American J.B. Holmes captured his fourth US Tour victory with a play-off win at the Houston Open in Humble, Texas.
The world number 20 began the day six back in 18th spot but made seven birdies in his first eight holes to set him on the way to a stunning 64 and 16-under total - matched by overnight leader Jordan Spieth and Johnson Wagner.
Despite a lengthy clubhouse wait, Holmes kept his nerve and focus and eventually won with a par at the second extra hole.
It was a bitterly disappointing finale for England's Paul Casey who finished 9th, four shots back after a one-under 71, and Phil Mickelson who hit his ball into the lake at the last and tied for 17th.
Said a victorious Holmes: "I knew I had to play a really low round and I started out great. It worked out for me."
The in-form, big-hitting J.B. could well be one to watch in this week's Masters at Augusta.