Tony Finau collected the third win from his past seven PGA Tour starts as he cruised to a convincing four-stroke triumph at the Houston Open on Sunday.

Finau's four-stroke lead was the same buffer he held coming into the final trip around Memorial Park Golf Course after posting rounds of 65, 62 and 68.

After winning back-to-back events in July at the 3M Open and the Rocket Mortgage Classic, Finau – who finished with a final-round score of 16 under – has now won more titles in his past seven starts than he did in his first 211 to begin his career (two).

Speaking to NBC after stepping off the final green, Finau admitted he was not comfortable in such an unfamiliar position with a giant lead.

"It feels great – honestly, on the first hole I didn't know if I had it in me today," he said. "It was one of those days where I just fought, and fought, and I made a lot of nice putts on the front-nine to calm me into things.

"I've never been in this position before, with that big of a lead with nine holes to play. A lot of new nerves, I would say, but overall as the round went on I felt better, and I'm just happy to get the 'W' today.

"I've always had belief, but the confidence when you win is contagious. I've always been a very hopeful person, I work extremely hard on my body and my game, and now I'm starting to bear the fruits of that labour. It feels amazing to have that be the case.

"You never know what's going to happen in this game, but you always try to put your best foot forward, that's what I've done over the years, and I'm starting to put together a pretty full-package game."

Alone in second place at 12 under was Tyson Alexander, who had never previously finished better than tied for 44th in his seven PGA Tour starts.

Ben Taylor was the only player at 11 under in third, and there was a further three-stroke gap to the rest of the field.

World number two Scottie Scheffler finished tied for ninth at six under for his second consecutive top-10 finish, while former world number one Jason Day was one further back.

Tony Finau was solid without being spectacular as he carded a two-under round on the third day at the Houston Open to maintain his four-stroke lead on Saturday.

Finau led by four shots at the halfway point after 10 birdies in Friday's eight-under 62, but the American kept it steady with a bogey-free round that included only two birdies at Memorial Park Golf Course on Saturday.

The main contenders, Patrick Rodgers and Alex Noren, both carded three-over 73s to drop well off the pace at six-under overall but Englishman Ben Taylor emerged into second on moving day.

Taylor looms as the only potential challenger for Finau (15-under overall) ahead of the final day, shooting six birdies in his five-under round-of-the-day 65 to move up the leaderboard into 11-under overall.

The Englishman buried a 21-foot closing birdie putt to finish the day on a high and keep the pressure on Finau.

Taylor is three strokes clear of the next best, with three players tied at eight under; Justin Rose, Wyndham Clark and Tyson Alexander. Gary Woodland and Joel Dahmen are seven under.

World number two Scottie Scheffler could not mount any kind of challenge, with a double bogey on the 16th hole followed by a bogey on the 18th leaving him with one-over 71 to be three-under overall.

Last year's Masters champion Hideki Matsuyama withdrew after nine holes on Saturday due to a neck injury but was not in contention.

Tony Finau enjoyed a spectacular second round at the Houston Open, shooting an eight-under 62 to open up a four-stroke lead on the chasing field heading into the weekend.

Finau was the joint-leader after the opening round, and he went even better in his second trip around Memorial Park Golf Course, sinking 10 birdies to go with two bogeys.

Fresh off his first PGA Tour season with multiple wins – including a career-high four top-two finishes – Finau is in prime position to make a run at his fifth title.

Alone in second at nine under is Patrick Rodgers, who followed his opening 68 with an impressive 63, as only he and Finau completed rounds of 63 or better before the weather arrived.

Joint-leader from the first round, Alex Noren is one further back at eight under, although he had three holes remaining when play was called off.

Noren is joined by Tyson Alexander, while China's Carl Yuan and America's James Hahn are the only players tied for fifth at seven under.

There is a seven-man logjam tied for seventh at six under, but Aaron Wise and Trey Mullinax will have their sights set higher before they begin their third rounds, with six holes still to play.

After a disappointing even-par 70 to open his week, world number two Scottie Scheffler is enjoying a five-under round through 13 holes, sinking an eagle on the par-five 12th right before his round was interrupted.

Former world number one Jason Day will likely see the weekend as he is tied for 37th at two under with six holes remaining, while his playing partner and former Masters champion Hideki Matsuyama is one further back sitting right on the edge of the cut-line.

Tony Finau is one of four players with a share of the lead after finishing Thursday's opening round of the Houston Open with a five-under 65.

Finau is joined by fellow Americans Aaron Wise and Tyson Alexander, as well as Sweden's Alex Noren, although Alexander still has one hole to play as the late-starters had their rounds cut short when darkness halted the action.

Ranked 15th in the world, Finau caught fire on his second nine, posting five birdies from his final eight holes to fly up the leaderboard.

Canadian duo Taylor Pendrith and Mackenzie Hughes headline the logjam tied for fifth at four under, with England's Justin Rose part of the 10-player group one further back at three under.

It was a rough day out for the big names in the field, with world number two Scottie Scheffler and former Masters champion Hideki Matsuyama shooting even-par 70s to finish the round tied for 53rd.

That pairing at least remain in the hunt, which is more than can be said for last week's winner of the World Wide Technology Championship at Mayakoba, with Russell Henley struggling on his way to two over.

Another former Masters champion had a tough time, with Danny Willett unlikely to make the cut after his five-over 75, while world number 12 and recent Presidents Cup debutant Sam Burns had a day to forget, shooting seven over.