Result: Serena Williams eases past Andrea Petkovic to reach Rogers Cup quarter-finals

US players Serena Williams celebrates after beating Britain's Heather Watson during their women's singles third round match on day five of the 2015 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on July 3, 2015
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Serena Williams breezes into the quarter-finals of the Rogers Cup with a 6-3 6-2 win over Andrea Petkovic in 64 minutes.

Three-time Rogers Cup champion Serena Williams has advanced into the quarter-finals of the competition after beating Andrea Petkovic in straight sets this morning.

The world number one, whose last triumph came in 2013, managed a 6-3 6-2 victory in just over an hour to move three wins away from a fourth title in Toronto.

Both women held serve for the first seven games of the opener, but a costly slip-up by Petkovic saw the American break to move 5-3 ahead en route to drawing first blood.

Williams broke her German counterpart in the opening game of the second set, before breaking again in the seventh and the 21-time Grand Slam champion would not be caught from there.

She faces Italian Roberta Vinci in the last eight.

Serena Williams of the United States celebrates winning her semifinal match against Madison Keys of the United States during day 11 of the 2015 Australian Open at Melbourne Park on January 29, 2015
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