Jessica Korda edged out fellow American Stacy Lewis to capture the Pure Silk-Bahamas LPGA Classic title.
The 20-year-old birdied the final two holes to claim her second LPGA Tour success thanks to a seven-under-par 66.
Korda, who also won the 2012 Australian Open, finished on 19-under 273 at the Ocean Club Golf Course on Paradise Island, one ahead of Lewis who also closed with a 66.
Lewis made a storming start and birdied six of the first eight holes before dropping a shot at the ninth.
She added further birdies at the 11th and 14th but pars on the last four holes allowed Korda to leapfrog her at the top of the leaderboard.
Korda posted five birdies between the fourth and 10th and she bounced back from her only bogey at the 13th with decisive birdies at the 15th, 17th and 18th.
She tied Lewis for the lead with a 12-foot birdie putt on the par-three 17th and then got up and down from the back of the green for a birdie on the par-five 18th.
There was a four-way tie for third place on 16 under featuring American duo Paula Creamer (69) and Lizette Salas (71) as well as Thailand's Pornanong Phatlum (67) and overnight leader Na Yeon Choi of South Korea (72).
England's Jodi Ewart Shadoff finished in a tie for 23rd place after closing with a 69.
New Zealand teenager Lydia Ko shot 68 and shared seventh with three others on 277 in her first LPGA Tour event as a member.