COQUITLAM, British Columbia » Top-ranked Yani Tseng shot a 6-under 66 on Thursday to take a one-stroke lead after the first round of the Canadian Women’s Open.

Emerging from a midseason slump, Tseng had eight birdies and a double bogey at The Vancouver Golf Club. The Taiwanese star opened the season with victories in three of her first five events, then had a series of missed cuts and poor finishes before tying for 11th last week in the Safeway Classic.

Sacred Hearts graduate Ayaka Kaneko and Punahou grad Michelle Wie are tied for 77th at 2-over 74. Punahou grad Stephanie Kono is tied for 123rd after a 77.

Wie won this tournament in 2010 at St. Charles in Winnipeg, Manitoba.

After three-putting on the final hole, Wie cursed and threw her putter.

"I tapped in and I missed and, on that last one, I didn’t feel too good," Wie said "But other than that, I had a really solid round."

U.S. Women’s Open champion Na Yeon Choi is at 67.

Lydia Ko, the 15-year-old South Korean-born New Zealander who won the U.S. Women’s Amateur two weeks ago, was two strokes back at 68 along with South Korea’s Inbee Park. In January, Ko won the New South Wales Open in Australia at 14 to become the youngest player to win a professional tour event.

Brittany Lincicome, the winner last year in Mirabel, Quebec, opened with a 72.

Colsaerts eyes Ryder Cup

Nicolas Colsaerts shot a 3-under 69 in the Johnnie Walker Championship in Gleneagles, Scotland, leaving the Ryder Cup hopeful two shots behind the first-round leaders in the final event in the points races for the 10 automatic spots on the European team.

The big-hitting Belgian made five birdies — including four in five holes on Nos. 14-18 — to share eighth place. He must finish first or second be assured of an automatic position in the matches next month.

Australia’s Brett Rumford and Norwegian playing partner Knut Borsheim shot 67 to lead the tournament.