Ogletree was unstoppable at Close House, near Newcastle, shooting a final round seven-under-par 64 – the joint lowest round of the week – to reach 16 under and finish ahead of second-placed Ian Poulter from England, who closed with the same score.

India’s Anirban Lahiri also excelled, carding a 68, to take sole possession of third, one back from Poulter.

This is Ogletree’s third convincing International Series victory – he triumphed in Qatar by three this year, and by four in Egypt last season – and it consolidated his lead on both the Asian Tour and International Series Order of Merits.

“I don't think I could hit it much better than I did this week,” said the 25-year-old, who banked US$360,000.

“The greens were super bumpy so it's hard to tell exactly how my putting was, but I was pleased with how I played and my speed control coming down the stretch today was awesome. And it was nice to see a few putts go in, so we're just gonna keep trying to get better every week.

“My game is in a really good spot against a world-class field, super honoured to play the way I did.”

Andy Ogletree was unstoppable in the final round. PHOTO: Asian Tour.

He had a one-stroke advantage at the start of the day, and after brushing off a bogey on the opening hole he settled into his work and birdied the 2nd, 4th, 5th and 8th holes.

He uncharacteristically missed a five-foot putt for par on the 9th which saw him make the turn with a three-shot lead, before he stormed home unchallenged with two birdies and an eagle on the back nine.

His success is even more remarkable considering his last event on the Asian Tour was the International Series Vietnam in April, having focused on the LIV Golf League thereafter – the multi-million-dollar circuit he will play on full-time next year if, as looks likely, he finishes first on the International Series merit list.

Poulter, playing in the fifth from last group, narrowed Ogletree’s lead to five after he eagled the par-5 16th hole, only to see the American frontrunner do the same soon after.

Poulter, attempting to win for the first time in five years, said: “I just kind of found the key to hitting a few putts on these greens, which I didn't have the first three days. And you know, when you do that and you play good golf like I played the first three days, then you're going to be able to make some birdies. And that's what I did today. I made quite a few ‘birds’, and it was 16 feet on 16 there, and rolled that one in.”

Lahiri finished second in the International Series Vietnam and backed that up this week.

“Very, very pleased,” the 2015 Asian Tour Order of Merit champion said.

“I think that was probably the top-three ball-striking round of the year for me, I think I would rate this round better than my Saturday at Bedminster and better than Adelaide. I think I was very, very happy with how I swung it. My control of the ball in the air, my distance control everything was spot on. I drove it phenomenally. I think three-under is probably the absolute worst score I could have shot today. Honestly, if my dad putted for me today, we would have shot a 65!”

Amateur golfer Luke Poulter, who plays college golf at the University of Florida and is the 19-year-old son of Ian Poulter, completed an impressive tournament by closing with a 71, to finish in a tie for 22nd, on level-par.

“It's been amazing,” he said.

“I beat him [Ian Poulter] one of the days, it was really cool, but my main goal was to try and beat him this week, but he got me by nine!”

The Asian Tour journeys north of the border next week for the inaugural St Andrews Bay Championship at Fairmont St Andrews.