Lydia Ko is in contention on the LPGA Tour, in second place and two shots off the lead in Phoenix, Arizona.
After a opening round 67, Ko went one better today at Wildfire Golf Club to be 11-under par through 36 holes.
After a level par front nine, Ko sparked into life on the back nine today, recording four birdies and an eagle in her final seven holes.
Crucial to Ko's improved scoring today was performance on the greens, take just 25 putts to get round - five less than yesterday.
On 11-under, the New Zealand 16-year-old begins tomorrow's third round two strokes off the halfway pace set by South Korean Mirim Lee.
Lee's opening day 64, the lowest score of the field so far, was followed up with a 67 today and like Ko, benefited from a raft of scoring opportunities on the back nine.
Also posting a modest score of level par through the front nine, Lee collected three bridies and an eagle on her way back to the clubhouse.
In a tightly-packed leaderboard, Sun Young Yoo is two strokes back of Lee and one adrift of Ko on 10-under with four players, including world number one Inbee Park, tied for fourth on nine-under.
Ko will join Lee in tomorrow's final group for the third round.
- Fairfax Media
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