Suzann Pettersen moved into position for her first LPGA Tour victory of the year, shooting a 3-under 69 on Saturday to take a one-stroke lead in the Lorena Ochoa Invitational.
Pettersen, the Norwegian star who has 10 top-five finishes season, was 12 under on the Guadalajara Country Club course. She had five victories in 2007 and also won the 2009 Canadian Women's Open.
Ai Miyazato (68), Stacy Lewis (69), In-Kyung Kim (68) and Karine Icher (68) were tied for second, and second-round leader Paula Creamer (72) was another stroke back at 10 under.
Pettersen birdied five of the first 10 holes to reach 14 under, but dropped two strokes with bogeys on the par-4 15th and par-3 17th.
Ochoa, playing her first LPGA Tour event since retiring in April, shot a 69 on her home course, leaving her 10 shots back in a tie for 24th.
Michelle Wie, the winner last year, withdrew Thursday because of a back injury after an opening 78.