PRIDDIS, Alberta — Three-time champion Lydia Ko was back on the Canadian Pacific Women’s Open leaderboard. Canadian star Brooke Henderson got left behind after a late start.

The top-ranked Ko shot a 5-under 67 on Thursday at Priddis Greens in the round delayed for nearly three hours because of lightning, leaving her two strokes behind leader Chella Choi.

“I had lunch like three times and I had fro-yos,” Ko said. “I wish there could be a switch where we could put out the sun or put some overcast. But when it comes to weather, we can’t control it, so when it’s that case, you just have to go with it.”

The 18-year-old Henderson was 1 under with three holes left when play was suspended because of darkness. Choi was 7 under with four holes left.