Byeong-hun An defeated fellow South Korean Tom Kim in a play-off to claim the Genesis Championship on home soil.
The home favourites began the day as joint leaders, but the chasing pack ensured there would be a chaotic final round at Jack Nicklaus Golf Club Korea with six players at the summit in some capacity.
Kim eventually took the initiative down the final stretch at 17-under par after An bogeyed the penultimate hole to slip back.
Both players had birdie putts from eight feet at the last, with An applying the pressure by nervelessly holing his effort to rejoin Kim at the top of the leaderboard.
The world number 25 looked to have followed suit, but his putt lipped out to deny him victory and force a play-off.
"It's a bit of a shame that Tom had a bit of a mess there, but it’s been a great tournament for me"
Going down the last once again in the play-off, both players tried to reach the par-five hole in two, which left Kim in a precarious position with his ball in the thick rough by the greenside bunker.
He fired his third shot across the green and into the main stand before chipping back onto the putting surface, while An chipped to within three feet to leave a birdie chance.
Kim missed his par putt, leaving An with two chances to claim victory. The world number 36 only needed one to lift the second DP World Tour title of his career, over nine years since his first at the BMW PGA Championship in 2015.
"It's great, I’ve had a great season, it’s been too long (to win) on the main Tour," An said.
"All I tried to do is show some great golf in front of the home fans, it’s been a while since I’ve played in front of them.
"It feels amazing, it’s a bit of a shame that Tom had a bit of a mess there, but it’s been a great tournament for
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