Australia's Su Oh has produced a bogey-free round to finish two shots from the lead in lightning-delayed start to the Canadian Pacific Women's Open.
Su Oh carded a four-under-par 68 at Priddis Greens, courtesy of birdies on the first, sixth, 13th and 16th holes.
She trails early leader Stephanie Meadow from Northern Ireland who fired a six-under-par 66 in a round that included seven birdies and a bogey.
Fellow Australian Minjee Lee has made a bright start with two birdies at two of her first seven holes.
Three-time champion, New Zealand's Lydia Ko, is well placed.
The top-ranked Ko shot a five-under 67 in the round delayed for nearly three hours, leaving her a stroke behind Meadow.
Ko has won the event three of the past four years, the first two as an amateur.
The 19-year-old has four LPGA Tour victories this season, winning the ANA Inspiration for her second major title.
Meadow, the 24-year-old former Alabama player, birdied the final two holes, closing with a 20-footer on the par-4 ninth.
South Korea's Mirim Lee and Mi Jung Hur matched Ko at 67.
