American Brittany Lincicome edged closer to her second major title after establishing a one-stroke lead after the third round at the LPGA Championship.
The second-round leader was not at her sparkling best, but stayed in front with a respectable one-under-par 71 at Monroe Golf Club in Pittsford, New York to post a 10-under-par 206.
Norway's Suzann Pettersen carded the equal best round of the day with a 67 to jump into a tie for second with defending champion Park Inbee (69), of South Korea, at nine-under.
Pettersen recovered from a bogey at the first hole, storming back with six birdies to surge into contention, while Park saved par from 12 feet at the final hole.
Another South Korean, Mirim Lee, was fourth at seven-under.
Lincicome, 28, won the 2009 Kraft Nabisco Championship, where she came from behind in the final round. The only other time she led after 54 holes at a major was the 2006 US Women's Open, where she shot a closing 78.