Pettersen shot a 4-under 68 at the Bay Course at the Kapalua Resort, giving her a one-shot lead over Brittany Lang and Tracy Hanson. Among those tied for fourth at 70 were Laura Diaz and Brandie Burton.
Among Pettersen's five wins last year was her first major title at the LPGA Championship. She has seven top-10 finishes this season without a victory.
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