(REUTERS) - German veteran Alex Cejka sank a 15-foot birdie putt at the first extra hole for victory in a five-way play-off at golf's Puerto Rico Open on Sunday.

The 44-year-old outlasted Americans Jon Curran, Tim Petrovic and Sam Saunders and Argentinian Emiliano Grillo to seal the win.

They all finished at seven-under-par 281 at the Trump International course in Rio Grande to force the first five-man play-off on the PGA Tour since Phil Mickelson won the 2006 BellSouth Classic.

Curran and Grillo both bogeyed the par-five 18th in regulation to fall into the play-off.

Cejka, who shot a closing 69, collected US$540,000 (S$744,000) for his first win on the PGA Tour.

"The first victory is always the toughest, so I'm glad it's done," he told reporters, admitting he was surprised that Curran and Grillo both butchered the 72nd hole. "I had everything ready to go to the airport and almost was very satisfied with a third-place finish.

"Suddenly it changed, and here I am. And I'm very, very pleased. I don't think I'm going to sleep tonight."

A four-time winner on the European Tour, he endured a 12-year global drought before winning on the secondary US-based Web.com tour in 2014.

"At least I can say I played PGA Tour for a long time and I won. That's a good sentence I can use when I retire."

Cejka started the final round strongly, with four birdies in the first six holes, but did not pick up another stroke the rest of the way, with his lone bogey coming at the par-three 11th.

Grillo, playing on a sponsor exemption, perhaps had most to rue of the play-off losers after missing a short par putt for victory at the 72nd hole.

Saunders, the grandson of the legendary Arnold Palmer, also had cause for regret after missing a makeable birdie putt in the play-off.

Overnight leaders Chris Smith and Scott Brown both shot 73 to finish two strokes off the pace, equal 10th.