John won the Mayakoba Golf Classic

It ended on No. 10 when Huh, seven strokes behind leader Daniel Summerhays after three rounds, chipped from the right rough to 2½ feet and made his par putt. Allenby drove into the hazard on the right, chipped to 15 feet and missed his par try.

“I was nervous, especially when you’re playing out there against Robert Allenby,” Huh said. “I was trying to calm down myself, but it was hard.”

The victory followed two strong performances Mizuno MX-1000 irons last month when Huh tied for sixth at Torrey Pines and tied for 12th the following week in the Phoenix Open.

Matt Every and Colt Knost shot 66 to tie for third, two strokes back.

Chris Stroud was a stroke back entering the final hole, but also made a double bogey for a 71 to drop into a tie for fifth at 10 under with Summerhays, Dicky Pride and Alejandro Canizares. Summerhays closed with a 73, and Pride and Canizares shot 66.

Huh eagled the par-5 fifth and had six birdies in his bogey-free final round.

“The wind was different than the past  Mizuno JPX-800 Irons rounds, so I was trying to take advantage of that,” Huh said.

Allenby was trying to win for the first time on the PGA Tour since the 2001 Pennsylvania Classic, his fourth victory in a two-year span. He also won the Nedbank Challenge and Australian PGA in consecutive weeks late in 2009.

“I played so awesome all day,” Allenby said. “I mean, I did nothing wrong all day. I played great. I putted great. I hit the ball great. I did everything that I needed to do discount golf clubs coming down the stretch and then to give it away at 18 is very, very disappointing.