A U.S. Open Series event
Friday
At Uniprix Stadium
Montreal
Purse: $2.44 million (Premier)
Surface: Hard-Outdoor
Singles
Quarterfinals
Serena Williams (1), United States, def. Caroline Wozniacki (11), Denmark, 4-6, 7-5, 7-5.
Venus Williams, United States, def. Carla Suarez Navarro (14), Spain, 4-6, 6-2, 6-3.
Doubles
Quarterfinals
Cara Black, Zimbabwe, and Sania Mirza (4), India, def. Racquel Kops-Jones and Abigail Spears (6), United States, 6-1, 6-1.
Sara Errani and Roberta Vinci (1), Italy, def. Martina Hingis, Switzerland, and Flavia Pennetta, Italy, 6-2, 3-6, 10-1.
Chan Hao-ching and Chan Yung-jan, Taiwan, def. Michaella Krajicek, Netherlands, and Barbora Zahlavova Strycova, Czech Republic, 6-3, 6-3.
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