SINGAPORE－Winning is everything for Michelle Wie.

It was a feeling she could reacquaint herself with following a long wait after draining an astonishing birdie putt from off the green on the last hole of the HSBC Women's World Championship on Sunday.

The 28-year-old American's last victory was at the 2014 US Open and after subsequent years battling injuries and technical changes, Wie had some unfinished business in Singapore after she led after three rounds a year ago but failed to seal the deal.

"It's been a tough journey since 2014. I think it's been kind of well documented. You know, I've had some injuries, had a really bad year, just lost a lot of confidence," Wie said.

"But I'm just really proud of myself for pulling myself out of it. I felt like I had a good year last year, a year in which I built confidence, and I just want to keep building confidence from there."

On Sunday she started her final round five strokes back of leader Nelly Korda but chipped away at the deficit with six birdies over her first 17 holes until she delivered the coup de grace with a shot that will be remembered for years.

Wie was entrenched in a four-way tie for the lead as she watched her approach shot land short of the green but just moments later, she was galloping towards the hole and pumping her fist as her ambitious 45-foot effort found the cup.

"Winning is everything. I mean, there is no better feeling than when you sink that winning putt. It's a high, for sure," Wie, dressed in bright pink and with dyed-blonde locks, said after signing off on a 7-under 65 to complete a one-stroke victory with 17-under for the tournament.

"You go out there, and it's this feeling that gets you going. It's this feeling that makes you practice. It's that winning putt that makes you practice for hours and hours and hours. Even in the hard times, it gets you going back.

"You know that good feeling is on the other side. It's just everything. Winning's everything."