Cristie Kerr clinched a one-shot win at the CME Group Tour Championship after a final-round four-under 68.
The American shared the lead heading into the final round at the Tiburon Golf Club in Naples, Florida and did enough to secure her 18th LPGA Tour win.
At 17 under, Kerr finished clear of countrywoman Gerina Piller and South Korean Jang Ha-na, who were a shot behind.
"It's pretty cool. It's a lot of different honours," Kerr said.
"That's what the year end is about. It feels pretty cool to win the last tournament of the year."
Kerr needed until late on to get her round going, birdieing the 15th before an eagle at the par-five 17th.
Piller shot a 67 and Jang a 69, but they were unable to catch the 38-year-old Kerr.
Lexi Thompson (68) was fourth at 14 under, a shot ahead of Karine Icher (69) and two clear of Park Inbee (69).
In a tie for seventh were Sydnee Michaels (65), Minjee Lee (69), Amy Yang (69) and Lydia Ko (72).
Ko clinched the Player of the Year Award, with the 18-year-old becoming the youngest ever winner of the prize, and the Race to the CME Globe Title.
Park won the Vare Trophy, given to the player with the lowest scoring average for the season.