Lydia Ko has finished tied for ninth place at the Mediheal Championship in San Francisco - enough to send the Kiwi to the top of the LPGA's points table.
Ko shot a two-under 70 final round to finish her tournament at six under par, sharing ninth with Ireland's Leona Maguire, England's Jodi Ewart Shadoff and American Angel Yin.
With her sixth top-10 finish this season, Ko, 24, also overtakes Nelly Korda atop the LPGA's points table and leads the race to qualify for the season-ending tournament.
That tournament - the CME Group Tour Championship in Florida - has a prize pot of US$5 million (NZ$7m).
At 14-under, Finland's Matilda Castren took first place at Lake Merced, two shots clear of second-placed Min Lee and eight clear of Ko.
Eleventh entering her final round, Ko began a late run up the leaderboard with birdies on the fourth and fifth holes, and improved to six-under, before suffering a bogey on the eighth.
Two more bridies on the 11th and 12th holes were followed by one last bogey on the 14th, keeping the Kiwi at -6 with her third straight round of 70, after an opening 72.
"Apart from the first day, I played really solid," Ko says. "I think there were just a few putts that could have gone in.
“Could have, should have, but didn't, but other than that, I played really solid. That's all you can do.
"It's good to get back on some good momentum. I finished strong last week on the last day of the US Women's Open, so I think that gave me a little bit of confidence.
"When you have been playing well and you have a mediocre week, it kind of throws you off a little bit. I think hopefully this week will put me back on track.
"I should have made my birdie on 17. That would've been nice, but it is what it is and I'll take two under today."
Ko will next be in action at the LPGA Meijer Classic from June 17-20 in Michigan.