PRIDDIS, Alberta — Ariya Jutanugarn had five birdies in a six-hole stretch and shot an 8-under 64 on Friday to take a three-stroke lead in the Canadian Pacific Women’s Open.

A week after withdrawing from the Rio Olympics because of a left knee injury, the 20-year-old Thai star played 20 holes Friday at Priddis Greens. She bogeyed the par-5 18th for a 68 in the completion of the delayed first round, then made eight birdies in her bogey-free second round.

“I just had to rest and take care of my knee,” Jutanugarn said. “After that, I feel like just play golf. It didn’t feel like anything changed.”

South Korea’s In Gee Chun and Northern Ireland’s Stephanie Meadow were tied for second. Chun closed birdie-eagle for a 67. Meadow had a 69. Three-time champion Lydia Ko was four strokes back.