Rochester, NY (My Sportsbook) - Jiyai Shin easily won her fifth title in 11 months, cruising to a seven-shot victory Sunday at the Wegmans LPGA after shooting a one-under 71 in the rain-soaked final round.

The rising Korean star finished four trips around Locust Hill Country Club at 17-under 271 -- well in front of Kristy McPherson and Yani Tseng, who both shot 66 to tie for second place at 10-under 278.

Haeji Kang (71), Mika Miyazato (71) and Stacy Lewis (74) shared fourth place at nine-under 279.

Morgan Pressel, who started the round four shots behind Shin and played in the final pairing with her, struggled to a 78 and ended 11 back at six-under 282.

The tournament, plagued by bad weather on Thursday and Friday, finished in a downpour on Sunday, prompting Lewis to post on her Twitter page minutes after the final round ended: "Question of the day: Why didn't we tee off earlier?"

"The crowds were great and it was building to be a really good finish and the weather just kind of pulled people away," Lewis said in her post-round interview. "I've never been here, but from what I saw yesterday, the crowds were awesome and it would have been probably twice as good today."

Signs of the bad weather were everywhere, even in the players' attire.

Pressel, dressed head-to-toe in rain gear, played her final holes wearing black gloves to help with her slick grips. It didn't help much. The former major champion shot a 44 on the back nine, making four bogeys and a disastrous triple-bogey seven on the par-four 13th.

Rain or shine, it would have been tough to catch Shin.

The talented 21-year-old did more than enough to protect the lead she held since Friday, starting her final round with a nine-iron inside 10 feet at No. 1 to set up a birdie.

Tense when she teed off, Shin settled down after the opening birdie.

"That birdie changed my feeling," she said. "I got my confidence back."

She bogeyed the par-three seventh, teeing off into the rough, but got the shot back on the next hole with a six-foot birdie putt. She made another birdie at the 10th, from 12 feet, then took back-to-back bogeys at the 13th and 14th holes.

Shin was already running away with the tournament, so the consecutive bogeys mattered little. She got one of the strokes back with a nine-foot birdie putt at the 17th.

Her presence at trophy presentations is becoming frequent.

Shin has two more wins than any other player since last July, when she broke through for No. 1 at the Women's British Open -- where she was playing without status on the LPGA Tour. Lorena Ochoa and Angela Stanford have three during the same span.

Now holding five wins, Shin is still considered a rookie this year. She has won twice already this season and is well on her way to being named Rookie of the Year.

"This year my goal was to win one time. But I've already won two times," said Shin. "And I have a lot of tournaments still to play. Maybe I'll try to win more."