ROCHESTER, N.Y. (AP) -- Norway's Suzann Pettersen shot a 5-under 67 on Saturday to open a three-stroke lead over Morgan Pressel and South Koreans Eun-hee Ji and Inbee Park after the third round of the Wegmans LPGA.

"It's not like I'm surprised I'm playing solid, but I have less expectations, so maybe that's good," Pettersen, a five-time winner on the LPGA Tour in 2007, said after a bogey-free round got her to 14-under 202.

"Of course you want to win tournaments, but a tournament is a four-day race and you've got to make sure you're there every day. There's no room for mistakes. At least I'm in a good position for tomorrow."

The 28-year-old Pettersen is winless this season, but has finishes of second, third and ninth in 10 events and is ninth on the money list.

Ji, who has ties for fourth and ninth in her second year on tour, holed out from 170 yards to open with an eagle and ran up six more birdies for a 64 and a second-place tie at 11 under.

"I had some lucky holes today," said the 22-year-old Seoul native, whose best finish was second to Pettersen at South Korea's Kolon Championship in October. "I wouldn't say it's my turn to beat her. ... It's more about winning my first LPGA tournament."

The 19-year-old Park (69), who tied for fourth at the U.S. Women's Open in her rookie year in 2007, shot her third sub-70 round. And Pressel (71), who held a one-stroke lead over Pettersen after the second round, got her only birdie on the last hole.

"Nobody is unbeatable out there," Pressel said. "I'm not going to say I can't catch her (Pettersen), but she played great today."

Japan's Ai Miyazato and South Korean Hee-won Han were at 9 under.

Han, a six-time tour winner between 2003 and 2006, matched Ji's 64 -- the day's best round -- with six birdies in seven holes after the turn. She played a limited schedule in 2007 after the birth of her son, Dale, and recently traveled home to celebrate his birthday, which falls on Sunday.

A thunderstorm on an otherwise sunny, warm afternoon halted play for almost two hours at the Locust Hill course, a traditional, 72-par layout with narrow, tree-lined fairways and compact greens.

Cristie Kerr, preparing for her title defense in the upcoming U.S. Women's Open, was tied for seventh with Jeong Jang at 7 under. Kerr had a double bogey on No. 6.

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