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Bryson DeChambeau — winner of the 2015 U.S. Amateur and NCAA Men’s Individual Golf Championships and recently turned professional — plays with a unique set of irons and wedges that all measure the same length.

In my video, I review Sterling Irons from Tom Wishon and Jaacob Bowden that are designed to also measure one length throughout the set.

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Mark Crossfield has been coaching golf for more than 20 years, and has enjoyed shaping the digital golf world with fresh, original and educated videos. Basically, I am that guy from YouTube. You can connect with Mark on Periscope (4golfonline) and Snapchat (AskGolfGuru), as well through the social media accounts linked below.

33 Comments

33 Comments

  1. Diogenes

    May 4, 2017 at 12:12 pm

    Just tried two Pinhawks (20 and 25 degrees numbered #4 and #5) for two rounds now and like them very much so far. Cannot confirm the reported low ballflight. They behave like a regular #3 and #4 iron which corresponds to the loft. Still struggeling with the 20 degrees iron played from the fairway but the 25 degrees works already great! Hit it much more consistently compared to my regular #4 and even #5 iron. Cannot complain about the distance as well. The shafts are 36,5 inches (FST 115 stiff) and the lie is 63,5 degrees (one upright). I was not looking for a single length set but replacing the longer irons definately makes sense to me! 🙂

  2. Warwick b

    Jun 20, 2016 at 3:36 am

    It’s a shame they aren’t available for lefties

  3. Warwick b

    Jun 20, 2016 at 3:35 am

    Shame they aren’t available for lefties

  4. Scott

    Jun 15, 2016 at 2:37 pm

    Great review of a very interesting concept. It is great to see what a better player things of something unique.

  5. Ally

    Jun 15, 2016 at 6:15 am

    Mark great review on tom wishons sterlings. I myself had a set of conventional irons build to SI. And they performed great the short irons were very accurate we did have a bit of adjusting to do with the 4&5 irons the trajectory was too low and it was loosing distance. We ended up increasing loft and now all is fine. Did notice though that on the 4&5 irons i did need to have at least 80mph swing speed.. Overall i really believe the concept works. Cheers

  6. Tour Pro

    Jun 9, 2016 at 6:22 am

    30 years a bit of a stretch to be calling it a fad

  7. leon

    Jun 7, 2016 at 3:53 pm

    The single length concept is fine. But just don’t understand why people (especially golfer) always try (and hope or beg) to find an instant cure to their swing.

    If you cannot handle the 4,5 or 6 iron, try the hybrids, they are much easier to hit and launch high and straight. Or just make the 4,5 and 6 have the same length. If you cannot take care of 7,8,9 and P, sorry, dude. You really need to work on your swing, seriously.

    Use the same length for 5-SW may sound intriguing for some people, but you still need to deal with the different lengths of your driver, fairway wood and hybrid. So why bothers?

    I guess 95% of people who would like to try the single length irons, have some challenges to hit the 4 and 5 or even the 6 iron. Just use the hybrids or hybrid-iron combo set (should be around $200-$300) rather than spending $1000 and look like a sucker.

    • Mike

      Jun 15, 2016 at 4:35 am

      The single length concept is AWESOME! I (was) a 1 HCP and can hit the 3 and 4 irons as well. But i definitely hit the 7 iron much more solid then my 4 iron.
      i now playing a single length set and hit the 4 as solid as my 7, or 9, or P. I loosed 5 yards. So who cares about 5 yards if you hit them MUCH better? I also use a hybrid and a driver. So i have 3 lengths in my bag. And thats pretty easy to handle.
      Sure, this is not for every one. But it makes the game a lot easier. Droped to +HCP this season…and this looks definitely not like a sucker! The + on the scorecard looks SEXY 😉

      • Tony

        Feb 28, 2017 at 11:01 am

        Would love to know more. I have been racking my brain on the single length concept. I’m a 3 handicap. There are 3 distinct versions and concepts of the single length out there with Cobra, Wishon and 1Iron Golf. How deep did you look into this and what advantages and disadvantages did you run into while trying to decide. I’m 5’7″ 8 iron 152 yds. thanks for your response

  8. Tom

    Jun 7, 2016 at 3:17 pm

    Say this Crossfield chap has a good looking swing.

  9. tlmck

    Jun 7, 2016 at 3:15 pm

    Given the cost of Sterlings and lack of local demos, I may just build a set of PinHawks when they become available again. I have an unused set of TT Command shafts in the closet that need something to do. Not unhappy with my Speedblades, but just another curious engineer.

  10. farmer

    Jun 7, 2016 at 12:51 pm

    I would like to see the results of a real round. The concept is very interesting, but for me, chipping and pitching with a 7 iron length wedge would be difficult. The idea makes sense, and it may be THE NEXT BIG THING.

    • Brown

      Jun 8, 2016 at 3:37 am

      Well why not just watch Dechambeau do it on the Tour then, silly

  11. Matty

    Jun 7, 2016 at 10:07 am

    Few things:
    1) Shouldn’t the offset be constant throughout the set? According to the specs, the offset is not the same throughout the set unlike the Pinhawk irons.

    2) Mizuno’s current wedges are single length at 35.25 inches, so at least that is a good place to start in terms of single-lengthening the wedges.

    • Jaacob Bowden

      Jun 7, 2016 at 10:12 am

      Historically, the low-lofted irons in single length sets would fly too low and the high-lofted irons would fly too high. The progressive offset slightly helps address this by moving the center of gravity forward and backward from head to head. This combined with some other built-in features help achieve similar peak shots heights throughout the set.

  12. Frank Xavier

    Jun 7, 2016 at 9:18 am

    Great commentary. It is an excellent demonstration of the viability of SLI’s. Mark does mention the possible benefits of single length to the new/beginner several times with the caveat that he never had the adjustment problem. I like to see golf as a staged learning process with the objective being to make arriving at the earliest and highest possible competency level the main objective. This approach tends to move new golfers to become much more enthusiastic about the game rather than less. Single length clubs when combined with systematic instruction will likely increase beginner and new golfer competency. Only systematic, quantitative data can definitely prove this point and as we know this information does not exist.

    I would go sofar as to suggest that standard SLI’s could easily be regarded as the beginning golfers friend; and upon reaching the 10 handicap level, graduation could occur to either longer clubs or SLI’s which have had the heads tweaked to achieve higher performance. Serious golf enthusiast’s especially those in the single digit handicap category commonly forget that 98% of golfers will never achieve a single digit handicap.

  13. Steve

    Jun 7, 2016 at 9:16 am

    They appear to be very accurate as well.

  14. Large Chris

    Jun 7, 2016 at 4:27 am

    Definitely interesting but worth a closer look at the numbers. The short irons seem to work very well, they address the main issue single length (I’ve tried the Pinhawks) has had, by lowering the peak height to a fairly uniform level (making them less hot off the face), and getting the gapping correct.
    However, only 19 yards difference is covering the 5 – 7 irons, and the peak height of the 5 iron has dropped down to 26 yards from 30, without any more spin, which suggests the loss of a few mph due to the shorter shaft is reducing ball speed and compromising distance too much, I would think Crosssfield is realistically 10 yards down on a standard modern 5 iron.

    • Mat

      Jun 7, 2016 at 5:11 am

      And that is what I’ve found as well. I’ve actually been tinkering with a 4-iron at 24, and then going to 6 at 29. Those pinhawks are 5º between all of them, but they don’t have the material differences. I’ve actually found that the long irons don’t get high enough, and that’s what causes gap crowding. This of course is based on my experience with “regular” heads. I think this really drives home the point that 8-iron and down is all about dialing in your distances, but some really do need that length at the top of the irons. My other set is 8i-58º within 1/8″ of an inch… all at D9. Then it’s standard 1/2″ steps. It isn’t as easy to hit, but the long iron problems don’t exist.

      Most second shots are within 150 yards, so all the better to get the 7/8iron and down the same.

    • Steve

      Jun 7, 2016 at 7:24 am

      The 5 & 7 numbers are a bit skewed by a mishit 5 and a shot wit the 7 that was 5 yards longer than the other 2. Also, the 7 iron was the only one with a peak height of 30. I suspect a larger sample would normalize the distances.

  15. snowman0157

    Jun 6, 2016 at 11:00 pm

    Totally makes sense. If you don’t need different lengths and lies to create the proper distance gaps, then why introduce those variables? I was always intrigued by the old Tommy Armour EQL irons. I predict these will sell Big and a create a wave of SLI players.

  16. Adam

    Jun 6, 2016 at 9:11 pm

    Title in the video says “sinle length”

  17. Jim

    Jun 6, 2016 at 7:46 pm

    This is hardly a fad. Moe Norman played SLI clubs and is one of the greatest golfers of all time. The truth is on the wall…SLI clubs can be very beneficial to anyone out there, just have to find a set.

    • kyle

      Jun 6, 2016 at 9:45 pm

      Moe didn’t use single length clubs during his actual playing career, just later on when he endorsed the natural golf stuff.

      That being said, SLI are probably a good option for some golfers.

    • es

      Jun 6, 2016 at 11:53 pm

      Moe Norman one of the greatest of all time? Maybe a great Canadian player or maybe a great ball striker… he could probably middle a 48inch 7 iron, not the ideal SLI user trying to find consistency…
      But SLI does have a great new ambassador – the Great in his own mind and future web.com player Bryson DeChambeau. Have not seen such celebration for a player yet to secure a PGA tour card with only 1 top 20 finish and 4 missed cuts in a row.

      • Credentials

        Jun 9, 2016 at 3:00 pm

        DeChambeau was the NCAA champ and US Amateur Champ in the same year. Not too many of those guys here on earth…. or elsewhere.

  18. mhendon

    Jun 6, 2016 at 7:25 pm

    Lol nice post… So true!

  19. Mat

    Jun 6, 2016 at 7:25 pm

    SLI is a great concept. I’ve posted on here plenty of times that I think almost every golfer would be better suited by a 1/4″ gapping or SLI. The hard part is that the lofts and ball apex get a bit funky when you take standard clubs and make them SLI. I think the hardest part about transitioning to SLI isn’t the equipment; it’s the mentality that irons are for exact distances, and not following the “distance iron” marketing. When you see guys hit their 6 iron 210 on the PGA, you get guys who want that same thing, and you end up with loft-jacking. If you can shed all of that baggage, and embrace that your irons are intended to get you an exact distance, things get better very quickly.

    • Jim

      Jun 6, 2016 at 7:49 pm

      Totally agree. I would think that 3/8″ would be far better than 1/2″ as well. I’m currently working to setup clubs using 1/4″ increments because the clubs will be far more consistent up and down the set.

  20. john

    Jun 6, 2016 at 6:56 pm

    i can hear a vlog coming, come on mark!

  21. John

    Jun 6, 2016 at 4:12 pm

    Love the reviews. These are very interesting to me. Wish there was a test set around here or I knew someone that had them to try out.

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Equipment

WRX Spotted: New TaylorMade P790 UDI

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It’s Open Championship week and that means course conditions are the talk of the town. Firm, fast, and windy conditions are expected on the links of Portrush, so we will be seeing a lot of players using driving irons that they might not otherwise play with week to week on the PGA Tour.

Not only are driving irons a hot item for players, but for OEMs launching new and prototype versions including TaylorMade, which has a new P790 UDI in some bags including Mr. Tiger Woods (credit to Rob Brooks on Instagram for the spot).

Like with many clubs just being seeded to tour, we don’t have official comment from the team at TaylorMade…but, like many times before, we have a couple of ideas based off the cosmetics of what might be in store if and when this thing comes to retail.

Some history: It’s been a while since TaylorMade introduced a new UDI (Ultimate Driving Iron) to its lineup.  There was the GAPR Low, which was very UDI “like” but the UDI as a whole never had an adjustable hosel. (There were Tour Issue versions of the GAPR Lo that had a fixed hosel and no adjustability)

The original (2017) P790 UDI

The “just-spotted 2020 (?)” version

The most recent UDI was the original P-790, but this new version has some distinct differences

  • Thinner sole. Based off the pictures, this new P-790 UDI has a thinner sole with more camber to help improve turf interaction. More camber and well-utilized bounce make any club more playable in varying conditions.
  • Shorter blade length. There is no such thing as computer screen calipers but from what we can tell when comparing side by side the new version is shorter. A shorter blade length means a CG closer to the hosel and more workability.
  • Higher toe. Just like the shorter blade length, a higher toe is often more appealing to more players (better players are generally the target for these types of clubs) and what that also “potentially” does is raise the CG. A higher CG will produce lower launching shots BUT with more spin (workability). To counter act the potential extra spin loft adjustments can be made pretty easily, since loft is one of the biggest factors in creating spin.

The one thing that is harder to compared is whats going on inside of this UDI (obviously). There is a screw in the toe, so it can be assumed that there is some sort of foam or material that helps support the face and improve the acoustics of this face thin-faced iron.

Just like we wait for the first group off early Thursday morning at Portrush, we’re just going to have to wait to see what’s really going on this new UDI too.

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Forum Thread of the Day: “Tiger Woods with a new Scotty Cameron at The Open”

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Today’s Forum Thread of the Day comes from No Gimmes who was quick to spot Tiger Woods preparing for this week’s Open Championship with a new Scotty putter. Woods has also been seen warming up for this week’s event at Royal Portrush with his old faithful on the greens, but our members have been discussing the thinking behind the 15-time-major champion’s potential change, as well as the putter itself.

*Photos from Golf Central’s ‘Live From The Open’ coverage

Here are a few posts from the thread, but make sure to check out the entire discussion and have your say at the link below.

  • TheMoneyShot: “I’m really surprised he is making the switch. Let’s see if it’s in the bag come Thursday.”
  • Hedgehog: “That topline and the alignment aid and all the smooth lines, gorgeous!”
  • MuniPukeLife: “Makes sense as his trusty NP2 is super light by today’s putter standards.”

Entire Thread: “Tiger Woods with a new Scotty Cameron at The Open”

 

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Mizuno T20 wedges: Let’s get spinning

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Spin.

We’re always trying to reduce it with our driver and increase it with our wedges for maximum control, but with the rules of golf being so strict, how do actually achieve a performance gain? Simple engineering…

This is the Mizuno T20 wedge.

It’s been a few years since we have seen a T (teardrop) wedge from our friends at Mizuno, and there is good reason.

Let’ get into a quick history lesson: before the JPX900 series was introduced, Mizuno had quietly been realigning the product cycles of the MP and JPX lines. You might remember back a few years ago now before the MP18s hit the scene that there was a bit of a lull in the MP line—so much, in fact, there was even a thread here on GolfWRX asking “Is Mizuno not making MP irons anymore?”

It was a naturally curious question to a company that always had very standardized release cycles, but it was a long-term play that has paid off tremendously. We now get “T” wedges with MP irons (MP20s to be exact), and we should (from everything I know) continue to see “S” Silhouette (more rounded profile) wedges with future JPX lines.

Before we get to what’s new, how about we first talk about what will be staying the same

  • Grain Flow Forged HD – like all new Mizuno irons, the T20s are made using the same forging process to increase the density of the material in the clubhead for an improved solid feel.
  • Boron – this little element when added to the 1025e mild carbon steel used in the wedges (we’re talking trace amounts equating to 3ppm – parts per million) increases the strength of the material by 30 percent—how crazy is that for chemistry? This improves groove life and has ZERO effect on club feel.
  • Variable Width & Depth Quad Cut Grooves – Like previous T and S wedges, the T20s will have quad cut grooves that will vary in shape based on the loft of the club. Lower lofted wedges are more narrow and deeper, while higher lofted wedges are wider and more shallow since impact happens at lower speeds this increases spin consistency.
  • Same beautiful Teardrop profile from address

So what’s new?

Flow. Just like the MP20s, engineers are bringing more a more extreme CG (center of gravity) shifting philosophy, or as Mizuno explains it, increased vertical moment of inertia to the wedges. As much as you (well maybe not “you,” depending on who you are) might think “a wedge is just a wedge” and loft is the only deciding factor for spin, you couldn’t be further from the truth. By relocating the CG throughout the set and changing the sweet spot height, engineers can further alter the launch and spin precisely for each loft.

It’s about gear effect—the higher you hit above the CG the less spin the ball with have, and the closer to or lower you make impact compared to the CG the more spin you will create. Either way these are wedges, so a 50 degree, for example, is still going to spin, but it is now more controllable (think less likely to ballon or get too high on full shots). On the other side of the equation, a 60-degree wedge will allow for even MORE trajectory and spin control for the low flying quick checkers with zip.

Now about that spin.

By the Rules of Golf, you can’t make grooves sharper, you can’t increase their volume, and you can only have so much surface roughness (sorry but that old Spin Doctor wedge is HIGHLY NON-conforming). So what do you do? You change the way you think about that surface roughness…

Hydroflow Micro Grooves

Instead of traditional laser etching parallel to the grooves, Mizuno engineers took a concept from the high-performance tire world and went perpendicular to the grooves and parallel to the direction the ball moves up the face to channel moisture away. This directional tread has proven to increase spin on shots especially in conditions with moisture up to 1,200 RPM (on a 60-yard shot), that’s a very tangible number. It’s not just about spin either: the more the friction that can be created also means more control on launch angle and less of a “floating” ball flight. That’s how those low zippers keep zippin’!

Don’t think for a second that Mizuno just changed the etching and was done with it. The process went through multiple iterations to figure out how they could improve its life (beyond the boron) and the solution was to etch before the chroming process to elongate the lifespan. The other groovy take for the T20s is the actual reconfiguration of the grooves. To get the bottom groove closer to the leading edge without having it disorient the overall look of the club and making it appear that the heel or toe is thinner on one side. The lowest groove has been shortened and centered.

All of these refinements; CG, micro-grooves, and reconfigured scoring lines add up to one thing: more control and improved shotmaking with your wedges.

Finishes, specs, and grinds

The wishes of many have been answered when it comes to the T20s, there will be a RAW finish (happy dance time) along with traditional chrome and the signature blue ion. Leftys will only be able to get chrome, but all the same options will be available as far as lofts and grinds.

Coming in lofts from 46-60 degrees, the grind options progress depending on the loft and bounce. Going from full-soled in the lower lofts to more aggressive back edge, and heel-toe relief in the 60 degree. These sole shapes came directly from Mizuno’s craftsman that worked with players and prototypes to determine exactly how the bounce and sole shapes should work in harmony.

All of this has come together to create Mizuno’s finest wedge to date.

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