MONTREAL (AP) — Sabine Lisicki upset 13th-seeded Sara Errani 6-1, 7-5 in the first round of the Rogers Cup on Monday.
Errani, the 2012 French Open runner-up, is most comfortable on clay, while the 29th-ranked Lisicki likes the faster surfaces. Lisicki, the 2013 Wimbledon runner-up, hit the fastest recorded serve in WTA history (131 mph) last week at Stanford.
Errani was serving for the second set at 5-3 but let the lead slip away. Lisicki next plays Svetlana Kuznetsova or Madison Keys in the $2.44 million U.S. Open tuneup.
American Sloane Stephens used an accurate serve and steady pressure to eliminate Canada's Aleksandra Wozniak, 6-3, 6-0.
Stephens, ranked 22nd in the world, was never in trouble against the 26-year-old Wozniak, who is trying to battle back to her career-high No. 21 ranking after years of arm and shoulder trouble.
"She really played well," Wozniak said. "She served at a high percentage, 75 percent, and it was tough to return.
"It wasn't easy, for sure. You have a warrior mentality, you want to fight for every point, but she played great tennis. I didn't expect that. She played a perfect match."
Dominika Cibulkova advanced with a hard-fought 6-1, 3-6, 6-0 victory over 17-year-old crowd favorite Francoise Abanda. The Slovak righted herself in the third set and sealed the victory with an ace.
The 10th-seeded Cibulkova takes on Britain's Heather Watson in the next round. Watson edged Tereza Smitkova 6-4, 5-7, 6-4 in a battle of qualifiers.
American qualifier Shelby Rogers downed Ajla Tomljanovic 6-4, 7-6 (5) to set up a second-round meeting with the star attraction of this year's event, fifth-seeded Eugenie Bouchard of Canada.
"I think it will be fun," said Rogers, who beat Bouchard in three sets in a lower-level tournament in 2011 in Troy, Alabama. "Obviously the crowd is going to be for her, and I'm the underdog. I think it's kind of a fun story.
"There's no pressure. I'm just going to go out, play my game, do my best and try to enjoy the moment as much as I can."