Opinion & Analysis
Hot Drivers: What’s really going on!
Thanks to the R & A and Xander Schauffele, along with (allegedly) at least three other players we don’t know about yet having drivers test over the CT limit for speed, the golf world has exploded with hot takes on the subject.
Did the players know? Did someone else know? Are OEMs building fast drivers to trick the machine?
I’m not here to make hot takes, I’m here to talk facts and truths about how we got here and how Xander Shauffele (and potentially others) arrived at Royal Portrush with drivers over the CT limit.
First, let me make one thing straight, I don’t believe Xander, or any of the other players, had any idea their drivers were illegal/over the limit. Did they know they had a great driver that performed? Yes, but golf is a game of integrity and like life, in golf your reputation is everything; I don’t believe for a second they thought they were getting a distinct advantage against their playing competition.
How Does This Happen?
Modern driver heads are complex things. The tolerances that the OEMs and their suppliers work with are extremely tight—like aerospace industry tight—one engineer I have spoken to many times has said its actually tighter. You have extremely thin yet strong titanium, moveable weights, carbon fiber, and more working together in a complex geometry. They are built to launch golf balls up to 185 MPH all while maintaining flexibility so as not to explode on impact. It’s not easy to make a good one but the good ones make it seem easy.
A driver face will eventually wear out, its a fact. It can only take so many impacts before it will fail. The number it takes is generally very high, so high that many golfers will switch before failure ever occurs. It is well known within the industry that as drivers are used they actually get FASTER! The fastest a driver will ever be for ball speed are the few balls before eventual failure because of the increased flex happening with the face and the great energy transfer… but where does this flex come from?
OEMs are in the business of distance, and making drivers as long as possible. Thanks to advanced manufacturing, processes, and materials, they can now make drivers right to the limit and truly push the envelope with every single head. TaylorMade, for example, even openly talks about how thanks to the new speed injection on the M5 and M6 drivers, they are building drivers beyond the limit and dialing them back—pretty cool technology if you ask me.

Fast drivers + high swing speed players = a perfect storm for drivers to become hot.
The CT (characteristic time ) limit is .239 with an allowance of .018, meaning the absolute limit the OEMs have to work with is .257. If you get a driver that was measured by both the factory and your tour department and deemed legal at say .255 then you are good to go. But, without daily testing, we dont’t know when this “hot” stage in the driver’s life occurs: 100 balls? 1,000? What if you test before and after a round and it only fails after? No way to tell when it failed, maybe it was after the final tee shot and it was never non-conforming during play, what is the outcome? It’s not like the .003 increase would offer any distinct advantage once you factor in player and environmental factors, but still under the rules it’s a NO-NO.
You could even go the other way when it comes to wedges. I’ve been suggested the hypothesis that you could mill illegal grooves into a wedge beyond the limit but after a single bunker practice session of say 150-200 shots it’s now legal and RIGHT at the limit because of wear. In reality, this CT limit-pushing greatly benefits the regular golfer and allows any players to get the absolute most out of their driver (legally) when they get fit for a new one. Tour players get this same advantage, but because of their swing speeds, the likelihood of then getting to the fastest/hottest point is going to happen, well…faster.
Obviously lots of discussion about fast (hot ????) drivers so let’s talk about that for a minute.
As they get used, a driver will get faster. The “hottest” a driver will be is right before the face fails!
To think this is a new thing is shortsighted, there are other examples…
— Ryan Barath ???????? (@RDSBarath) July 21, 2019
Tolerance, Tolerance, Tolerance…
With so much talk about the tolerances of each head, what about the CT measuring devices? We’re talking about .003 microseconds! One tiny change to the way the test is conducted by the user, or how the machine is calibrated and there will be variance.
It’s the same thing when talking about lies and lofts, if unknown to you, the machine you use is off by a single degree then at least the whole set is “off” which from a players perspective is fine as long as you are seeing the intended results. Unfortunately, when it comes to the rules this could be the difference between a driver passing and failing—that’s a big deal.
What this has exposed and shown the world is that modern drivers really are pushing the limit for all golfers. Does it mean we need a rule roll back or adjustment to the CT variance to get the “hot” driver okayed…OR, does this mean the governing bodies to need put a real clamp down of how and when a driver can be tested and what it really means to “be at the limit”?
There is certainly a lot to discuss on many sides of this issue from player, rules, technology perspectives, but if one thing is for sure, this really is just the tip of the iceberg to another element of the distance debate.
Opinion & Analysis
Brandel Chamblee PGA Championship Q&A: Rose’s huge McLaren risk, distracted LIV pros and why Aronimink suits the bombers
PGA Championship week is here, and Brandel Chamblee did not hold back in our latest discussion ahead of the season’s second major.
In our 2026 PGA Championship Q&A, golf’s leading analyst made the case that PIF pulling LIV’s funding has left its players competing in a state of confusion, called Justin Rose’s mid-season equipment switch a huge risk at 45, and explained why Aronimink will be a bombers’ delight this week.
Check out the full Q&A below.
Gianni: With the PIF confirming that they’re pulling funding from LIV at the end of the season, what impact do you expect that to have on the LIV players competing at the PGA Championship?
Brandel: I would imagine that they have all been thrown into a state of confusion, and will be distracted, not knowing where they are going to play next year and not knowing exactly their road back to either the DP World Tour or the PGA Tour. Or in Rahm’s case, being tied to a sinking ship for the next few years, likely playing for pennies on the dollar in events that no one cares about or watches.
I doubt this would put him in the best frame of mind to compete at his highest level. Keeping in mind, however, that majors are the only time that LIV disciples get to play in events that matter, so never disregard the motivation they have to prove to the world they are still relevant.
Gianni: Justin Rose switched to McLaren Golf equipment mid-season while playing some of the best golf of his career. What do you make of the change?
Brandel: I don’t really know what to make of Rose switching equipment. It seems a huge risk on his part, even though it is likely, in my opinion, that the clubs he’s playing are similar, if not the exact grinds, to what he was playing previously, with a McLaren stamp on them.
Having said that, at best, it is a distraction when he seemed to be as dialed in with his game as any 45-year-old could be and trending in the majors to perhaps do something that would definitely put him in the Hall of Fame. At worst, given the possibility that these clubs aren’t just duplicates of his old set stamped with McLaren on them, he’s made an equipment change that would take time, and 45-year-old athletes don’t have the time to do such things.
Gianni: Aronimink has only hosted a handful of professional events since it hosted the 1962 PGA Championship. What kind of test does it present, and does a course with less recent major championship history tend to level the playing field?
Brandel: Even though Aronimink has only hosted a handful of meaningful professional events, it has been fairly discerning in who can win there. When Keegan Bradley won the BMW Championship on the Donald Ross masterpiece in 2018, he was the 2nd best iron player on tour coming into that week. When Nick Watney won the AT&T at Aronimink in 2011, he was 2nd in strokes gained total coming into the week.
In 2020, Aronimink hosted the KPMG Championship, and Sei Young Kim won. On the LPGA that year, she was first in greens in regulation, putts per green in regulation, and scoring average on the way to being the LPGA player of the year. And then there is the 1962 PGA Championship won by Gary Player, who eventually became just one of a few players to win the career grand slam on the way to winning 9 majors. It is a formidable test, and if it’s not softened by rain, it will bring out the best in the upper echelons of the game.
Gianni: Is there a specific hole at Aronimink that you think will do the most to decide the winner?
Brandel: The hardest hole at Aronimink in each of the three tour events that have been played there since 2010 has been the long par-3 8th hole, with the par-4 10th being the second hardest, so most of the carnage will happen around the turn, but with the par-5 16th offering opportunities for bold plays and the tough closing holes at 17 and 18, the finish is likely to be frenetic.
Gianni: The PGA Championship has always sat in the shadow of the other majors. What does the ideal PGA Championship look like in your eyes, and what would it take for it to carve out its own identity?
Brandel: The PGA Championship, to whatever degree it suffers from the comparison to the other three majors, is still counted just as much when adding them up at the end of one’s career. Almost 1/3 of Nicklaus’ major wins were the five PGA Championships he won. Walter Hagen won 11 majors, five of which were PGA Championships.
Tiger Woods twice in his career won back-to-back PGA Championships, and those four majors count just as much as the other 11 he won. The PGA may not have the prestige of the other three, but it carries the same weight. Having said that, I preferred the identity that it had as the last major of the year.
Gianni: You nailed your Masters picks. Rory won, Scottie finished solo second, and Morikawa surged to a tie for seventh. Who are your top 3 picks for the PGA Championship and why?
Brandel: I am not a huge fan of majors played on golf courses that have been shorn of most of the trees, although I understand some of the agronomic reasons for doing so and of course the ease with which it allows members to play after errant drives. However, at the highest level, it all but eliminates any strategy off the tee and turns professional golf into an even bigger slugfest. That means that it will likely be a bomber’s delight this week, but fortunately, Scottie Scheffler is long enough to play that game and straight enough to play it better than anyone else.
The major championships give us very few surprises anymore, going back to the beginning of 2012, so the last 57 majors played, the average world rank of the winners has been better than 15th in the world. So look at the highest ranked and longest drivers who are on form coming into the PGA Championship who also have great short games as the surrounds at Aronimink are very challenging. That’s Scottie Scheffler by a mile and then McIlroy and Cameron Young with a far bigger nod towards DeChambeau than I gave him at the Masters.
Club Junkie
A putter that I love and hate – Club Junkie Podcast
In this episode of the Club Junkie Podcast, we dive into one of the most interesting flatstick releases of the year with a full review of the new TaylorMade SYSTM 2 putters. After spending time on the greens, I break down what makes this design stand out, where it performs, and why it has me completely torn between loving it and fighting it. If you are into feel, alignment, and consistency, this is one you will want to hear about.
We also take a look at some of the putters in play on the PGA Tour last week. From familiar favorites to a few surprising setups, there is always something to learn from what the best players in the world are rolling with under pressure.
To wrap things up, I walk through the process of building a set of JP Golf Prime irons paired with Baddazz Gold Series shafts. From component selection to performance goals, this is a deep dive into what goes into creating a unique custom set and why this combo has been so intriguing.
Opinion & Analysis
From 14 handicap to pro: 4 things I’d tell golfers at 50
This year my 50th birthday. Gosh, where has the time gone?
As a teenager in rural Missouri, some of my junior high and high school years felt interminable. Graduation seemed light years away. But the older I get, the faster life seems to fly by.
I’m also increasingly aware of my mortality. My dad died recently. Earlier this year, a friend and fellow PGA of America professional and I were texting about our next catch-up. The next message I received was news of his unexpected passing at 48. Shortly after, a woman I dated in college succumbed to cancer at 51.
Certainly, one can share perspective at any age. Seniors help freshmen, veterans guide rookies. But reaching this milestone feels like as good a time as any to do one of those “what would I tell my younger self?” articles.
I’ve had a uniquely varied career in golf. I started as a 27-year-old, average-length-hitting, 14-handicap computer engineer and somehow managed to turn pro before running out of money, constantly bootstrapping my way forward. I’ve won qualifiers and set venue records in the World Long Drive Championships, finished fifth at the Speedgolf World Championships, coached all skill levels as a PGA of America professional, built industry-leading swing speed training programs for Swing Man Golf, helped advance the single-length iron market with Sterling Irons®, caddied on the PGA TOUR and PGA TOUR Champions, and played about 300 courses across 32 countries.
It’s been a ride, and I’ve gone both deep and wide.
So while I can consult and advise from a lot of angles, let me keep it to a few things I’d tell the average golfer who wants to improve.
1. Think About What You Want
Everyone has their own reason for picking up a golf club.
Oddly, as a professional athlete, I’m not internally driven by competition. That can be challenging, as the industry currently prioritizes and incentivizes competition over the love of the game.
For me, I love walking and being outdoors. Nature helps balance my energy. I prefer courses that are integrated into the natural beauty of their surroundings. I’m comfortable practicing alone. I’m a deep thinker, and I genuinely enjoy investigating the game, using data and intuition to unearth unique, often innovative insights. I’m fortunate to be strong and athletic, so I appreciate the chance to engage with my abilities. Traveling feels adventurous. I could go on.
You don’t have to overthink it like I do. For you, it might be as simple as hitting balls to escape work, hanging out with friends, and playing loosely with the rules and the score.
The point is to give yourself permission to play for your own reasons, and let that be enough.
But if improvement is your goal, thinking about your destination—and when you want to get there—is important, because it dictates the steps you need to take. When I set out to go from a 14-handicap to the PGA TOUR as quickly as possible, the steps I needed were very different from those of a working golfer trying to break 90 in six months. That’s also different from someone who just wants a few peaceful hours outside each week, away from work or family.
None of these goals are better than the others, but each requires a different plan that you can work backward from.
2. There Are Lots of Things That Can Work
One of the challenges of golf is that, although there are rules for playing, there aren’t clear, industry-wide standards for how to best play the game. There’s a lot of gray area.
You might hear a top coach or trainer insist that a certain move is the best way to swing or train. Then you dig a bit deeper and, much to your confusion and frustration, another respected coach or trainer says something completely different. I don’t think anyone is trying to confuse you—at least I hope not. It’s just where the industry is right now.
You have to be careful with advice from tournament pros, too. They might be great at scoring, but they’re also human and sometimes just as susceptible as amateurs to believing things that don’t really move the needle. Tour players might describe what they feel, but that’s not always what they’re actually doing when assessed with technology.
I recently ran a test on my YouTube channel (which connects to my GolfWRX article “How to use your hands in the golf swing for power and accuracy”), and, interestingly, two of the most commonly taught hand actions produced the worst results in the test.
Coaches can certainly help. If you find someone you connect with to help navigate, that’s great. But there are many ways to get the ball in the hole. In the current landscape, you may need to seek multiple opinions, think critically, and use your own intuition to discern what seems true and whose advice resonates with you.
I’d recommend seeking someone who is open-minded and always learning, because things constantly change. Absolutes like “correct” or “proper” should raise a red flag. AI can be useful, but it tends to confidently repeat popular advice, so proceed with caution.
3. Get Custom Fit
If you’re serious about becoming a better player, getting custom fit is hugely important. There’s no sense fighting your equipment if you don’t have to. Most better players get fit these days and, if they don’t, they’re usually skilled enough to work around clubs that aren’t ideal.
If you plan to play for a long time, it’s worth spending a little more upfront to get something that truly fits you and your game, rather than continually buying and discarding equipment.
Equipment rules haven’t really changed significantly since the early 2000s. To stay in business, manufacturers keep pushing those limits. If you pull a bunch of clubs and balls off the rack and test them, you’ll find differences. I’ve tested two new drivers and seen a 30-yard total distance gap. Usually, the issue isn’t bad equipment; it’s that the combination of components simply isn’t the best fit.
It’s like wearing a new pair of floppy clown shoes. Sure, they’re shoes—but you won’t sprint your best in them compared to track shoes that fit perfectly.
Be wary of what’s called custom fitting, too. Sometimes the term is used as a marketing strategy rather than an actual fitting. In some retail settings, fitters may be incentivized to steer you toward higher-priced components. That doesn’t automatically mean it’s not the best fit, but you should be aware of potential biases.
I learned a version of this lesson outside of golf. Years ago, I bought a tennis racquet at a big box store from a seemingly knowledgeable employee who thought it would suit me best. The racquet gave me tennis elbow, and I spent months recovering with rest and acupuncture. The next season, I invested more time and money to find what actually fit me, and I walked away with something amazing that I still play with years later.
So if you’re going to get fit, be smart about it.
Find someone you believe has deep knowledge—possibly with certifications, but not necessarily. Make sure there’s a wide inventory across many brands. Check recent reviews for the individual fitter if possible. Make sure you trust that the fitter has your best interests at heart. If they’re wearing a hat or shirt with a specific brand’s logo, proceed with caution. Unless you specifically want a certain brand or look, be wary of upsells, especially if two options perform nearly the same.
Also, while golf is called a sport of integrity, there’s a thread of manipulation in the industry. I once drafted an equipment article for an industry magazine, structured just like one of their previous popular stories, with matching word count and great photos. The assistant editor loved it; it was useful to readers and required little work on his part. But the editor-in-chief nixed the story. When I asked why, I was told it was because I wasn’t an advertiser. It turned out the article I’d modeled mine after was a paid ad cleverly disguised as editorial content.
I really dislike games, clickbait, and fear-based manipulation. I hope this changes, but golfers deserve to know it exists.
4. Distance and Strategy Matter
There’s a real relationship between how far you hit the ball and your scoring average, even at the PGA TOUR level.
I experienced this early in my pro career. I started as a power hitter, swinging in the high 120s and breaking 200 mph ball speed with a stock driver.
Back then, some instructors advised swinging at 80%, so I tried slowing down for more accuracy. That worked fine on shorter, tighter courses. But on longer setups, I was coming into greens with too much club, and par 5s stopped being
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HoVidos
Apr 16, 2020 at 4:11 pm
Excellent website. Plenty of useful information here. I’m sending it
to some pals ans also sharing in delicious. And naturally, thanks for
your sweat!
Anonymous
Jul 29, 2019 at 2:41 pm
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Backshwing King
Jul 23, 2019 at 9:46 pm
Thank the golf God’s it wasn’t Eldrick’s driver that was found illegal. OMG, the world would have stopped spinning and they’d be trying to strip him of his umpteen majors!!
Lance
Jul 22, 2019 at 9:18 pm
There’s a reason they test a bunch of heads at a time. Looking for the hottest one or two
jgpl001
Jul 22, 2019 at 5:46 pm
Come on guys, get real
Do you think this would make ANY difference in The Open into a 25 mph headwind and/or heavy rain?
Even on a perfect day in perfect conditions its not even 1/2 club…and thats bang out of the middle
Non-story, move on
xander
Jul 22, 2019 at 3:23 pm
OEM?
chris
Jul 22, 2019 at 2:44 pm
I was curious about if or how then rules account for normal wear of a golf club potentially making said club illegal. Here’s what the rules officially say:
(1) Conforming Clubs. In making a stroke, a player must use a club that conforms to the requirements in the Equipment Rules:
A club used to make a stroke must conform not only when the club is new, but also when it has been deliberately or accidentally changed in any way. But if the performance characteristics of a conforming club change because of wear through normal use, it is still a conforming club.
Seems to me that it’s very unclear. If a driver is tested and deemed legal on day one and then becomes too hot over time due to normal use…is it conforming or not?
Ballstriker's R us
Jul 22, 2019 at 12:09 am
Wait a minute, pros are swingin’ illegal equipment?! No waaaaaaaay, it can’t be! I never thought it could even be a possibility!! Oh wait, and now you’re telling me they had NO IDEA? OMG! As good ‘ol John McEnroe would say, “You can’t possibly be serious!” These manufacturers and pros are a total crack up. We’re all being takin’ for fools!! Of course they know WTH they’re doing! The shock and awe of it all! The outrage! My innocence is now lost. Sooooo sad I am, thinking everybody was playing fair. Hahahaha!! Lol! What a crack’up
tis confusion
Jul 22, 2019 at 12:40 am
?…You’re incorrect
gery katona
Jul 21, 2019 at 9:13 pm
Rules are rules, but frankly the differences we’re talking here are pretty much meaningless and more about marketing. Back when COR was used as the metric to determine the trampoline effect there was a big deal about .083 COR vs .086, the old standard. It was determined that for every .001 COR, the difference in yardage was 1.5~2 yards. So, the range between .083 and .086 was 4.5~6 yards which is nothing. Now we’re are talking about even smaller ranges which frankly are meaningless in terms of benefit.
Phil
Jul 21, 2019 at 3:19 pm
> We’re talking about .003 microseconds!
3 microseconds = 0.003 milliseconds. hth.