Cavan's Leona Maguire finished in a tie for second at the Lotte Championship in Hawaii with New Zealand's Lydia Ko well clear as she claimed her first title in three years.
Ko shot a final-round 65 on Saturday to cruise to a seven-shot victory in Kapolei.
She finished at a blistering 28-under 260, easily outdistancing four players who finished tied for second at 21 under to take home the $300,000 prize.
It was the 16th career LPGA victory for the Korean-born New Zealand native but first in three years.
How brilliant & 'tough' is this. @leona_maguire joint runner-up in Lotte C’Ship. Highest finish by an Irish player on LPGA Tour & joint highest finish by an Irish woman on a major tour - in her first full season. Largest ever career cheque - $125K & Lydia Ko is a winner again👏👏 pic.twitter.com/99YDu4ErW2— Greg Allen (@gregallenRTE) April 18, 2021
South Koreans Inbee Park (63) and Sei Young Kim (65), Maguire(67) and Nelly Korda (71) finished at 267 at the Kapolei Golf Course.
Maguire's round consisted of four birdies, an eagle and a solitary bogey.
Stephanie Meadow finished with a round of 70.
Win a tournament ✅— LPGA (@LPGA) April 18, 2021
Perform a hula dance ✅ pic.twitter.com/Um27MuNK9F
Jenny Shin (63) of South Korea, Wei-Ling Hsu (66) of Chinese Taipei, Sarah Schmelzel (66) and Yuka Saso (70) of the Philippines finished tied for six that nine strokes back.
Ko, one week from her 24th birthday, played bogey-free golf in the final round but carded just two birdies on the front nine. But she scorched the back nine with five birdies to put the finishing touches on a 67-63-65-65 tournament.
She entered the final round with a one-shot lead.
It was Ko's first victory since the 2018 Mediheal Championship. Ko was relieved to have snapped her 1,084-day drought between victories.
"When you're in that position [to win] and it doesn't happen, you do doubt. IfI said, no, I didn't doubt myself at all, that would be a lie," Ko told Golf Channel after her victory and her return to the winner's circle.
"Hand on my heart, there were times when I wondered, 'Hey, I don't know if I'm ever going to be back in the winner's circle.' ... To be back in this kind of position is obviously super cool," Ko said.
Enjoyed every minute of my first trip to Hawaii @LPGALOTTE 🌺 My best finish so far on the @LPGA T2! Thank you everyone for the support, especially those who stayed up all night to watch!! 💚🇮🇪 #onwardsandupwards pic.twitter.com/IaMdZv5F4j— Leona Maguire (@leona_maguire) April 18, 2021
"You know, with Jordan Spieth and Hideki Matsuyama winning the last couple weeks -- and I know it's been a while since they won, as well -- that kind of gave me a little bit of hope that maybe I could follow that trend."
Ko moves into a tie for 35th with World Golf Hall of Fame member Jan Stephenson for most wins on the LPGA Tour.