Marcus Armitage produced a stirring performance in the final round of the European Open to claim his first European Tour title.

The Englishman shot a seven-under-par 65 to finally break his duck at the age of 33, winning by two strokes at Green Eagle Golf Courses in Hamburg.

Going into round three of a tournament reduced to 54 holes because of quarantine restrictions for players, caddies and staff from the United Kingdom, Maverick Antcliff and Matthew Southgate held a share of the lead.

Armitage was four shots behind but surged to the top of the leaderboard in style as Antcliff slumped to a three-over 75 and Southgate had to settle for a closing 71.

He shot a five-under 29 on the front nine, including an eagle at the par-four seventh, and carded three birdies in four holes on the back nine at the 11th, 12th and 14th.

His sole blemish came at the par-five 16th, but he recovered to save par at the 17th as an excellent chip from thick rough left a five-foot putt.

Compatriot Southgate's hopes were ended when he sent his tee shot at the 18th into the water, while Darius van Driel could not produce the eagle he needed at the last to force a playoff.

Southgate and Van Driel each finished two strokes adrift, along with Thomas Detry and Edoardo Molinari, as Armitage fulfilled a lifelong dream and qualified for the U.S. Open at Torrey Pines next week, which will mark only his second major appearance, in the process.

"I'm an emotional guy, I'm struggling to keep a lid on it here," said a tearful Armitage. "I was just trying to breathe and be calm, not touch my phone because that will be going berserk.

"But then you start thinking about everybody at home like my fiancee. Twenty years ago I lost my mum and I've dreamt about this since that day, being a winner, and you have days where you think it might not happen but I just stuck at it.

"Today is a great day and I'm sure she would be proud, and everybody in my team that's helped me – this one's for me. All those days on my own dealing with life and I'm sure a lot of people do, all those lonely days on my own working on my dream and I think I've got to take a lot of credit for it myself."

Maverick Antcliff and Matthew Southgate both have designs on clinching a first European Tour title on Monday as they share the lead at five under par heading into the final day of the European Open in Hamburg.

Antcliff enjoyed a particularly impressive second round at the Green Eagle Golf Courses on Sunday as he shot a four-under 68, one better than Southgate, to haul himself into contention at the top.

Both men were understandably flowing with confidence afterwards, with Southgate suggesting his excellence off the tee has been decisive.

"The fairways are narrow for everyone and I've thought for a while that I'm one of the best drivers of the ball in the world, so [I'm] just trying to have positive thoughts, let it go, don't steer it from the tee and it's worked through 36 holes," Englishman Southgate told the European Tour.

"There's a lot of power players out here and when you play with guys who hit it 20-30 yards offline and they can get away with it, it's tough to compete, but when the rough is up and the bunkers are there and the fairways are narrow, I think it makes it a level playing field and your skill sets have got to stand up to the test."

Firing himself up, Australian Antcliff said: "I'm hitting fairways, greens – if you get a good number or angle, take advantage of it.

"Keep doing the same. Good golf gets you into good positions, keep doing that, good results happen."

Thomas Detry led after the first round on Saturday with a 68 of his own, but the Belgian was unable to follow that up with another sub-par outing as he carded a one-over 73, with bogeys on the first two holes and a double-bogey on the 10th difficult to recover from.

Nevertheless, Detry is one of six players within two shots of Southgate and Antcliff, though of them all Edoardo Molinari will be the most confident of usurping the leaders.

The Italian enjoyed the best round of the tournament so far with a glorious seven-under 65 that included seven birdies and an eagle, making his disappointing 75 from the previous day a distant memory as he moved to four under for the tournament alongside Dutchman Darius van Driel and Scotland's Scott Jamieson and David Law.

Thomas Detry launched an early assault on the European Open with a sublime back nine in Saturday's first round, at odds with an underwhelming effort from defending champion Paul Casey.

The event returns this weekend having been cancelled last year due to the coronavirus pandemic.

But 2019 winner Casey soon found himself facing an uphill struggle in his bid to defend a European Tour title for the first time in his career.

Both Englishman Casey and Belgian Detry – without an honour on the European Tour – started from the 10th and they each reached the turn one over par.

From there, though, their fortunes differed drastically.

Detry made seven birdies across a stunning stretch, his progress checked only by a disappointing double-bogey at the third – "one of the easiest holes," he said – that meant he carded a four-under 68.

That was enough for the outright lead, ahead of Ashun Wu, Alexander Bjork, David Law and Ashley Chesters – all a single shot back.

On the other hand, Casey stumbled to a dismal three-over 75 as he failed to add to his early birdie at the 11th and instead dropped two more shots.

Yet his was far from the worst round of a former champion, as 2018 winner Richard McEvoy had a triple-bogey and three doubles en route to an 84.

Alexander Levy has twice played in a play-off for the title – winning in 2016 but losing at Green Eagle the following year – yet is highly unlikely to feature in the running again in 2021 after his 80.

Ross Fisher, beaten by Levy in 2016 having taken the championship eight years earlier, was a shot worse off at nine over.

Those struggling stars might look to Detry for inspiration, but the leader feels the brutal Hamburg course suits his game.

"It's completely different, it's very major," he said. "I played the US PGA two weeks ago and it's a similar approach.

"You have to drive it on the fairway otherwise it's really penalising. In a way, that’s golf that suits me a bit more.

"I tend to struggle on easy courses where you're forced to make birdies otherwise you're losing ground, and it's a completely different approach on this golf course."

Bernd Wiesberger set his sights on the Ryder Cup after retaining his Made in Himmerland title with a five-shot victory in Denmark. 

The Austrian, who led after each round, closed with a nerveless 64 to finish on 21 under and win his eighth European Tour event.

Guido Migliozzi's 63 on Sunday put him second on 16 under, as Richard Bland, Jordan Smith and Jason Scrivener were a stroke further back.

With four tournament triumphs since the start of the 2019 season, Wiesberger is primed to jump back into the top 50 in the world rankings.

That fine form makes him a strong contender to be included in Padraig Harrington's European team at Whistling Straits this year.

And a delighted Wiesberger is daring to dream of a debut in the team event after completing his first successful title defence.

"It's unbelievable," Wiesberger told the European Tour website. "I've had seven chances [to defend a title] – I wasn't successful the first six.

"I've said it all week, I really like it here. Playing here is good for my confidence especially after a couple of tougher weeks, so it's a special place for me.

"It brings out the best in me. I got it going when I needed to so really enjoyable."

On the possibility of earning a maiden outing at the Ryder Cup, he added: "There's a lot of golf to be played. First of all I really wanted to have a good week and start playing better golf again.

"This week really clicked for me, had a couple of good breaks on the way as well.

"[I've] got to keep playing good golf, but I would like to put my name in the vicinity of one of those spots.

"First things first, I need to play some more tournaments like this week and it will sort itself out."

Former world number one Jordan Spieth said he would not be surprised if this week's US PGA Championship winner Phil Mickelson had another major title in him.

Mickelson, 50, made history as the oldest major winner on Sunday when he triumphed at the US PGA Championship at Kiawah Island in South Carolina, claiming his sixth career major title.

The American's major victory in the twilight of his career was similar to golf greats Tiger Woods at the 2019 Masters and Jack Nicklaus at the 1986 Masters.

Spieth was full of praise for his childhood hero and long-time mentor, when speaking ahead of this week's Charles Schwab Challenge at the Colonial Country Club in Texas.

"It seems like all the great ones have that one left at the end," Spieth said.

"I know he'll probably tell you, he thinks he's got more than one left. I don't think anybody will doubt him after this one, but I think it's just wild. I think it's incredible."

The 27-year-old, who has won three major titles, said he watched on in awe as Mickelson triumphed on Sunday for his first major victory since 2013.

"I thought it would be very, very difficult," Spieth said. "He hadn't been in contention in quite a while on the PGA Tour against the guys he was in contention with.

"I know he's won many times on the Champions Tour… I think that might have been something that had been helpful for him as he's coming down the stretch.

"It's just so difficult to be in contention for the first time in a while and be able to tap into that confidence that you're supposed to be there and you're supposed to win."

Spieth's career skyrocketed after playing alongside Mickelson at the 2013 Deutsche Bank Championship where he shot a final-round 62. That round prompted Mickelson to call US Presidents Cup Captain Fred Couples to insist on calling up Spieth.

The Texan has long held an adoration for Mickelson, revealing he had got his prized signature in his youth. That adoration has been further reinforced by the recent fears of Mickelson, 23 years Spieth's senior.

"His streak of not being outside the top 50 in the world for however long, that is going to be a very difficult task for anybody going forward to match," Spieth said.

"Then to win a tournament, let alone a major championship, at 50 with how young and stacked the game has gotten is just an incredible feat.

"I think the way he handled Saturday and Sunday, when he did make mistakes - especially on the back nine on Saturday to then close that out and remain in the lead - it was typical Phil."

The old adage suggests life begins at 40, and in sports there have been several instances of stars celebrating glorious triumphs in the twilight of their career.

Phil Mickelson became the latest history maker on Sunday with a memorable US PGA Championship victory at the age of 50, making him the older male major winner of all time.

A two-shot victory over Brooks Koepka and Louis Oosthuizen made Mickelson a six-time major winner, and marked his first since he topped the leaderboard at The Open in 2013, aged 43.

But Mickelson is by no means the first sportsperson to prove that age is just a number. Here we remember some of the greatest achievements by those of advancing years (at least in sporting terms…).

BRADY BUCS THE TREND AT SUPER BOWL LV

When Tom Brady ended his lengthy association with the New England Patriots, some doubted whether he could emulate his unrivalled success at the Tampa Bay Buccaneers.

Those people were wrong. Already the oldest quarterback to have won a Super Bowl ring with the Patriots two years prior, Brady's memorable triumph with the Bucs over the Kansas City Chiefs at Super Bowl LV back in February saw him become the oldest player to win a ring, aged 43.

HOPKINS PUNCHES TICKET INTO THE HISTORY BOOKS

Boxing has a long history of fighters continuing well into their later years, and often times they prove ill-advised decisions.

But Bernard Hopkins certainly does not fall into that category. The all-time great first became boxing's oldest ever world champion when he defeated Jean Pascal in May 2011 to win the WBC and IBO light-heavyweight titles aged 46.

Two years later, he broke his own record by toppling Tavoris Cloud to win the IBF strap, and then in April 2014 – at the age of 49 – defeated Beibut Shumenov to add the WBA's belt to his collection.
 
FANGIO FINDS THE FORMULA TO SUCCESS

Revered by many as the greatest Formula One driver of all time, Juan Manuel Fangio certainly has a record to stack up against the best.

The Argentinian had seven full seasons in F1 and was world champion five times with four different teams and runner-up twice, while there were 24 wins from 51 Grands Prix.

The last of his F1 title-winning seasons occurred in 1957 at the age of 46, making him the series' oldest champion of all time.

NOTHING IS ZOFF LIMITS FOR VETERAN DINO

Dino Zoff is not the oldest player to ever feature in a World Cup fixture, that honour belongs to Essam El Hadary, who was 45 when he played in Egypt's final group-stage match against Saudi Arabia in 2018.

But the Italy legend does hold the record as the oldest player to win the World Cup when he lifted the trophy aged 40 years, four months and 13 days in a 3-1 victory over West Germany in 1982 in front of a bumper crowd of 90,000 in Madrid.

ROSEWALL AND SERENA ARE ACE

Serena Williams and her sister Venus have made a mockery of Father Time in women's tennis over the past two decades, while Roger Federer, Rafael Nadal and Novak Djokovic have dominated the men's game in their 30s.

But still, greatness should still be recognised and the last of Serena's grand slam titles at the 2017 Australian Open (when she was eight weeks pregnant no less!) saw her become the oldest female slam winner of all time.

In the men's game, the honour does not belong the three aforementioned modern-day greats (though who would bet against one of them doing it one day?). That benchmark lies with Ken Rosewall, who was 37 years, two months and one day old when he won in Melbourne in 1972.

PHIL TOPPLES BOROS

In the context of Mickelson's triumph, it seems only fair to mention the man who previously held golf's major benchmark.

Julius Boros was 48 when he won the 1968 PGA Championship. Indeed, golf is a game where players can excel much later in their careers.

Tom Morris and Jack Nicklaus were both 46 when they won the last majors of their glittering careers at The Open and the Masters respectively.

Brooks Koepka's fitness was a topic of discussion prior to the US PGA Championship and while he secured a share of the runners-up cheque, the four-time major winner was "super disappointed" with his performance.

Koepka went head-to-head with Phil Mickelson, who came out on top by two strokes in a stunning display that saw the American veteran become the oldest major champion in golf history on Sunday.

A two-time PGA Championship winner, Koepka signed for a two-over-par 74 as he was unable to capitalise on Mickelson's final-round 73 in South Carolina.

Koepka's short game was his downfall – the 31-year-old ended with a double-bogey, four bogeys and four birdies to finish second alongside Louis Oosthuizen at Kiawah Island.

American star Koepka has been plagued by injuries since winning back-to-back PGA Championships in 2019 and a fourth major title in three years, undergoing knee surgery in March before missing the cut at last month's Masters but his title tilt did not mask his frustration.

"Just how bad I putted the last two days," Koepka said when asked what part of the result was hard to stomach. "Three days, actually. It felt like tap-ins I was missing. Never felt comfortable, and you're not going to win if you do that.

"The thing was, Phil played great. That whole stretch when we turned after four and five and played those holes, it's into off the left for me and that's quite difficult for a right-handed player. And it suited Phil right down to the ground, and I thought he played that entire stretch from about six to 13 so well. So you know, I'm happy for him... It's pretty cool to see, and you know, but a bit disappointed in myself."

"I'm super disappointed, pretty bummed," Koepka added. "I'm not happy. I don't know if there's a right word I can say on here without getting fined, but it hurts a little bit. It's one of those things where I just never felt comfortable over the putts. I don't know why, what happened.

"I spent all weekend, the weekend before working on it and it was great, and you know, just over did it. I was trying to get my hands a little lower and ended up getting my hands too far low one under and actually ended up getting further away from the ball. The last nine, I just tried to go back to what I've always done and I felt like I was hitting better putts. I just wish I would have done it sooner."

Oosthuizen – winner of the 2010 Open Championship – carded a one-over-par 73 to earn a share of second spot.

The South African recorded his best major performance since finishing tied for second at the PGA Championship in 2017.

"I feel like I'm playing my heart out to get a second major, and I do know I have the game to do it. This was close," said Oosthuizen.

"My game wasn't great on the weekend. It was better today than yesterday. So I just need to work harder on it to get myself in contention again."

Tiger Woods congratulated "truly inspirational" Phil Mickelson after the American made history at the US PGA Championship on Sunday.

Mickelson defied form and age to capture the PGA Championship in history-making fashion following his two-shot triumph over Louis Oosthuizen and Brooks Koepka.

Not since February 2019 had Mickelson won on the PGA Tour, while the 50-year-old's last major triumph came at the Open Championship in 2013.

But Mickelson became the oldest major champion in golf history in South Carolina, where he secured a sixth major title and 45th Tour trophy.

Watching from the sidelines as he continues to recover from February's single-car crash, 15-time major winner and famous foe Woods used social media to hail Mickelson.

Woods wrote via Twitter: "Truly inspirational to see @PhilMickelson do it again at 50 years of age. Congrats !!!!!!!."

After reigning supreme, Mickelson – who has enjoyed a great rivalry with Woods – said: "This is just an incredible feeling because I just believed that it was possible but yet everything was saying it wasn't.

"I hope that others find that inspiration. It might take a little extra work, a little bit harder effort, but gosh, is it worth it in the end."

Phil Mickelson became the oldest major winner in golf history after claiming the US PGA Championship.

Mickelson made history thanks to the 50-year-old American's two-stroke victory at Kiawah Island on Sunday, eclipsing Julius Boros (48 years and four months at the 1968 PGA Championship).

A final-round 73 saw Mickelson clinch a second PGA Championship title, having also tasted success in 2005, and sixth major crown.

Mickelson's remarkable triumph at six under ended an eight-year major drought after last reigning supreme via the 2013 Open Championship, while he had not won on the PGA Tour since 2019.

Louis Oosthuizen (73) and four-time major champion Brooks Koepka (74) – a two-time PGA Championship winner – finished tied for second in South Carolina.

Mickelson carried a one-shot lead over Koepka into the final round and he had to overcome a slow start in his stunning title pursuit.

It was a tough and chaotic front nine for Mickelson, who bogeyed his opening hole and dropped the third, having responded with a birdie.

Mickelson mixed a pair of birdies with a bogey from the fifth to the seventh hole approaching the turn.

A birdie at the 10th boosted Mickelson, who then holed back-to-back bogeys after his approach shot at the 13th found water.

Mickelson recovered to gain a stroke at the 16th and while he bogeyed the 17th, Koepka and Oosthuizen were unable to take advantage after also ending the deciding round over the card.

Shane Lowry (69), Padraig Harrington (69), Harry Higgs (70) and Paul Casey (71) earned a share of fourth position – four strokes behind Mickelson.

Defending champion Collin Morikawa's bid for back-to-back titles ended in a tie for eighth spot, alongside the likes of Jon Rahm (68), Justin Rose (67), Rickie Fowler (71) and Masters runner-up Will Zalatoris (70), while Masters champion Hideki Matsuyama (72) closed out the event tied for 23rd.

Former world number one Jordan Spieth and his quest to claim a career Grand Slam resulted in a share of 30th at two over, a stroke better off than reigning U.S. Open champion Bryson DeChambeau (77).

As for four-time major winner Rory McIlroy, he ended the tournament in disappointing fashion with a 72 to finish five over.

Rory McIlroy acknowledged there is still plenty of room for improvement in his game after finishing off his work at the US PGA Championship with a final round of 72.

The world number seven came into the tournament with many fancying him to challenge, victory at the Wells Fargo Championship earlier in May suggesting he was returning to form at just the right time.

However, an opening 75 left him with work to do and he was never able to get into contention at Kiawah Island. A bogey at the 18th hole on Sunday saw him end on five over par, meaning the wait for a fifth major goes on.

For McIlroy, the key focus moving forward is finding greater consistency with his driver, having felt it has not been right "for a long time".

Asked to sum up his play on Sunday, he replied: "More of the same, very average.

"I couldn't really get anything going and it was a day where you had to get off to a fast start. The first few holes were playing a lot easier than they have done and I didn't do that, just sort of got stuck in neutral.

"I still have a way to go with everything. I just need to figure out a driver, as well. I just haven't driven the ball as well as I know that I can for a long time, and that's really the foundation of my game."

McIlroy won the US PGA Championship at the same venue in 2012, leading plenty to tip him to produce a repeat result nine years later, particularly coming after his recent success at Quail Hollow.

The man himself, however, was baffled at his status as favourite prior to the tournament, with his game "exposed" by the tricky conditions at the Ocean Course.

"I didn't understand those high expectations," he said. "It was good to win at Quail Hollow, a course that I've always played well on and am comfortable on.

"I didn't feel like playing well here nine years ago was going to automatically make me play well again, and I felt like coming in here there was still parts of my game that I needed to sharpen up, and obviously those parts were exposed this week in the wind and on a tough course."

Phil Mickelson remained on track to become golf's oldest major winner as he held a two-shot lead at the halfway stage of his final round at the US PGA Championship.  

The 50-year-old had ended Saturday's action at Kiawah Island with a one-stroke advantage over Brooks Koepka, who is seeking to win the tournament for a third time in four years.  

Mickelson's slender advantage disappeared with a three-putt bogey at the opening hole, setting the tone for an uneven front nine that saw him record just three pars but still reach seven under.  

The undoubted highlight was a wonderful chip from a tricky greenside bunker by the fifth green that found the cup, delighting a crowd that sensed they could be witnessing history in the making. 

Playing partner Koepka also had his struggles, following up an opening birdie with a double-bogey seven at the second. He sat at five under through nine, the same score as Louis Oosthuizen. 

Abraham Ancer had shown how it was possible to go low on Sunday, carding the best round of the week with a blemish-free 65 that owed much to a fast start.  

The Mexican birdied four of his opening six holes before picking up a further shot prior to the turn, seeing him go out in 31 strokes. While he cooled off on the way back in, it was still an impressive display.  

While his charge came too late to mount a challenge for the tournament, Ancer feels his superb score is a further sign of how he is getting close to making a major breakthrough in his career.  

"I usually like golf courses that are going to be tough, it's not just going to be a birdie-fest and you have to grind it out and have to hit the ball well where you are supposed to," he told Sky Sports.  

"It's not that I don't care about other events, I try to think about every event the same and try to win every time, but I do feel my game is better for golf courses that are tougher." 

Phil Mickelson's dream week at the US PGA Championship continued Saturday, putting him in position to become golf's oldest major championship winner. 

The 50-year-old survived early on the back nine to shoot 70 and hold a one-stroke lead over Brooks Koepka at seven under par for the tournament. 

He knows he does not have many chances left to collect his sixth major title, but he said he's trying to keep his focus on his game rather than thinking about the big-picture implications. 

"I think that because I feel or believe that I'm playing really well and I have an opportunity to contend for a major championship on Sunday and I'm having so much fun that it's easier to stay in the present and not get ahead of myself," Mickelson told reporters. 

Mickelson opened a gap on the field early on moving day with birdies on four of his first seven holes, then another at the 10th. 

"I felt I had a very clear picture on every shot, and I've been swinging the club well, and so I was executing," he said of that stretch. "I just need to keep that picture a few more times."

The picture got a bit fuzzy at 12 and 13, where Mickelson went bogey-double bogey. 

He said his focus slipped on those two holes. 

"It's just an example of losing the feel and the picture of the shot, and I get a little bit jumpy, a little bit fast from the top, and it just -- when that happens I get narrow and I end up flipping it," he said. 

"So those two swings were more a product of not staying or keeping the feel and the focus of the shot. And so that's just a small little thing that I need to iron out."

Mickelson finished the round with five consecutive pars to ensure his place atop the leaderboard heading into Sunday. 

His remarkable week has put him in position to surpass Julius Boros, who won the 1968 PGA at age 48, as the oldest major winner, but Mickelson was in no mood to ponder what he already had accomplished just by getting this far. 

"I'm more focused on a few things that I need to work on tonight before tomorrow's round, and I'm not really dwelling back on what took place today," he said. 

"I just know I'm having a lot of fun and I'm very appreciative of the way the people have been supportive."

Brooks Koepka is exactly where he expects to be heading into the final round of a major, particularly the US PGA Championship. 

After carding a two-under-par 70 on Saturday, Koepka sits one stroke back of leader Phil Mickelson at six under for the tournament, putting him in position to win his fifth major championship. 

Considering Koepka has been no worse than tied for fourth after 12 of the last 13 rounds at the PGA, his spot in Sunday's final pairing is familiar territory. 

"It just feels good, feels normal," Koepka told reporters after his round. 

"It's what you're supposed to do, what you practice for.

"I'm right where I want to be, and we'll see how tomorrow goes.

"Just be within three of the lead going into the back nine and you've got a chance."

Koepka trailed Mickelson by five strokes at one point Saturday but saw the five-time major winner slide back to him on the back nine. 

A bogey on 18 denied Koepka a chance to match Mickelson at seven under, but the 2018 and 2019 PGA winner is looking forward to a potential one-on-one showdown in the final round. 

"I can see what he's doing, and everybody else is in front of me, so I'll have a good idea on the leaderboard what's going on and just need to putt better -- simple," Koepka said.

"If I strike it anything like I did the last three days, I'll have a chance."

If he can pull it off, Koepka would become the first player to win the same major three times in a four-year stretch since Tom Watson captured the Open Championship title in 1980, 1982 and 1983.

Though the wind that had made scoring difficult at Kiawah Island's Ocean Course the first two days died down a bit Saturday, Koepka anticipates a challenging final round. 

"it's a tough golf course," he said. "I thought it definitely played easier for sure, but this golf course you can make one little mistake and it can be costly.

"That's why it's a major championship. I think this place is perfect for it, and it will be fun to watch tomorrow."

Phil Mickelson and Brooks Koepka both shot 70 Saturday to set up a mouth-watering final pairing at the US PGA Championship. 

At seven under par for the tournament, Mickelson holds a one-stroke lead over his countryman entering the final round at Kiawah Island's Ocean Course after saving par on 18 while Koepka bogeyed the last. 

The 50-year-old Mickelson is the fourth player aged 50 or older to lead a major after three rounds in the modern era, which began in 1934. 

The others were Tom Watson at the 2009 Open Championship, Greg Norman at the 2008 Open, and Julius Boros at the 1973 US Open -- none of whom ended up holding on for the win. 

Mickelson has been resilient this week in South Carolina, though, steadying himself Saturday after going bogey-double bogey on 12 and 13 to make par on the final five holes. 

While Mickelson's resurgence has excited the fans, Koepka remains a model of consistency at the PGA.

He has finished at least tied for fourth in 12 of the last 13 rounds at the major, and he could become the first player to win the same major three times in a four-year stretch since Watson won the Open in 1980, 1982 and 1983.

Mickelson will be shooting for his sixth major title and first since the 2013 Open, while Koepka seeks his fifth. 

Louis Oosthuizen, who shared the lead with Mickelson entering play Saturday, managed just three birdies on the day on the way to an even-par 72 that left him five under for the tournament. 

American Kevin Streelman (70) is at four under, while Oosthuizen's South African countrymen Branden Grace and Christiaan Bezuidenhout are at three under after even-par rounds of their own. 

Bryson DeChambeau (71) was unable to gain ground on the leaders and enters Sunday five back of Mickelson along with Gary Woodland (72) and Joaquin Niemann (71). 

Jordan Spieth matched Billy Horschel for the low round of the day with a 68, and he sits at even par for the tournament along with Rickie Fowler (69) and Keegan Bradley (72).

Reigning Masters champion Hideki Matsuyama fell from contention with a 76, putting him at one over with the likes of Shane Lowry (73), Padraig Harrington (73) and Ian Poulter (73). 

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