Carlos Ortiz held off Dustin Johnson and Hideki Matsuyama to win the Houston Open for his maiden victory on the PGA Tour.

Ortiz carded a five-under 65 in the final round at the Memorial Park Municipal Golf Course in Texas to finish at 13 under.

The 29-year-old finished two strokes clear of Johnson (65) and Matsuyama (63) for his first PGA Tour triumph.

Ortiz's win came in his 118th start, while he joined Victor Regalado and Cesar Sanudo as the only Mexicans to win a PGA Tour event.

During a bogey-free final round, Ortiz secured his success in style with a 22-foot birdie putt on the 18th.

Making his first start since the U.S. Open after recovering from coronavirus, world number one Johnson fell short despite continuing his charge with a final-round 65.

Johnson struggled to a 72 in the opening round, and that proved costly as he finished with three straight rounds of 66 or better, having narrowly missed a 21-foot birdie putt on the 18th that would have put him in a share of the lead.

Matsuyama produced the equal best round of the day as his 63 saw him finish alongside Johnson in a tie for second.

Talor Gooch (63) was outright fourth at nine under, a shot ahead of Brooks Koepka (65) and Sepp Straka (69).

Koepka posted back-to-back 65s, marking the second time in his career he has posted consecutive rounds of 65 or better in the third and final rounds, in positive signs ahead of next week's Masters.

Mackenzie Hughes (63), Tyrrell Hatton (65), overnight leader Sam Burns (72) and Jason Day (71) ended up at seven under.

Sam Burns retained the lead at the Houston Open, but Jason Day and Dustin Johnson are among those in contention.

Burns, 24, holds a 54-hole lead for the first time in his PGA Tour career after carding a two-under 68 at the Memorial Park Municipal Golf Course.

The American moved into nine under, a stroke ahead of Australian Day (67) and Mexican Carlos Ortiz (67).

Burns, who has two top-10 finishes this year, had an eagle, four birdies and four bogeys during his third round.

Without a top-10 finish since the US PGA Championship in August, Day is in contention after a third straight round in the 60s.

Sepp Straka (66) is outright fourth at seven under, a shot ahead of Johnson.

World number one Johnson, playing for the first time since the U.S. Open, carded a second straight 66, having opened with a 72.

Johnson produced a bogey-free third round, making four birdies – including a 17-footer at the fifth.

Aaron Wise (69) and Dawie van der Walt (69) are at five under, one shot ahead of Hideki Matsuyama (66), Michael Thompson (67), Shane Lowry (68), Tony Finau (68) and Patton Kizzire (70).

Brooks Koepka showed some better form ahead of next week's Masters, the American firing a five-under 65 – the equal best round of the day – to move into a tie for 13th at three under.

Sam Burns earned a two-stroke lead at the halfway stage of the Houston Open, where former world number one Jordan Spieth's struggles continued after another missed cut.

Burns – eyeing a maiden PGA Tour title – carded a five-under-par 65 to top the leaderboard following Friday's second round at Memorial Park Municipal Golf Course.

The 24-year-old American was flawless as he holed five birdies without dropping a shot in Texas, where round two was suspended due to darkness.

Burns recorded his second career lead/co-lead on Tour – his first came at the 2020 Safeway Open following the second round.

Jason Day (68), another former world number one, and Mexican Carlos Ortiz (68) are Burns' nearest challengers at five under.

Overnight leader Brandt Snedeker dropped down into a tie for fourth after his second-round 71, alongside Dawie van der Walt (66), Corey Conners (67), Aaron Wise (66) and Patton Kizzire (67).

World number one Dustin Johnson regrouped to post a four-under-par 66, enough for a share of 14th position – five shots off the pace.

In action for the first time since the U.S. Open after recovering from coronavirus, bounced back from a first-round 72 with six birdies and two bogeys.

Four-time major champion Brooks Koepka survived to qualify for the weekend courtesy of his 70.

Ahead of this month's reschedule Masters, Koepka is tied for 46th at two over, just two strokes above the projected cut.

Spieth's tournament came to an end following back-to-back rounds in the 70s – his third missed cut in five outings.

The American star has not won since the 2017 Open Championship.

The likes of Sergio Garcia (71) and Phil Mickelson (73) also failed to make it to the weekend.

Mickelson finished nine over after shooting an eight on the par-three ninth hole – the highest score on a par three of his PGA Tour career.

Brandt Snedeker carded a five-under 65 to take a two-stroke lead as the first round of the Houston Open was suspended on Thursday.

The American has struggled for form in 2020, but made a fine start at Memorial Park Municipal Golf Course in Texas.

Snedeker, who has just one top-10 finish in 17 events this year, mixed six birdies with a bogey in the opening round.

He holds a two-shot lead over Cameron Davis, Michael Thompson, Scottie Scheffler, Harold Varner III, Carlos Ortiz and Jason Day, who all opened with 67s.

The last time Snedeker held the 18-hole lead or co-lead on the PGA Tour was after his 59 at the 2018 Wyndham Championship, which he won.

Only nine players were yet to complete their rounds when it was suspended due to darkness.

On what is a congested leaderboard chasing Snedeker, Adam Long, Kevin Streelman, Sam Burns, Talor Gooch, Sepp Straka, Scott Piercy, 2007 champion Adam Scott and Greg Chalmers all opened with 68s.

In action for the first time since the U.S. Open after recovering from coronavirus, Dustin Johnson battled to a two-over 72.

Johnson is back in a tie for 63rd, and he is joined in that group by Brooks Koepka and defending champion Lanto Griffin.

Jordan Spieth's struggles continued as he opened with a three-over 73.

With just two top-10 finishes in 18 events this year, Spieth was three under through 12 holes, only to make two double bogeys and two bogeys.

Martin Laird (72) delivered one of the day's highlights with a hole-in-one at the second hole.

Dustin Johnson remains unsure how he contracted coronavirus and the world number one said just where his game was at was "undetermined".

Johnson, 36, tested positive for COVID-19 last month and has been out of action since the U.S. Open.

The American is preparing for his return at the Houston Open, beginning on Thursday, but said he was still unsure how he got infected.

"The only good thing that came out of this is I know I'm playing next week at the Masters," Johnson told a news conference.

"I'd be nervous, for sure. It's one of those things… I had no idea where I got it from. Obviously, I thought about it, tried to figure it out. I had every person that I'd been around, people that had been in my house, any person that I'd come in contact with – my friends, family, people that work for me – every single one of them went and got tested. Not Paulina, the kids, everybody, not one person had it.

"The only thing I can figure is I got in Vegas… I don't even know how I got it there. That's the only place I could have got it because not one person I was around had it… and nobody got it either from me."

Johnson has enjoyed a fine 2020, claiming two wins and seven other top-10 finishes in 16 events.

The 2016 U.S. Open champion said he was happy to be back after a longer-than-expected break.

"My health is good. The state of my game is undetermined," Johnson said.

“It wasn't that bad as far as I didn't get really sick. I felt like I had a cold for a few days, and after that, I was pretty much asymptomatic. A little fatigue and things like that, but I couldn't really figure out if that's cos' I was stuck in a hotel room for like 11 days, or if it was COVID that made me feel that way.

"Really, I didn't leave the room for 11 days. I was just laying around kind of doing nothing. It was almost one of those things, I was waiting to get sick because you know you have it, and you're sitting there just… For me, it was very mild and obviously I'm very thankful for that.

"It definitely puts a wrench in your plans and what you're trying to do. Obviously, I was planning on playing at Shadow Creek and Sherwood, those two events. I had a lot more time off than I was planning on."

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