Han managed to force the playoff with a birdie on the 17th at the Magnolia Grove Crossings Course. On the first extra hole, Delasin dropped a wedge within 10 feet of the cup and drained the birdie putt for the win. Han had left her birdie try inches short of the cup.
'It's been a tough year-and-a-half for me, so to come out strong it means so much to me,' said a tearful Delasin, whose last victory was at the 2001 Samsung Championship. 'I made my putt on 10 and I was like 'Wow, I am getting my ball rolling.' Then I didn't make any putts from 11 through 18 and I just stayed patient. I was getting frustrated, but my caddie helped keep my head in the game.'
Laura Davies fired a 7-under 65 Sunday to finish in third place at 7-under-par 281. Grace Park carded a 4-under 68 to move into a tie for fourth place at 6-under-par 282. She was joined there by Mi Hyun Kim and Rachel Teske, who both closed with 69s.
Delasin, who opened the final round with a one-shot lead, was caught early on by Park. Delasin birdied the first and third, but was caught after bogeying the sixth. Park had posted four birdies through eight holes to move to minus-6.
Delasin regained the lead at No. 7 when she birdied to grab a two-stroke lead, as Park fell off the pace with a double bogey at the ninth. Delasin, now a four-time winner on the LPGA Tour, moved to 8 under with a birdie No. 10.
Davies made a run at Delasin. She birdied five of her first 10 holes, but managed just birdies on 13 and 17 down the stretch to finish one back.
'I putted very well and hit a lot of good irons in the middle of the round,' said Davies. 'I started hitting a lot of good irons and made a couple of putts to keep the momentum going, and that's really the key to the round.'
Han was the one who made the best charge though. After an uneventful front nine with a bogey and a birdie, Han forged her way to the top on the back side.
The South Korean birdied the 10th, then climbed within one shot of the lead with back-to-back birdies from the 13th. Han rolled in an eight-footer for birdie on the 17th to tie Delasin for the lead.
Delasin and Han both had birdie chances on the 18th, but neither was able to convert forcing the extra hole.
'I had some doubts, but I just told myself to keep hitting solid shots and try to make as many putts as you can,' said Delasin, who earned $122,000 for the win. 'And if you win great, if you don't great too, because you played solid golf.'
Delasin collected enough money to move to vault to 22nd on the LPGA Tour money list. The first-place check got her into next week's season-ending ADT Championship, which is reserved for the top 30 on the money list.
Han was philosophical about the loss.
'It was a nice comeback,' said Han, who won twice this season. 'But Delasin's playing good. She made the putt in the playoff and I just missed.'
Rosie Jones shared seventh place Karrie Webb at 5-under-par 283. Lorie Kane finished one stroke further back at minus-4.
Beth Daniel posted a 4-under 68 to move into ninth place at 2-under-par 286. She was followed by 2002 champion Se Ri Pak at minus-1, while Candie Kung and Meg Mallon were next at even-par 288.