The 20-year-old Canadian then roared through the turn with another birdie at 18 and three more on the way home for a bogey-free five-under 68.
"My hat felt like it was falling off all the time, and it was just hard to have good balance over the putt for that long and have a good stroke on it," Henderson told LPGA.com. "But I think by Sunday we will all be pretty good wind players."
LPGA rookie Luna Sobron Galmes of Spain and Australian Sarah Jane Smith are lurking one shot behind Henderson.
Chinese world number one Shanshan Feng headlines a pack of six golfers sitting one stroke further adrift on three-under 70.
American Brittany Lincicome, who won last year's event in a playoff over Lexi Thompson, opened with a one-over 74 to sit six off the pace.
Play was suspended due to darkness with 12 players still on course.
(Editing by Greg Stutchbury)
Share
