Seamus Power posted an impressive final-round 67 to finish inside the top ten at the Rocket Mortgage Classic on the PGA Tour.

The Waterford native ended up in a share of eighth place following a flawless five-under round, which included five birdies and no bogeys.

The 2016 Olympian finished on 15-under par for the tournament, three shots off the winning total of 18-under, which led to a three-way play-off including Troy Merritt, Cam Davis and Joaquin Niemann, with Australian Davis winning his first PGA Tour title

Niemann was eliminated after the first extra hole as Davis and Merritt went head-to-head for four additional holes before the Australian secured the win on the fifth play-off hole.

Davis missed would-be tournament-winning putts on all five playoff holes, each of them left-to-right putts of medium length. But after his birdie try at the fifth hole (No. 15) slipped by the cup, Merritt missed a 6-foot par putt that would have extended the battle.

The 26-year-old went five-under on the back nine to shoot a 5-under 67 and charge into play-off position. Davis' third shot from the greenside bunker on the par-517th took two hops, glanced the pin and dropped for an eagle that tied him for the lead.

"I didn't have anything to lose so it wasn't like I was nervous on 17, I was just trying to hit a good bunker shot," Davis said. "Picked my spot and just flew it a little bit past it, jammed the flag. I mean, I don't know, those I guess are the sort of things that need to go your way if you want to keep pushing forward."

He followed that with a birdie on the last hole to move to 18-under 270 for the event, where 54-hole co-leaders Niemann and Merritt later joined him.

What started as a three-way playoff was whittled down to two in short order when Niemann made bogey on the first hole, No. 18. It was Niemann's first bogey in 77 holes dating back to last week's event, and it couldn't have come at a less ideal moment.

"I hit the best driver I hit of the whole tournament, I think," Niemann said of the playoff hole. "I didn't have the best number to attack the hole. I want to take a little bit off of the wedge and I just double-crossed it a little bit and that's why it went a little bit too past the hole.

"Then it was an impossible shot out of the rough back there and almost hit the pin, almost could get pretty lucky there. Then I hit a good putt, it just wasn't enough."