Hudson Swafford carded an eight-under 64 to charge to his third career PGA triumph winning the American Express by two shots from Tom Hoge at La Quinta on Sunday.
The 34-year-old American enjoyed a remarkable final day after bogeying the first hole, with nine birdies and an eagle on the 16th to finish victorious at 23-under.
Entering the 16th hole, Swafford was level with Francesco Molinari and Brian Harman at 20-under but a clutch second shot set up eagle, before a birdie on the 17th and making par on the 18th to close out the win.
Swafford's previous two PGA titles came in 2020 and 2017, the latter being at the same event. He had five birdies and an eagle on his back nine along with two bogeys, edging out Hoge who carded a four-under 68 on the final day to finish 21-under.
Harman, Lanto Griffin and overnight joint leader Lee Hodges were equal at 20-under, with the latter struggling with a two-under-par 70 on Sunday.
Fellow day three joint leader Paul Barjon slipped down the leaderboard with a one-over-par 73 to finish 17-under.
Reigning PGA Tour Player of the Year Patrick Cantlay was unable to make a final day move, carding a four-under 68 to end up 18-under, behind Will Zalatoris, Denny McCarthy and Molinari (all 19-under).