The finish was similar to The Office Depot a year ago, when Sorenstam overcame an LPGA-record 10-stroke deficit to beat Hurst. In that event, Hurst missed a playoff after hitting into a bunker on the final hole.
'I did everything I could,' Sorenstam said. 'Sometimes that means a lot to me. Winning is great and everything, but I did everything I could today. If Pat would've birdied 18, I still would've been happy. Sometimes you can only do so much.'
With the two battling for the top spot throughout most of the final round in Franklin, Tenn., the tournament was rightfully decided at the par-5 18th.
Sorenstam, playing two groups ahead of Hurst, made a routine birdie after getting up and down to enter the clubhouse at 17-under. She then waited for Hurst to finish.
Hurst birdied No. 17 to go to 17-under and learned that she and Sorenstam shared the lead. After a drive that left her 199 yards to the green, she went pulled out a 3-wood, only to have it drift right and roll into the drink.
She then chipped across the green to 25 feet and missed the par putt to finish one back, at 16-under.
The victory - the 34th in her career - was Sorenstam's third in seven LPGA Tour starts this year and fourth win overall this season. He tournament record 17-under 271 total earned her $120,000.
'The more you win, you realize how much fun it is, and how much it means to you. To me, anyway,' Sorenstam said. 'They mean more in a way. You know how tough it is to win, and you don't know how many more you're going to win. You have to be thankful for the ones you win, and that's where I am, and that's why they mean a lot.'
Grace Park (67) finished three strokes back. Nineteen-year-old rookie Natalie Gulbis, who started the round with her first lead in only her seventh LPGA event, finished eighth at 9-under after shooting a 74 in a round that featured two double bogeys, four bogeys and six birdies.
Final results from the Aerus Electrolux USA Championship