American Hunter Mahan closed with a six-under 65 and overcame a final round challenge from South Korea's Yang Yong-eun to win the Phoenix Open.
PGA champion Yang, who started the day six strokes behind the lead, had also fired a 65 and was in control of the tournament before he threw away a two-stroke advantage on the 17th with a costly bogey when he pulled his drive into the water.
Mahan made a 14-foot birdie putt on the raucous 16th hole then capped his round with a six-footer for par to conclude at 16-under, one stroke better than fellow American Rickie Fowler, and claim his second Tour title.
Australia's Mathew Goggin, Chris Couch and Charles Howell III tied for fourth at 13-under. Twice champion Phil Mickelson finished with a 67 to get to nine-under and a tie for 24th and is still looking for his first win of the year.
Overnight leader Brandt Snedeker bogeyed three of his first seven holes and was never a factor as he finished with a seven-over 78 and dropped into a tie for 43rd.
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