Richard Bland upstaged a star-studded field to earn a share of the U.S. Open lead at the halfway stage as defending champion Bryson DeChambeau soared up the leaderboard.

Unheralded Englishman Bland, 48, powered to the top of the summit at Torrey Pines thanks to his four-under-par 67 in San Diego, where he continues to prove patience pays off.

Alongside Russell Henley (70) for the one-stroke lead after two rounds, Bland is benefitting from perseverance, having gone almost 20 years without a European Tour title.

At the 478th attempt on the European Tour last month, Bland claimed an emotional win at the British Masters, which earned him a place in his fourth major championship.

Bland – who missed the cut at his one previous U.S. Open appearance in 2009 – dazzled on day two of this year's tournament, storming into the clubhouse lead before being joined by American Henley.

After opening with a 70, Bland holed seven birdies and three bogeys to catapult himself to the top of the standings, before Henley teed off in his second round, amid his improbable dream of clinching a major.

"I feel good about my game," said three-time PGA Tour champion Henley, whose previous best performance at a major came via an 11th-place finish at the 2017 Masters.

"I've never been in this position before in a major. Just feel like I'm going to learn something no matter what happens."

Louis Oosthuizen (71), who was the overnight co-leader along with Henley, ended day two in a tie for third position alongside Matthew Wolff (68), while Bubba Watson (67) and Jon Rahm (70) are a shot further back at three under through 36 holes.

DeChambeau boosted his hopes of back-to-back U.S. Open titles, though the big-hitting American star remains five strokes off the pace heading into the weekend.

A two-under-par 69 saw DeChambeau move to even par as he rose 47 positions into a tie for 13th alongside rival and two-time U.S. Open champion Brooks Koepka (73), Justin Thomas (69), Collin Morikawa (67), Harris English (70), Branden Grace (70), Christiaan Bezuidenhout (70) and Adam Hadwin (72).

Koepka – eyeing a fifth major crown – lost ground on the leaders after mixing five bogeys and just three birdies, while Rory McIlroy followed his opening-round 70 with a 73 to be one over the card as world number one Dustin Johnson (73) ended the day two over.

US PGA Championship winner Phil Mickelson emerged from the jaws of elimination, qualifying for the weekend via a two-under-par 69 after his forgettable 75 on Thursday.

Masters champion Hideki Matsuyama (76), Adam Scott (75), Sergio Garcia (74), Patrick Reed (73) and Jordan Spieth (69) all avoided the cut, but Justin Rose (77) was not so fortunate at 13 over.

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.

Billy Horschel, Matt Kuchar, Scottie Scheffler and Victor Perez are all vying for a spot in the WGC-Dell Technologies Match Play final after a day of upsets in Austin.

Stars Jon Rahm, Tommy Fleetwood and Sergio Garcia surprisingly crashed out in the quarter-finals as the underdogs ruled on Saturday.

The unpredictable tournament continued on the weekend after world number one Dustin Johnson, Justin Thomas, four-time major winner Rory McIlroy, U.S. Open champion Bryson DeChambeau and Patrick Reed were unable to advance beyond the group stage.

Spanish third seed Rahm topped Erik van Rooyen 3 and 2 in the last 16 before being upstaged by Scheffler 3 and 1 in the quarter-finals at the Austin Country Club.

"I felt like I played some really good golf," said Scheffler, who will meet Kuchar in an all-American clash for a spot in Sunday's decider. "I think I kept things bogey-free and I got some early leads and made sure that I kept the pressure on those guys and made them feel like they had to do something special to beat me, which they weren't able to do."

Fleetwood – the 21st seed – succumbed to Horschel after 19 holes, while former Masters champion Garcia was beaten by 31st seed Victor Perez 4 and 3.

American golfer Horschel and France's Perez will do battle in the semis.

Englishman Fleetwood was sent packing after hitting a hole-in-one during his last-16 victory – a drive out of bounds at the 12th seeding him come unstuck in the quarters.

It was a big day for 2013 champion Kuchar, who eliminated former world number one Jordan Spieth 1up before defeating Brian Harman 2 and 1.

Kuchar – the 52nd seed – was runner-up in 2019, with last year's event cancelled due to the coronavirus pandemic.

"Certainly golf's a funny game and I think there are times as a professional where you can feel so far away, you think, golly, I don't have it," Kuchar said.

"I'm racking my brain trying to find it, but then you plug in the right ingredient, the right key, and then all of a sudden it snaps back, and thankfully it's been working and I'm seeing progression. It's just finally now it's clicked and it's a lot more fun this way, I assure you."

Dustin Johnson, Justin Thomas and Bryson DeChambeau were among those to pack their bags as the field was cut to 16 at the WGC-Dell Technologies Match Play on Friday.

Top-seeded Johnson lost to Kevin Na, who finished birdie-birdie to turn the match and eliminate his fellow American from Group 1 on day three in Austin.

Scotland's Robert MacIntyre progressed out of the group after a tie with Adam Long, having landed one of the shots of the week with a spectacular drive on the 18th which ended up inside three feet and ultimately got him through.

"I had probably one of the best and one of the luckiest golf shots I've hit in my life," the Scot said.

"I had a bit of bad luck here and there and managed to turn it around right at the end there, and it's one of them things, you've just got to keep fighting until the end, and it just shows anything can happen in this game."

Johnson and Na's match was not without tension, with the 28th-seeded American tapping his opponent on the shoulder on the 11th green to warn him about collecting his ball before concession had been verbalised.

In a mildly tense exchange, Johnson appeared to apologise but walked away less than impressed.

DeChambeau, the fifth seed, bowed out at the hands of Tommy Fleetwood, who topped Group 5.

Fleetwood had established a 4up advantage through seven holes but stumbled, allowing DeChambeau back in the match. The Englishman finished with a par on the 18th to win.

"It turned really scrappy for a lot of the back nine," Fleetwood said. "He started coming back and on the last an unlikely par. Match Play is that funny all week. There are guys who have played better than me for three days who are going home and I'm going through."

World number two Justin Thomas was another casualty, despite defeating 2010 Open champion Louis Oosthuizen 3 and 2.

There were eight playoffs required, with Jon Rahm, Bubba Watson and Sergio Garcia among those winning to join the likes of Jordan Spieth in the last 16.

Garcia delivered an incredible shot to beat Lee Westwood, making a hole-in-one at the fourth hole.

Rory McIlroy was also eliminated, tying with Cameron Smith as Ian Poulter finished top of Group 11 after three wins.