SINGAPORE -- Amy Olson's eagle on the front nine and a late birdie on the 16th hole were enough for the American to emerge from a five-way tie from the first-round lead to shoot a 3-under 69 and take a two-stroke lead after two rounds at the HSBC Women's World Championship.
The 26-year-old American had a two-round total of 7-under 137 Friday on the Sentosa Golf Club's Tanjong course.
There was a five-way tie for second —Inbee Park (69), Azahrara Munoz (68), Jodi Ewart Shadoff (70), No. 1-ranked Ariya Jutanugarn (71) and No. 3 Minjee Lee (71).
After an eagle on the par-5 eighth on Thursday, Olson did the same on the par-5 fifth in the second round.
"I've made some pretty good shots on both those par fives to set them up," Olson said.
No. 4 Park, making her first start of the LPGA season, said she was "feeling kind of rusty, but happy where I am at the moment."
Former No. 1 Lydia Ko shot 70 and was 2-under. Nelly Korda, who won the Women's Australian Open two weeks ago, shot 70 and was at even-par.
Korda had a painful 74 in her opening round, and tweeted about it later.
"Well, I tried to get out of some trouble by punching out... I proceeded to hit a tree ... and slammed the grip end of the club in the ground, little did I know it was going to bounce up and hit me full force in my lip," she said on Twitter. "That's what we call Karma."
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