TORONTO -- Top-seeded Serena Williams advanced to the Rogers Cup quarterfinals Thursday, beating 13th-seeded Kirsten Flipkens of Belgium 6-0, 6-3. Williams, coming off a tournament victory 2 1/2 weeks ago in the Swedish Open, set up a match Friday against Slovakias Magdalena Rybarikova. "She wasnt able to play her game as much as she wanted to," Williams said. "When you play such a high-ranked player, you have to go in there with the mindset of do the best you can before they can step all over you." Wimbledon champion Marion Bartoli retired because of an abdominal injury early in the second set of her match against Rybarikova. "Kind of excess of tiredness and exhaustion on my body," Bartoli said. "The pain is so large and we cant really say right now exactly (if) there is a tear at some point or if its just like a huge tightness." Rybarikova led 7-6 (5), 1-0 when the seventh-seeded Bartoli stopped playing. Playing her first event since returning from a hamstring injury that sidelined her since her major victory in London, Bartoli was in obvious discomfort as she walked to the player bench area, where she had a trainer stretch her arm and leg. "Everything that happened for me since a month (ago), its not without any tiredness," Bartoli said. "It took me so much energy to win my first Grand Slam that at some point I will have a kind of low and its normal. Im human. At the end of the day I cant be winning after winning after winning without feeling at some point a kind of exhaustion." Earlier, fourth-seeded Li Na of China fought back from a three-game deficit in the final set for a 3-6, 6-1, 7-6 (5) victory over Serbias Ana Ivanovic. Third-seeded Agnieszka Radwanska of Poland also advanced to the quarterfinals, beating American Sloane Stephens 6-1, 7-6 (2). Fifth-seeded Sara Errani of Italy beat Alize Cornet of France 7-5, 7-6 (3); and Romanias Sorana Cirstea edged Serbias Jelena Jankovic 6-3, 6-4. In late matches, sixth-seeded Petra Kvitova of the Czech Republic beat 12th-seeded Samantha Stosur of Australia 6-3, 6-3; and Slovakias Dominika Cibulkova topped 10th-seeded Roberta Vinci of Italy 6-3, 7-6 (4). Mitch Richmond Jersey . Michell Burger, a woman who lives on an estate next to Pistorius gated community, said she and her husband were awoken by the screams in the pre-dawn hours of Feb. 14 last year, when Pistorius killed Reeva Steenkamp by shooting four times through a door in his bathroom. Cazzie Russell Jersey . Now, with Game 6 set for Fenway Park and an 8:07 p.m. ET first pitch, the Detroit Tigers face the unenviable task of having to beat the Boston Red Sox twice, on the road, to advance to the World Series. https://www.cheapwarriors.com/169o-andris-biedrins-jersey-warriors.html . 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Rather than sabotage North Queenslands NRL title defence, ex-Cowboy Josh Hannay believes their epic semi-final win has provided it a timely shot in the arm.There are fears North Queensland may battle to back up from their extra-time 26-20 semi-final triumph over arch rivals Brisbane in tropical Townsville last Friday night.Especially against a Cronulla side fresh from a week off.Even Cowboys coach Paul Green has admitted to fears of a second half fadeout against the Sharks in Friday nights preliminary final at Allianz Stadium.But former Cowboys centre Hannay believes the rush of winning their high-profile derby against the Broncos play a bigger role than fatigue in the grand final qualifier.Everyone is talking about their recovery and travel, Hannay told AAP.But the benefits they would have got out of that victory (over Brisbane) in terms of confidence and belief, that far exceeds any fatigue.And the realisation they are one game away from another grandd final will really help them.ddddddddddddHannay said the semi-final derby was just what the Cowboys needed after their opening finals loss in Melbourne.Coming off last week would have given them a lot of confidence, said Hannay, who played 150 games for the Cowboys from 1998-2006.It was probably the win they needed coming off a hard fought loss to Melbourne.A local derby is second only to a grand final in terms of build up.It was a good game for them to get back up for.Hannay hoped the Cowboys could back up - he believed they would need all the energy they could get to blunt a fresh Sharks team.I would dare say Cronulla will be fresh coming off the blocks after having the weekend off and not having to travel, Hannay said.I think the key will be the Cowboys matching the start Cronulla will be coming out with on Friday night. 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