Australia's Minjee Lee was in awe of the shot New Zealand's former world No.1 Lydia Ko produced to beat her at the LPGA Tour event in San Francisco.
The two 21-year-olds went head to head in a sudden-death playoff after Lee made up three shots to catch overnight leader Ko with a closing four-under 68.
But it was over quickly.
Ko struck a sublime 3-wood second shot that cleared tree limbs on the first extra hole - the par 5 18th - then landed on the green, rolling just inches by the pin to finish a metre away.
Lee holed a 10-footer for birdie but Ko rolled her putt in to win with an eagle.
"I don't know if anybody could beat that," Lee said about Ko's second shot. "It was perfect. It was straight over the tree and it just rolled straight next to the pin."
The Kiwi's 15th LPGA victory was especially sweet, ending a title drought dating back over 43 events to July 2016, during which she was questioned over switching coaches and caddies.
Chasing a fourth LPGA title, Lee was clearly comfortable on the Lake Merced course where she won the 2012 US Girls' Junior title.
But Ko had even better history there, having won the LPGA Swinging Skirts tournament at the tree-lined layout in 2014 and 2015.
"My whole team and my family, they've worked really hard for this moment," Ko said. "I'm happy that a few of them are here and we can celebrate together."
She was feeling confident when she lined up her 3-wood shot on the first playoff hole.
"I hit some really good 3-woods today and I said, 'Hey, you've got to maybe try and copy the one on the other par 5," Ko said. "I was able to hit a good shot again. I didn't really know how close it was going to be."
American Jessica Korda played in the final group with Ko but finished with a 74 to drop into a tie for third at 8 under with Angel Yin (67), Shanshan Feng (68) and Charley Hull (70).
Ko was considering celebrating her first adult victory with Korda's birthday present.
"Jess gave me a bottle of vodka for my birthday and she said it's really smooth," Ko said. "I don't know if vodka's ever smooth, so maybe we might open that."
