Rochester, NY (My Sportsbook) - Jiyai Shin extended her lead to four shots at the Wegmans LPGA on Saturday with a five-under 67 in the third round.

Shin moved to 16-under-par 200 on the Locust Hill course to put some more distance between herself and Morgan Pressel as she heads to Sunday seeking her fifth win.

Pressel trailed by a single stroke when she finished her second round in the morning, shooting a 66, but she dropped four off the pace with a third-round 70 that moved her to 12-under 204.

Stacy Lewis (70) was in third place at 11-under 205, while Lindsey Wright (67) and Sandra Gal (69) shared fourth at 10-under 206. Sun Young Yoo (69) was another shot further back at 207.

The second round was completed Saturday morning following two days of weather problems.

Shin rolled in a nine-foot birdie putt on her first hole -- but, saying she felt "nervous" on the front nine, she failed to get up-and-down on the way to bogey at No. 6.

It marked her only dropped shot of the third round.

Shin caught fire on the back nine, keeping her position in front of Pressel with five birdies, including a four-footer at the 10th and a nine-footer at the 11th.

"I felt my confidence coming back," she said.

She holed a 12-foot birdie putt at the 13th, rolled in a 16-footer for birdie at the 16th and made a five-footer for her last birdie at the 17th.

Pressel, meanwhile, struggled to keep up. She bogeyed her first hole of the third round, then was never able to get a sustained run going. She had two birdies on the front nine: a pair of 15-footers at the fourth and eighth holes.

She didn't pick up another shot until the 17th, where she knocked a lob wedge within five feet to set up her last birdie.

Pressel, seeking to salvage what has been a disappointing half-season, knows she has to make up ground Sunday against a tough competitor. She has only won once since breaking through for her first title at the 2007 Kraft Nabisco, a major.

"Gotta go out hunting birdies tomorrow," Pressel posted on her Twitter page after the round.

She will play in the final pairing with Shin, the reigning Women's British Open champion, who is looking for her fifth win in the last 11 months.

Shin is considered a rookie this season despite her recent success.

Last year, the 21-year-old Korean became the first non-LPGA Tour member in history to win three events in one season. She claimed title No. 4 at this season's HSBC Champions event in Singapore.

"I'll try to do my best for tomorrow," she said.