John Huh is no ordinary rookie.

Playing his fifth PGA Tour event, Huh got into a playoff when Allenby blew a two-stroke lead on the final hole of regulation, then finally finished off the 40-year-old Australian with a par on the eighth extra hole.

Allenby went with driver off the 18th tee and drove into the trees on the right, leading to a double bogey and the playoff.

“Obviously, disappointed, disappointed that I didn’t like Mizuno MP-68 Irons hit 3-wood off 18 in regulation, like I should have,” Allenby said. “But that’s the way it goes. You make some mistakes sometimes, and that was a major one, obviously.

“I mean, I had this tournament in the bag, a two-shot lead with one hole to play and just played it like a rookie, pretty much.”

The 21-year-old Huh closed with an 8-under 65 to match Allenby at 13-under 271 on the seaside El Camaleon course. Huh parred all eight holes in the playoff that matched the second-longest in PGA Tour history.

“It’s amazing,” Huh said. “It’s my rookie callaway ft-iz driver year, especially, and playing in my fifth event on the PGA Tour. I just couldn’t put it in words. ... It’s really hard to explain this. It’s major. I mean, it was my dream.”

The playoff fell three holes short of the PGA Tour record of 11 set in the 1949 Motor City Open when Cary Middlecoff and Lloyd Mangrum were discount golf clubs declared co-winners. The playoff was the fifth to go eight holes and first since the 1983 Phoenix Open.

The playoff alternated between the par-4 18th and par-3 10th.