Brian Gay won the Humana Challenge on Sunday for his fourth PGA Tour title, beating Charles Howell III with a 5 1/2-foot birdie putt on the second hole of a playoff. Gay closed with a 9-under 63 on PGA West's Arnold Palmer Private Course to match Howell and Swedish rookie David Lingmerth at 25-under 263. Howell shot a 64, and Lingmerth had a 62.