California last week, but had to pull out with a hamstring injury.

Romania’s Sorana Cirstea pulled off one of the biggest upsets of the event so far by beating world number 10 Caroline Wozniacki in three sets. Cirstea rallied from an opening-set loss to win 5-7, 7-6 (7/0), 6-4 outlasting Denmark’s Wozniacki in a marathon match that finished just four minutes shy of three hours.  

Czech star Kvitova downed crowd favorite Eugenie Bouchard, of Canada, 6-3, 6-2 in the night match. Australian Samantha Stosur, who was the runner-up here two years ago and last week’s titlist in Carlsbad, beat Spain’s Carla Suarez Navarro 1-6, 6-2, 6-3.

Former world No 1 Ana Ivanovic defeated Anastasia Pavlyuchenkova 6-1, 6-4. Ivanovic was the Toronto winner seven years ago.