D.A. Points waited out a lengthy weather delay on Sunday before carding a 6-under 66 to win the Houston Open.
Points finished the tournament at 16-under-par 272 to capture his second win on the PGA Tour and his first since the 2011 Pebble Beach National Pro-Am.
With the win, Points earned an invitation to The Masters in two weeks.
"I was in a real good flow before the rain delay. I was kind of firing on all cylinders and I'm proud of myself that the rain delay didn't put any hitch in that," said Points.
Henrik Stenson (66) and Billy Horschel (66) shared second place at 15-under, while Dustin Johnson (65) and Ben Crane (68) occupied fourth at minus-14.
Third-round co-leader Stewart Cink bogeyed his final hole en route to a 2- under 70, dropping him into a tie with Brian Davis (67) and Kevin Chappell (68) for sixth place at 13-under-par 275.
Bill Haas sat alongside Cink atop the leaderboard following three rounds at Redstone Golf Club, but managed just an even-par 72 during his final round to finish in a tie with five other players for 10th place at 11-under.
Five players each held a share of the lead at 14-under while on their back nine, but Horschel was the first to pull ahead and take the outright lead with a 7-foot birdie putt at the 13th.
Points joined him there with a 5-foot birdie putt at the 12th, and then rolled in another short birdie putt at the 13th to take sole possession of the lead.
Points followed that with a par at the 14th to maintain the lead just before play was suspended for about 2 1/2 hours due to thunderstorms.
Johnson, who was another one of the five players tied for the lead, was able to finish his round before the delay and closed with three pars to stay at 14- under.
Stenson, meanwhile, made a late push with four birdies over his last five holes to take the clubhouse lead at 15-under. He capped the stretch with a 9- foot putt at the last moments prior to play being suspended.
"I stood on 18 with (Angel) Cabrera and it's downwind, it's playing as short as it has done all week," Stenson said. "It was like come on guys, hurry up, let's finish and get this tee ball up and flying because coming back out there, that's not a tee shot you want to have left for later on tonight or Monday morning."
Horschel had a chance to move into a tie with Points for a share of the lead with a 41-foot birdie putt at the 18th when play resumed, but missed it just left before ending with a par to finish a stroke behind Points.
Points reopened his final round with three straight pars before just missing a bunker with his second shot at the par-4 18th to the right of the green.
His chip then settled a little over 13 feet from the hole to set up a decisive par putt, which he calmly rolled in to avoid a playoff with Stenson and Horschel.
"I would have liked to have been a little closer, but I've been putting well and I just thought you know what, just whatever happens, happens," Points said about his final putt. "Just hit a good putt and you can't control the breaks."
Haas and Cink shared a 1-stroke lead at the conclusion of the third round, but Horschel quickly joined them atop the leaderboard with a 16-foot birdie putt at the second.
Chappell, Kokrak and Stenson accompanied them at 11-under with birdie putts at the fourth, second and fifth, respectively, before Horschel was the first to take the outright lead with a 9-foot birdie putt at the fourth.
Points capped consecutive birdies at the second and third with a 29-foot putt to grab a share of the lead with Horschel.
But Johnson, who birdied three of his first five holes, surged ahead of the pack with three straight birdies starting at the eighth to take the lead at minus-13. His last two putts of that stretch came from lengths of 16 and 26 feet.
Horschel countered a 2-putt bogey from within six feet at the sixth with back- to-back birdies at the seventh and eighth to meet Johnson in first place.
A mistake by Johnson, however, allowed Horschel to gain sole possession of the lead as Johnson's drive at the 12th found its way into the water, resulting in a bogey after he missed a par putt from just beyond seven feet.
Kokrak was able to jump into a share of the lead with birdie putts at the fourth and eighth, and after birdies by Points and Johnson and an eagle by Crane crowded the top of the leaderboard at 13-under, Kokrak rolled in a 17- foot birdie putt at the ninth to pull ahead.
Kokrak almost suffered the same fate as Johnson when he hit his drive at the 10th out of bounds, but was able to scramble for par to maintain his lead.
Horschel again grabbed a share of the top spot with a short birdie putt at the 12th, and Johnson countered a bogey at the 14th with a 13-foot eagle putt at the 15th to join Kokrak at 14-under.
Crane then poured in a 10-foot birdie putt and Points rolled in a 9-foot birdie effort at the 10th to create the five-way tie.
NOTES: With his second-place finish, Stenson will move inside the top 50 of the world rankings and earn an invite to The Masters ... Geoff Ogilvy failed to make the cut in this event and will likely fall out of the top 50 and not make The Masters ... An American has won all 14 events on the PGA Tour this season ... Crane, Kokrak, Stenson, Horschel, Chappell, Bud Cauley, Cameron Tringale and Steve Wheatcroft also could have earned an invite to The Masters with a win at this event.