In a season full of talk about the parity in women's tennis, unheralded Galina Voskoboeva became the latest to step up and prove that point.
The 26-year-old from Kazakhstan, ranked just 135th in the world, beat fifth-seeded Maria Sharapova, 6-3, 7-5, on Thursday at the Rogers Cup as two recent Grand Slam champions also lost.
Voskoboeva, who cruised past Marion Bartoli and Flavia Pennetta to earn her date with Sharapova, beat the Russian veteran with lovely drop shots and had the 6-foot-2 Sharapova chasing balls back to the baseline all game long.
Sharapova became the latest casualty of a draw which has lost 11 of the 16 seeds.
"It makes for an exciting story because at the end of the day it doesn't matter what you're ranked or seeded, the reason we go out and play the matches is to know who's going to be the winner on that day," said Sharapova, who has 23 career singles titles. Voskoboeva reached her first career semifinal earlier this year.
Hours earlier, No. 6 seed Li Na, the French Open champion, was knocked out of the third round with a 6-2, 6-4 loss to No. 10 seed Samantha Stosur of Australia.
Serena Williams advanced with a 4-6, 6-3, 6-3 win over Chinese qualifier Zheng Jie.
At the Rogers Cup men's tournament in Montreal, Jo-Wilfried Tsonga beat former No. 1 Roger Federer, 7-6 (3), 4-6, 6-1. Federer is the latest big-name to lose in the event, following Andy Murray and Rafael Nadal.
But world No. 1 Novak Djokovic kept up his strong play this season with a 7-5, 6-3 victory over Marin Cilic of Croatia to reach the quarterfinals. Djokovic is 50-1 this year.