Aditi Ashok stayed in touch with the leaders as she added two-under 70 to her first round 68 to get to six-under and stay in the Top-10 of the Cambia Portland Classic here.
The 19-year-old Indian rookie, Aditi, had three birdies against one bogey.
Coming back after a three-week break, Aditi found more fairways but reached fewer greens in regulations than the first day. But she needed only 28 putts as compared to the 31 on first day.
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Lewis fired a bogey-free round yesterday, with eight birdies and no bogeys. Her 8-under-par 64 has been the round of the tournament so far.
Indeed, it was her second-lowest single round score of the year (she shot a 63 at the Pure Silk Bahamas LPGA Classic in January, the first event of the year).
Lewis admitted if she won this week it would be 'up there with a major' in terms of how special this particular result would be.
However, Lewis will face stiff competition from two-time defending champion Brooke Henderson and In Gee Chun - who is looking for her first win on the season.
Henderson shot her second-straight 5-under-par 67 yesterday and had the lead outright at 11-under thanks to an eagle two on the par-4 11th, but made a bogey on the par-3 16th to fall back into a tie at 10-under with Lewis and Chun.
A trio of golfers are just two shots back heading into the weekend including Jodi Ewart Shadoff, Ai Miyazato - who is playing in her final LPGA Tour event on US soil prior to retiring, and Moriya Jutanugarn.
The cut was 1-under par.
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