Defending champion Dustin Johnson, Brooks Koepka, Sergio Garcia and Rory McIlroy all missed the cut at the Masters on Friday, while Justin Rose remains in the lead.

Johnson, who won the Masters for the first time in November, shot a three-over 75 on the second day to be five over overall and miss the cut by two strokes.

World number one Johnson made three bogeys on his final four holes to miss out, having previously impressed at Augusta, with top-10 finishes in his past five appearances.

He made four birdies on the front nine but also had two bogeys and a double bogey on the fifth.

Johnson becomes the third Masters champion in the past 15 years to miss the cut.

"Six three-putts in two rounds, you just can't do that," Johnson said. "Obviously didn't drive it great but drove it good enough.

"I never was really too bad out of position, just the three-putts killed me. You take all the three-putts away, I'm one under. That was kind of the difference."

The 36-year-old was joined by four-time major winner Koepka with a similar round to miss the cut, along with 2017 Masters winner Garcia, who shot an even round of 72 to finish at four over.

Four-time major winner McIlroy (74) and two-time Masters runner-up Lee Westwood (71) also failed to make the cut, with both unable to recover after poor first days at Augusta.

At the other end of the leaderboard, Rose sits one shot clear of Will Zalatoris and Brian Harman after a second-round 72, having led by four shots on the opening day.

Rose bogeyed four of his first seven holes on Friday, before steadying with three birdies on the back nine to salvage his lead.

"I think it was just a classic day at Augusta National when you're just slightly off," Rose said.

"You can be a foot or two out on certain occasions and you end up struggling. I think maybe off the back of yesterday, it starts to feel pretty different pretty quickly. But I told myself going up the eighth hole, you're leading the Masters, your frame of reference is a little bit different to yesterday. Four ahead is something, but you're still leading so like just enjoy it and keep going."

On his Masters debut, 24-year-old Zalatoris moved up the leaderboard swiftly, aided by five birdies on his back nine, including three straight to finish his round as he carded a four-under 68.

Harman also moved into contention after three birdies on his final six holes to finish with a three-under 69.

Australian Marc Leishman and last week's Texas Open winner Jordan Spieth are tied for fourth after both enjoyed strong rounds on Friday.

Bernd Wiesberger and Tony Finau both shot 66s on Friday to storm up the leaderboard into joint sixth alongside four other players, including world number two Justin Thomas.

Brooks Koepka is unsure if he will play again before the US PGA Championship after missing the cut at the Masters on Friday.

Playing for the first time since February after undergoing knee surgery, Koepka carded rounds of 74 and 75 to miss the cut at Augusta.

After back-to-back top-10 finishes at the Masters, it marked the first time the four-time major winner had failed to reach the weekend at the tournament.

With the US PGA due to start at Kiawah Island on May 20, Koepka is unsure if that will be his next competitive event.

"It's tough to say right now. That's, what, five weeks ahead, I think? It's kind of tough to say that," he told a news conference.

"I won't miss it, I know that, but tough to say if I'll play anything before that just for how it feels, how rehab goes and everything."

He added: "I wouldn't have been playing for another month if it wasn't this week. So I'll take a nice long break after this.

"Way I look at it, I have two more days to do rehab that I probably wouldn't get if I was out here, and I'll get ready for the PGA."

Koepka, who was playing just his sixth tournament of the year, lamented his putting performance at the Masters.

"Putter was ice cold, didn't make any putts. I don't want to say the speed was off, maybe the reads a little bit. Maybe the start line. I'm not quite sure," he said.

"A lot of them felt like good putts, and they weren't even hitting the hole. I don't know. It could be any one of those things. They felt good coming off the face, but they didn't even sniff it."

Justin Rose mounted a back-nine recovery to finish his second round with a two-shot lead over Jordan Spieth and Marc Leishman.

Rose shot a sublime opening round of 65 at Augusta, but relinquished his four-shot advantage on Friday before returning to the top of the leaderboard with three birdies in his space of four holes.

The Englishman was the man to catch on seven under when he signed for a level-par 72, rallying after bogeying four of the first seven holes in his second round.

Gains at the 13th, 14th and 16th holes gave Rose momentum heading into the weekend as he bids to don the green jacket for the first time.

The in-form Spieth surged into a share of second place with Australian Leishman by carding a four-under 68, with birdies proving easier to come by for the field than on the opening day.

Three-time major champion Spieth, on a high after ending a title drought stretching back to 2017 at the Texas Open last weekend, made four of his five birdies after the turn and only dropped one shot at the 12th.

Leishman also made a significant move, setting the tone by starting with three birdies in row and going on to shoot a five-under 67.

Scintillating six-under rounds of 66 from Bernd Wiesberger and Tony Finau put them just three shots adrift of Rose along with Justin Thomas, who shot a 67.

Will Zalatoris, Brian Harman and Si Woo Kim were also well poised on four under, with their rounds still in progress. Defending champion Dustin Johnson had work to do back on three over through 10.

Bryson DeChambeau responded to a poor opening round with a 67 of his own to sit at one over, while Brooks Koepka (+5) and Rory McIlroy (+6) were facing a battle to make the cut 10 and eight holes into their rounds respectively.

Lee Westwood was a couple of shots below the projected cut mark on five over midway through his round.

Justin Rose surged into a four-shot lead as Rory McIlroy and Bryson DeChambeau were among the big names to endure first-round struggles at The Masters.

Rose was two over through seven holes in tough scoring conditions, with quicker and firmer Augusta greens proving a much bigger challenge than when Dustin Johnson won the tournament with a record score of 20 under last November.

The Englishman sparked into life with an eagle at the par-five eighth hole and lit up the back nine to card a magnificent seven-under 65, the lowest Masters round of his career, with patrons allowed back in under blue skies.

Rose, eyeing a maiden Masters title, got on a roll with seven birdies in nine holes before finishing with a composed par to retain his four-stroke advantage.

Brian Harman and Hideki Matsuyama shared the early clubhouse lead with impressive three-under opening rounds of 69 before Rose stormed clear.

Defending champion Johnson shot a two-over 74 following a double bogey at the 18th, having made a bogey-birdie start before getting in the red for the first time at 13.

Masters debutant Will Zalatoris, Webb Simpson, Christiaan Bezuidenhout and Patrick Reed will start their second rounds on two under following encouraging starts, while new father Jon Rahm and Xander Schauffele are among a clutch of players at level par.

McIlroy suffered a miserable opening round and is back on four over, facing a battle to make the cut rather than fight it out to complete a career Grand Slam, while U.S. Open champion DeChambeau was four over through 15.

Jordan Spieth was left to rue a triple-bogey after launching a wayward tee shot into the trees at the ninth but was in a share of eighth on one under after chipping in for an eagle at 15, while Justin Thomas was a further stroke back through 15.

Brooks Koepka matched Johnson's 74 just a few weeks after undergoing knee surgery and the previously in-form Lee Westwood is languishing on six over.

Tommy Fleetwood generated a roar from those fortunate enough to be at the 16th to see him make a hole-in-one before he signed for a 74.

Defending champion Dustin Johnson failed to hit the ground running in testing conditions when he started the defence of his Masters title on Thursday.

Johnson donned the green jacket for the first time last November, finishing the tournament on a record-breaking 20 under par.

The world number one made only four bogeys as he blew the field away in the 2020 major at Augusta, but he dropped two shots in his opening five holes five months later, with patrons returning under blue skies.

Birdies were at a premium when the tournament got under way on much quicker, firmer greens than those seen in last year's tournament.

Two-time major champion Johnson started by dropping a shot after running through the first green with his second shot. Although he hit straight back with a birdie at the par-five second, Johnson was back at one over after failing to sink a par putt at the fifth.

Hideki Matsuyama led the way on three under through eight holes after draining an eagle putt at the eighth, with Christiaan Bezuidenhout and Si Woo Kim just a shot behind.

New father Jon Rahm, Patrick Reed and Paul Casey were among a host of players on one under following early birdies.

The recently in-form Lee Westwood was struggling on three over through six after a double bogey at the third, while Rory McIlroy dropped to one over with a dropped shot at the fifth and Brooks Koepka was level par eight holes into his first round.

Collin Morikawa added the WGC-Workday Championship to his growing list of achievements after triumphing by three strokes.

Winner of last year's U.S. PGA Championship, Morikawa used a three-under-par 69 to seal victory at the star-studded World Golf Championships event in Florida ahead of Viktor Hovland, Brooks Koepka and Billy Horschel on Sunday.

Morikawa holed four birdies and just one bogey to finish 18 under for his fourth PGA Tour crown – the most by any player currently aged under 25.

He also joins Tiger Woods as the only player to win a major championship and WGC event before turning 25.

Further to that feat, Morikawa is the seventh player to claim four or more PGA Tour tournaments – including a major – under the age of 25, following in the footsteps of Woods, Jack Nicklaus, Jordan Spieth, Rory McIlroy, Justin Thomas and Jerry Pate.

The overnight leader by two strokes, Morikawa recovered from a slow start after bogeying his second hole of the final round – the 24-year-old American birdieing three of five holes before the turn as he ended the day without dropping another shot.

Norwegian star Hovland mounted a serious title charge following a five-under par 67, but he was unable to stop Morikawa.

Hovland finished tied for second alongside four-time major champion Koepka (70) and Horschel (70) at The Concession Golf Club.

McIlroy's final-round 71 saw the former world number one and four-time major winner slip down into a tie for sixth, six strokes adrift of Morikawa.

Defending champion Patrick Reed (72) ended the co-sanctioned PGA and European Tour tournament a shot further back.

Justin Thomas (71) earned a share of 15th at eight under, a stroke better off than U.S. Open champion Bryson DeChambeau (69).

It was a forgettable finish for world number one Dustin Johnson, who closed proceedings with a six-over-par 78.

The two-time tournament winner plummeted 12 positions to T54 at five over the card.

Brooks Koepka fired a six-under 66 to grab a one-stroke lead at the halfway mark of the WGC-Workday Championship.

The four-time major champion made seven birdies and one bogey at The Concession Golf Club in Florida on Friday to move into 11 under.

Koepka holds a 36-hole lead or co-lead on the PGA Tour for the eighth time in his career as he eyes a second World Golf Championships title.

The American made three straight birdies from the 15th before dropping his only shot of the round at the last.

Koepka is a stroke clear of Collin Morikawa (64), Billy Horschel (67) and Australian Cameron Smith (66).

Morikawa, last year's US PGA Championship winner, produced the equal best round of the day, with Bryson DeChambeau – who is tied for 20th – also shooting a 64.

Overnight leaders Webb Simpson and Matt Fitzpatrick both slipped back into a tie for fifth after firing 69s, sitting at nine under alongside Tony Finau (67).

Defending champion Patrick Reed carded another 68 to be at eight under alongside Kevin Kisner (69).

Rory McIlroy shot a two-under 70 to get to five under and into a tie for 13th, with Justin Thomas (66) also among that group.

A six-time WGC winner, Dustin Johnson improved on his opening-round 77, carding a 69 that sees him sitting at two over.