Billy Horschel secured victory at the Memorial Tournament on Sunday, shooting an even-par 72 to finish four strokes ahead of Aaron Wise.

Horschel had a healthy buffer at the start of play on Sunday with a five-shot lead and kept it relatively steady, but had to come up with some big shots on the back nine to take the win.

After a bogey on the sixth, the 35-year-old got back to even with a birdie on the par-three 10th.

A bogey on the 12th took him back to one-over, yet a massive put on the par-five 15th for eagle gave Horschel a commanding lead.

It effectively shut the door on Wise, who had also birdied on 15, before he closed out the round with a bogey for a one-under 71.

It was Horschel's seventh tournament win on the PGA Tour, but his first with his family present. Greeted by them and tournament founder Jack Nicklaus after the win, Horschel spoke of the added significance of this triumph.

"It's special, it truly is," Horschel said after his round. "Jack's a legend of the game and to win his event, you've seen the guys who have won this event, just legends in their own right, it's pretty special.

"We joke about it in the family but my wife and my kids have never been to any of my victories. My parents have, and so, having a five-shot lead knowing that this was mine to sort of go out and win or lose, and having them here, I really wanted to win."

Horschel moved into the FedEx Cup's top 10 with the win, just 19 points behind Jon Rahm in ninth.

Excluding the 2021 WGC Match Play, defeating Scottie Scheffler in the final, this win is his first on the PGA Tour in a regular four-round format since the 2018 Zurich Classic.

Coming into Sunday with that five-stroke lead, Horschel was determined to maintain rather than extend that margin.

"I've watched Tiger play enough, and I wasn't around when Jack was playing in his heyday, but you knew he was unbelievable at course management," he said.

"He knew how to plot his way around a golf course and learn from those two, and understand, when you have a lead, you don't have to do anything special. You've just got to make sure you don't give any shots back.

"I did give some back and I was a little upset about it, but we just put the ball on the green, two-putting, trying not to do anything special and if I had to do something special, then I was ready for it. That eagle on 15 was huge."

Billy Horschel shot a blistering seven-under 65 on Saturday to secure a five-stroke lead heading into the final round of the Memorial Tournament.

Horschel shot another bogey-free round on Saturday to extend his streak to 44 consecutive holes, with his last coming on the 10th hole in the first round.

One year after Jon Rahm built a six-stroke lead coming into the Sunday at the Memorial, before having to withdraw due to a positive Covid-19 test, Horschel will have a chance to see off the field with a healthy buffer.

After chipping in for birdie on the opening hole, Horschel played incisively from there as the course firmed, zeroing in on the pin and not leaving himself with much work on the greens at Muirfield Village.

The 35-year-old will be going for his seventh tournament win on the PGA Tour, with his last victory coming at the 2021 WGC Match Play, defeating Scottie Scheffler in the final.

World number three Cameron Smith commenced with a one-stroke lead on Saturday but started slowly with bogeys from the bunker on the opening two holes.

He recovered from another bogey to open the back nine to finish on even par for the round, remaining on eight-under for the tournament.

The Australian is tied for second with Aaron Wise, who steadied after a fast start on the front nine to score a three-under 68 on Saturday.

A three-way tie for third between Daniel Berger, Francesco Molinari and Jhonattan Vegas sits a further stroke back.

Meanwhile, defending champion Patrick Cantlay sits on six-under along with another four players.

Cameron Smith continued his strong start to the Memorial Tournament on Friday, sitting alone atop the leaderboard on eight under after being one of three players to shoot under 70 on back-to-back days.

The Australian was in a six-way tie for the lead after round one, and pushed on well his second time around, finishing with just one bogey – on the sixth hole – which was sandwiched by birdies on the fifth and seventh.

Smith then birdied the par-five 11th, and the par-three 12th, showing his impressive touch over long and short distances, but where he really made his money was around the greens.

According to Data Golf, Smith had negative strokes-gained off the tee and with his approach shots in round two, but was second overall in strokes-gained around the greens (plus 3.55), trailing only Beau Hossler (plus 4.25). They gapped the field, with nobody else gaining more than plus 2.83 in that shot category.

Sitting one stroke off the lead is American Denny McCarthy and South Korea's Lee Kyoung-hoon, while one stroke further back at six under are round one's joint-leaders Davis Riley, Cameron Young and Luke List, along with Jhonattan Vegas and Billy Horschel.

McCarthy and Vegas joined Smith as the only players to shoot sub-70 in the opening two rounds.

Rory McIlroy headlines the group at five under in a tie for ninth, along with Francesco Molinari, still well within striking distance heading into the weekend.

A strong international group is at four under, including Canada's Mackenzie Hughes, Chile's Joaquin Niemann and South Korea's Im Sung-jae, and they are one stroke ahead of Ireland's Shane Lowry, Mexico's Abraham Ancer and American Will Zalatoris.

Jon Rahm and Corey Conners will still feel like they have a chance at two under, Max Homa and Xander Schauffele finished well inside the cut-line at one under, and Jordan Spieth shot a disappointing 74 on Friday to take an even par score into the weekend.

England's Aaron Rai – who was number one in strokes-gained off the tee on Friday – along with Australian Adam Scott finished right on the cut-line, making it through at two over, but Matt Fitzpatrick (three over) and Collin Morikawa (four over) were not so lucky.

World number three Cameron Smith headlines a six-way tie atop the Memorial Tournament leaderboard after Thursday's first round at Muirfield Village.

Smith is joined by American trio Luke List, Cameron Young and Davis Riley, as well as Canada's Mackenzie Hughes and South Korea's Lee Kyoung-hoon.

It is the largest leading group after the first round in tournament history, but they all got to their five-under 67 in different ways. 

Young finished the day second in average driving distance (316.8 yards), behind only Jon Rahm, while Lee, Hughes and Smith finished top-six in putts-per-green-in-regulation.

List was the only member of the leading group to finish with less than two bogeys, and Riley played an all-round game; top-15 in driving distance while being dialled in with his putter down the back-nine, going five-under from the 11th hole to the 17th.

US PGA Championship runner-up Will Zalatoris is part of the three-man group one stroke off the lead, while Max Homa and Canada's Corey Conners are in the logjam at three under.

A star-studded group finished with a two-under 70, including Rory McIlroy, Jordan Spieth, Xander Schauffele and Im Sung-jae, while Chile's Joaquin Neimann is with Collin Morikawa and Jason Day at one under.

Patrick Cantlay and Rahm were even-par, Mito Pereira will need a solid second round to make the cut after a one-over finish, and Hideki Matsuyama was handed his first career disqualification for using a wood with paint on its face – deemed illegal. He was three over at the time of the incident.

Hideki Matsuyama was disqualified from the Memorial Tournament midway through his first round on Thursday after breaching PGA Tour equipment regulations – the first disqualification of his career.

The 2021 Masters champion had just finished the ninth hole of a thus-far disappointing outing in Ohio, and would have made the turn at three-over after making three early bogeys. 

But Matsuyama, who won his first PGA Tour title at the 2014 edition of the tournament, was informed on the 10th tee that markings on the face of his three-wood breached equipment regulations.

Images showed what appeared to be white paint on the club face, which he used throughout his short outing on the course, leading chief referee Steve Rintoul to describe the club as "non-conforming".

Rintoul grouped with other officials to deem the three-wood in breach of equipment rule 4.1a, which states "a substance or any treatment can't be applied to the face of a club which could influence the flight of the ball, the spin, the loft or anything on the ball, how the ball performs".

The 30-year-old, who had never previously been disqualified in his nine-year professional career, refused to comment after being barred from completing his round.

Matsuyama tied for 14th in his unsuccessful defence of hi Masters title, having recovered from a neck injury to feature in Augusta, and will look to bounce back at the Canadian Open, which starts next Tuesday.

Patrick Cantlay defeated Collin Morikawa in a play-off to win the Memorial Tournament on Sunday.

Cantlay earned his second Memorial title, having also won the tournament in 2019, after Morikawa was unable to match his par putt on the first play-off hole.

A sudden-death shoot-out was needed at Muirfield Village Golf Club after Cantlay and fellow American Morikawa finished 13 under through 72 holes following final-round 71s.

It became a showdown between Cantlay and Morikawa on the final day after runaway leader Jon Rahm was forced to withdraw following a positive coronavirus test.

Defending champion Rahm was six shots clear of Cantlay and Morikawa in the third round before the duo were thrust to the top of the leaderboard.

"It's such a weird situation and so unfortunate because, me included, everyone knows it would be a totally different day today had that [Rahm's withdrawal] not happened," Cantlay said after his fourth PGA Tour triumph.

"There's nothing I can do about it and I just tried to work as hard as I could to reset and really get focused.

"I started off a bit shaky today but I really hit a lot of good shots coming in and it felt the same as when I won a couple of years ago. I felt calm and collected and it worked out."

Scottie Scheffler (70) finished two shots behind Cantlay and Morikawa, while Branden Grace (71) was a stroke further back as Patrick Reed and his three-under-par 69 earned him outright fifth at eight under.

Reigning U.S. Open champion Bryson DeChambeau (71), four-time major winner Rory McIlroy (72) and former world number one Jordan Spieth (73) ended the event in a share of 18th position at one under.

Bryson DeChambeau made reference to his potential financial gain through the PGA Tour's 'Player Impact Program' as his feud with Brooks Koepka continued at the Memorial Tournament.

Koepka is not playing at the event at the Muirfield Village Golf Club this week, but that has not prevented his rivalry with DeChambeau from escalating further.

A group of spectators were reportedly ejected from the tournament this weekend for shouting Koepka's name as DeChambeau lined up his shots.

Koepka responded with a video on his social media page promising free beer to 50 people who had their "time cut short" or faced "any trouble".

DeChambeau, for his part, appears keen to avoid an argument, explaining: "I think that's something that the tour needs to handle. It's something I can't control.

"I tried to take the high road numerous times, and I think that, from my perspective, I'll continue to keep doing so and people are going to do what they want to do. So, it is what it is."

However, DeChambeau also hinted at how he could benefit from the back and forth, which came to the fore after a clip of an unpublished interview with Koepka from the US PGA Championship went viral.

The clip appeared to show Koepka become distracted as DeChambeau walked past talking. He swore, cut off the interview and said: "I lost my train of thought hearing that bulls***."

DeChambeau said on Saturday: "If he keeps talking about me, that's great for the PIP fund."

The fund rewards 10 players from a $40million pot based on various metrics including their popularity on search engines and social media.

DeChambeau memes posted by legendary NFL quarterback Tom Brady in the past fortnight should certainly help in that regard.

The interjections from watching fans in Ohio were less welcome, but DeChambeau praised the spectators following Saturday's third round.

"I wanted to say the fans were awesome today," he said. "They came out, supported me. Obviously, you're going to have people saying things, but it doesn't rile me up, it doesn't affect me or anything like that.

"It's great banter, it's fun, but the fans were awesome, the golf course is in great shape."

Memorial Tournament runaway leader Jon Rahm has been forced to withdraw from the event after testing positive to COVID-19 on Saturday.

Rahm had carded back-to-back rounds of 64 and 65, including a hole-in-one on Sunday, to lead by six shots at 18-under from Collin Morikawa and Patrick Cantlay at 12-under.

However, the Spanish world number three, who was asymptomatic, was informed by officials immediately following his round in dramatic scenes that he had tested positive and would be required to pull out of the event.

Rahm was seen on the TV broadcast being informed of the news by an official, reacting by stooping in anguish and emotionally putting his hands to his face, before walking off the course shaking his head.

The PGA TOUR put out a statement clarifying that Rahm had been subject to contact-tracing protocols as he had come in close contact with a person who was COVID positive.

The statement said: "Rahm has tested negative every day, but his most recent test – which was performed after the conclusion of his second round (rain delayed) and before the start of his third round – returned positive at approximately 4:20 p.m. ET while Rahm was on the golf course.

"The PGA TOUR’s medical advisor requested a confirmatory test on the original sample, which came back at 6:05 p.m. ET, and was also positive.

"The PGA TOUR’s medical advisor notified Rahm immediately upon completion of his round, and under TOUR protocols, he will be withdrawn from the competition. Rahm is now in isolation, and in accordance with CDC guidelines, he will need to remain in isolation through Tuesday, June 15.

"While this is an incredibly unfortunate situation, throughout 50 events since the PGA TOUR’s Return to Golf, there have been only four positive tests (including Rahm) within competition; Rahm is the first positive, asymptomatic case as part of the TOUR’s routine, contact-tracing protocols."

Rahm had been the equal leader at eight-under on Friday after the second round was suspended due to darkness, alongside Cantlay.

The Spaniard raced away with 11 birdies on Saturday as well as a hole-in-one on the 16th to move into the outright lead as he completed his second round.

Morikawa and Cantlay suddenly find themselves in the lead, with the former having shot a six-under 66 on Saturday with eight birdies.

Cantlay finished with a four-under 68 to sit equal with Morikawa at 12-under, with four birdies in his round including sinking a 22-foot putt on the 18th.

South African Branden Grace and American Scottie Scheffler are both tied for second at nine-under, with Max Homa next best at six-under.

Defending champion Jon Rahm joined Patrick Cantlay at the top of the leaderboard before the second round of the Memorial Tournament was suspended due to darkness.

The opening round was hit by storms at Muirfield Village, where most of the field managed to complete their second rounds on Friday.

Rahm – eyeing back-to-back Memorial titles – was through 13 holes when play was called for the day, the Spanish star level at eight under alongside Cantlay.

Cantlay had posted a five-under-par 67 to surge to the top of the standings in Dublin, Ohio.

The 2019 champion, Cantlay played 33 holes on Friday to be tied for the two-stroke lead through 36 holes, ahead of fellow American Scottie Scheffler (71).

Carlos Ortiz (68), Max Homa (through 14), Xander Schauffele (through 12) and Rickie Fowler (through 11) ended the day three shots off the pace at the PGA Tour event.

Overnight leader Collin Morikawa completed 12 holes but slipped down to a tie for eighth at four under, alongside the likes of Masters champion Hideki Matsuyama.

Former world number one and three-time major champion Jordan Spieth recorded a five-under-par 67 to bounce back from his first-round 76 – the American improving to one under.

Reigning U.S. Open champion Bryson DeChambeau also completed his round – an even-par 72 – to be seven strokes behind Rahm and Cantlay but it was a testing day.

DeChambeau was taunted by fans amid his ongoing feud with fellow star Brooks Koepka, with approximately 10 spectators ejected.

There is no love lost between DeChambeau and Koepka, particularly after footage of the latter emerged during a post-round interview at the US PGA Championship.

In a leaked viral video, four-time major champion Koepka was seen rolling his eyes at DeChambeau and cursed in frustration during the interview.

After Friday's second round, DeChambeau said: "I think it's absolutely flattering what they're doing. They can keep calling me that all day if they want to, I've got no issue with it.

"When you look at it, to most people it's they think it's a distraction, but I grew up learning how to deal with that stuff and I honestly thought it was flattering.''

On Koepka – who is not playing this week – DeChambeau said: "Look, I've got nothing against him. I've got no issues at all. If he wants to play that game, that's great. I'm going to keep trying to play my best game and when it comes down to it, when somebody's that bothered by someone else it is flattering."

Meanwhile, four-time major champion Rory McIlroy shot back-to-back 72s to be even par.

Collin Morikawa carded a six-under-par 66 to claim a one-stroke lead before bad weather halted the opening round of the Memorial Tournament.

Thunderstorms forced a weather-hit day one to be suspended at Muirfield Village, where Morikawa managed to set the early pace before play was stopped on Thursday.

Morikawa – last year's US PGA Championship winner – was almost flawless in Dublin, Ohio after holing seven birdies and just one bogey.

A run of three consecutive birdies and four in five to start his back nine sent Morikawa to the top of the leaderboard, just ahead of fellow American Adam Long.

"It was definitely the rain," Morikawa said. "The greens were soft enough and they're receptive. But you have to hit the fairway. Out here, wet rough, it's not going to help when the rough is pretty long.

Bo Hoag, Nick Taylor, Xander Schauffele and Rafa Cabrera Bello also completed their rounds and ended the day two strokes off the pace, while defending champion Jon Rahm, Justin Thomas and Rickie Fowler are among a group a shot further back at three under.

Reigning U.S. Open champion and 2018 Memorial Tournament winner Bryson DeChambeau – gearing up for his upcoming title defence at Torrey Pines Golf Course in San Diego this month – was two under through three holes at the time of the suspension.

Former world number one Jordan Spieth also completed three holes – one under – when play was called off, while Masters champion Hideki Matsuyama, who won the PGA Tour event in 2014, did complete his round following a one-over-par 73.

Four-time major champion Rory McIlroy will return to finish his round early on Friday after going one over through two holes in wet conditions.