Bill Haas pulled ahead with a 20-foot birdie putt on the par-4 16th and parred the final two holes for a one-stroke victory Sunday in the Humana Challenge in La Quinta, Calif.

Haas closed with a 5-under 67 for his sixth PGA Tour title and first since the 2013 AT&T National. He won the 2010 event at PGA West for his first tour victory.

Part of a six-man tie for the lead after a par save on the par-3 15th, Haas got to 22 under with the birdie putt on 16 on the Arnold Palmer Private Course.

Haas two-putted for par from 20 feet on the par-5 18th after pulling off an awkward layup from the front lip of a right-side fairway bunker.

"I've been in a tournament where I've been maybe one ahead or tied, but not with five or six guys right behind me knowing that if I dump one in the water, I go from winning to finishing 10th," Haas said.

Matt Kuchar, Charley Hoffman, Brendan Steele, Steve Wheatcroft and Sung Joon Park tied for second. Hoffman and Steele shot 64, and Park had a 65, and Kuchar and Wheatcroft shot 67.

Kuchar had a two-stroke lead with four holes to play Saturday but bogeyed three of the last four holes in the third round.

Haas eagled the par-5 sixth for a share of the lead, setting up his 15-foot putt with a 260-yard 5-wood from the dormant left rough with the ball below his feet.

The 32-year-old former Wake Forest player birdied the par-4 eighth, punching a low, spinning wedge from 70 yards to 8 feet, and got to 21 under with a 7-foot birdie putt on the par-5 11th.

He made a key par save on the 131-yard 15th to keep a share of the lead. Short-sided in the left bunker, he blasted to 6 feet.

Haas broke out of the tie on 16, and then missed a 10-foot birdie try on the par-3 17th with a bighorn sheep grazing nearby at the foot of the Santa Rosa Mountains.

On the par-5 18th, with water running the length of the hole on the left, his drive stopped on the top edge off the right-side bunker. Standing in the bunker with the ball in the dormant grass at nearly waist level, he choked up on an 8-iron and slashed a shot 80 yards down the fairway. That left him 170 yards to the green and he hit safely to the middle.