LA QUINTA, Riverside County — 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. 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 with his ball perched on the front lip of a right-side fairway bunker. Kuchar had a two-stroke lead with four holes to play Saturday, but bogeyed three of the last four holes in the third round to fall a stroke back. The 32-year-old Wake Forest alum 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. 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.