The Open Championship: Will Bryson DeChambeau, Justin Thomas and Jon Rahm Make the Cut?

Less than a month after winning the U.S. Open, Jon Rahm is in danger of missing the cut at the Open Championship.

The Spaniard carded a 1 over par 71 in the opening round at Royal St. George's in Sandwich, southeast England, on Thursday. He trails first-round leader Louis Oosthuizen by seven strokes.

The pre-tournament favourite, Rahm lost his world No. 1 ranking to Dustin Johnson this week and momentarily lost his nerve too on Thursday, slapping his thigh in frustration after a costly double bogey at the ninth hole.

If the Spaniard is growing impatient with his own performance, the same could be said of Bryson DeChambeau—the man Rahm succeeded as U.S. Open champion. DeChambeau also finished the first round at 1 over par and was far from happy with his driver after finding just four of 14 fairways.

Bryson DeChambeau at The Open Championship
Bryson DeChambeau waits to putt on the 18th green during the first round of the 149th Open at Royal St George's in Sandwich, southeast England, on July 15. Andy Buchanan/AFP/Getty Images

"If I can hit it down the middle of the fairway that's great but, with the driver right now, the driver sucks," he complained during his post-round interview.

"It's not a good face for me and we're still trying to figure out how to make it good on the mis-hits. I'm living on the razor's edge, like I've told people for a long time.

"I've realised this for years now. This has happened since 2016-17, when players stopped drawing it. There's not very many golfers that draw it any more. […] It's literally the physics and the way that they build heads now. It's not the right design, unfortunately, and we've been trying to fix it."

The driver's manufacturer swiftly pushed back, however.

"Everybody is bending over backwards. […] Bryson knows it. It's just really, really painful when he says something that stupid," Cobra's tour operations manager, Ben Schomin, told Golfweek.

DeChambeau subsequently apologized on Instagram, admitting his comments had been "unprofessional."

Defending champion Shane Lowry also finished at 1 over par, while Justin Thomas is a shot further adrift and faces an uphill task to be among the 70 players plus ties who will qualify for the final two rounds.

Hope is surely all but extinguished for Phil Mickelson, who carded a 10-over par 80, the joint-worst score of the first round.

Here's all you need to know ahead of the second round.

What Is the Open cut rule?

As mentioned above, the top 70 players and ties after the first two rounds progress to play on the weekend. The Open has the joint-most forgiving cut rule of the four majors, along with the PGA Championship.

Only the top 50 players plus ties progress to the final two rounds at the Masters, while the top 60 players and ties qualify for the final stages of the U.S. Open.

Jon Rahm and Shane Lowry
Spain's Jon Rahm (L) bumps fists with Ireland's Shane Lowry as they arrive on the 1st tee ahead of his first round on day one of The 149th British Open Golf Championship at Royal St George's, Sandwich in south-east England on July 15. Both players finished the first round at 1-over par. Paul Ellis/AFP/Getty Images

What is the Projected Cut at the Open?

The cut line is currently projected to be even par, with 73 players of the 156-man field on track to make the cut at the end of the second round.

Which Players Could Miss the Cut at the Open?

Rahm and DeChambeau aren't the only high-profile players in danger of missing the cut. Defending champion Shane Lowry is also 1 over par after the first round, as are former winners Darren Clarke and Henrik Stenson.

Justin Thomas and Patrick Reed are both 2 over par, while 2019 U.S. Open champion Gary Woodland is a shot further back.

Mickelson, winner of the PGA Championship this year, will almost certainly miss the cut after ending the first round at 10 over par.