'I just had a feeling this whole week it was going to be my week,' acknowledged Kerr, who pocketed $165,000 for the win. 'I just knew that I just had to hang in there and just keep going and applying pressure. That's what happened.'
Ji Yeon Lee carded a 3-under 69 in the final round to finish alone in fifth place at 16-under-par 272.
Kerr did not look like she would threaten Stanford's lead as she pulled her approach at the first, but she drained the 50-footer for birdie. Stanford actually holed a 7-foot par putt of her own at the first, but Kerr continued to apply the pressure.
Kerr hit an 8-iron to 12 feet to set up birdie at the fifth, then got within one of the lead thanks to a 9-foot birdie putt at No. 7. When Stanford missed a 4-foot par putt at eight, the two were tied.
At the par-4 10th, Kerr hit an 8-iron inside a foot to set up a tap-in birdie. That put her one ahead, but the par-4 13th became the pivotal hole of the round.
Stanford hit a poor 5-iron approach shot and chipped to 10 feet. Kerr knocked a 6-iron to 20 feet and sank the birdie putt. Stanford missed her par effort to fall three off the pace.
Ochoa briefly cut the gap to two, but had a chance to challenge Kerr. Ochoa found the fairway off the par-5 18th tee, but dunked her second in the water. She made par, but knew she would need Kerr's help if she was to have a crack at a playoff.
Hurst flew up the leaderboard with five birdies in a row to close her round, but it was not enough. If anyone was going to catch Kerr, it would have to be Stanford.
The 54-hole leader never got anything going down the stretch, but did birdie 18 to get into the tie for second place.
'It was a rough day,' admitted Stanford, whose only win on tour came in 2003. 'Any time you can be in the lead and put yourself out there; you're going to learn something. And the more times you can do it, the more chances you have to win. I haven't been in that position in a while, and I plan on being in that position a few more times this year.'
For Kerr, it marked her first trip to the winner's circle this season.
'You can really only control what is in your control, and I just tried to play a solid round of golf,' said Kerr. 'I knew I was going to have to shoot 5- or 6-under. At times, hit it great; at times didn't, and I was managing my golf game out there.
'It feels great, just absolutely great.'
Marisa Baena fired a 9-under-par 63 and tied for sixth place with Sophie Gustafson, who posted a 1-under 71 on Sunday. The pair finished at 15-under- par 273.
Young Kim carded a 7-under 65 and shared eighth place with Patricia Meunier-Lebouc, who shot a 71, at minus-14.