Golf is a recreation of Guidelines – however at The Open these guidelines hit otherwise. From outlawed golf balls to forbidden putts, the professionals will play a distinct recreation than you do on a Saturday morning.
The large e-book applies at Royal Portrush simply because it does at your own home membership. However this week, The R&A layers on a complete additional set of rules you’ll hardly ever encounter in your weekly Stableford.
For all of its championships and Worldwide matches – whether or not it’s an Beneath-16s newbie or The Open – the governing physique makes use of Native Guidelines and Phrases of Competitions. It’s extra generally often called the Arduous Card.
There are 21 of those, and they’re up to date yearly 12 months by The R&A’s championships crew. Generally they tweak present guidelines, different occasions they create particular situations – Native Guidelines – to go well with the challenges of the event.
In previous Opens, these have included aid procedures for grandstands and even bans on touching a protected species of toad!
We’ve scoured the Arduous Card and Open Native Guidelines to disclose among the strange legal guidelines prone to be in pressure at Royal Portrush – the form of guidelines you’ll (fortunately) hardly ever want to fret about at your membership…
It’s One Arduous Card: The Open Guidelines You’ll (Hopefully) By no means Encounter at Your Membership

The One Ball Rule: Test your balls
This isn’t on the Arduous Card however is enforced as a Native Rule – and is customary on most elite excursions.
It’s formally often called Mannequin Native Rule G-4 however it’s higher often called the One Ball Rule.
This was enforced in Regional Open Qualifying however now its saved just for the principle occasion. It could actually trigger actual points for gamers not enjoying shut consideration.
Throughout a spherical, a participant should use the identical model and mannequin of ball for each stroke. That ball additionally must be on a conforming checklist.
The purpose is to cease gamers from switching balls to go well with completely different holes – from, say, a low-spin ball for a protracted Par-5 to a high-spin mannequin on a difficult Par-3.
This rule is basically strict. Two variations of the identical ball, the place one has a splash and one doesn’t, are completely different balls. It’s the identical for various colored balls with similar markings.
The penalty is one shot for every gap the place the rule is breached. As quickly as they’ve realised they’ve tousled, the participant should revert again to the unique model and mannequin on the subsequent tee. It’s disqualification in the event that they don’t.
Embedded in a Stacked Turf Bunker Face? Robust luck
A ball isn’t in a bunker when it’s within the wall or face. Rule 12.1 normally involves the rescue when a ball embeds within the stacked turf face of a bunker. At most golf equipment, it’s a part of the final space and free aid is out there underneath Rule 16.3.
Not at The Open. The R&A Arduous Card is modified to say: “No free aid is allowed for a ball embedded within the stacked turf face above a bunker”.
What’s a stacked turf face? Suppose revetted bunkers and also you’ll be on the appropriate strains. And, sure, there are a great deal of these at Royal Portrush.
Now, there are some hyperlinks programs the place this can be a customary Native Rule – verify these scorecards! – however most golfers will escape this case.
And should you’ve ever seen a ball wedged into a kind of brutal bunker faces, and tried to play it out, be thankful for that.
Depart the Laser at House
Some huge tournaments, noticeably many ladies’s tour occasions and the boys’s PGA Championship, permit gamers to make use of distance measuring gadgets.
The Open isn’t a kind of. Mannequin Native Rule G-5 prohibits using rangefinders, watches, and something that may measure distance.

No Follow Placing at The Open – Right here’s Why
Do you know you’ll be able to practise placing or chipping “on or close to the placing inexperienced of the opening final accomplished”? So should you’ve had a shocker with a tiddler at your membership, you’re allowed to try to proper that mistaken as soon as the opening is over. It’s there in Rule 5.5b.
I say, YOU are allowed, as a result of the opponents at The Open are usually not. Mannequin Native Rule I-2 overrides and prohibits it. Gamers who accomplish that obtain a two-shot penalty.
It’s in all probability for the most effective. Rounds may be lengthy sufficient already in skilled occasions – even with a Tempo of Play coverage in place.
Why You’ll By no means See Traditional Golf equipment at The Open
I as soon as performed a spherical with a fella boasting a full assortment of Ping Eye 2 permission woods. They had been a factor of magnificence, and he hit them completely. This wasn’t a long time in the past, both, it was within the final couple of years.
Loads of membership gamers nonetheless use older irons and golf equipment as a result of they work – or as a result of a brand new set prices a small fortune.
However Mannequin Native Rule G-2, on Groove and Punch Mark Specs, bans opponents at The Open from utilizing any membership that doesn’t conform to strict tips launched in January 2010. There’s a whole database of fairway woods, hybrids, irons and wedges gamers can seek the advice of to keep away from a nasty shock.
When you membership might apply this rule, I’ve by no means seen it occur. So should you’re nonetheless swinging that trusty previous membership – knock your self out.

Ever Heard of this 15-Minute Scorecard Rule?
Name this the Jordan Spieth rule, because it was his mishap on the Genesis Open in 2024 that each one however led to this alteration.
It’s not an alteration to the Guidelines of Golf, however it’s now usually utilized in tour occasions.
It says a participant’s scorecard is “formally returned to the Committee quarter-hour after the scorecard is entered into the digital scoring system”.
In the event that they’ve signed their card, entered it, after which 5 minutes later realise there’s a mistake they will catch the error earlier than a penalty is enforced.
Your membership might undertake this too, however let’s be sincere: as soon as your card’s within the field, good luck convincing anybody to open it up once more!

Inexperienced Books? Not right here
Do you know you’ll be able to nonetheless use inexperienced books? The principles restrict the scale and scale, however you’ll be able to nonetheless peek at a couple of arrows and gradients to determine loosely the place your putts are going.
At The Open, although, the restrictions are at one other stage.
Mannequin Native Rule G-11 requires gamers to solely use the yardage e-book that’s been “permitted to be used within the competitors”.
The rule says it’s to make sure “gamers and caddies use solely their eyes and really feel to assist them learn the road of play on the placing inexperienced”.
How would you deal with The Open Guidelines?
It’s fascinating to see how the Guidelines of Golf can evolve in elite competitions. Subsequent time your ball plugs in a bunker face, otherwise you practise a missed putt, be grateful you’re not enjoying underneath the Arduous Card in your month-to-month medal!
What do you make of The Open guidelines? Let me know by sending me an electronic mail at s.carroll@nationalclubgolfer.com or by leaving us a touch upon X.
NOW READ: Royal Portrush’s Opening Lure: Is it custom or travesty?
NOW READ: What can (and may’t) you do in case your ball is in a bunker?
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