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Mizuno Performance Fitting System



By Rob Miller

GolfWRX Staff

In golf, the name Mizuno is synonymous with great irons.  Chances are we all know a player – and probably a good one – that gamed ‘Mizzys’ growing up and hasn’t switched iron brands since.  Great feel combined with classic good looks is hard to beat.  Over the years, Mizuno expanded their lineup to include models for golfers of all skill levels while still staying true to its roots of function, clean looks and mostly ‘grain flow’ forgings.  Through the years, Mizuno irons have been consistent Gold and Silver winners on Golf Digest’s annual Hot List.

Of course, when you have many different iron models to chose from, you need to properly fit golfer to club and shaft — not necessarily an easy task.  Mizuno created their Performance Fitting System to help us out. GolfWRX is working with Mizuno to fit some of our equipment reviewers into the proper iron/shaft combo.  I recently was invited to see what it was all about.

I have been through a few fittings before, but never the Mizuno Performance Fitting System.   The claim is “In just a few swings, Mizuno’s Shaft Optimizer ends the guesswork by measuring five critical aspects of your swing to determine your unique Swing DNA. “  Having tried it out, I have to say it works great.

Your information is entered into Mizuno’s patented Shaft Optimizer software, which then recommends a shaft with performance characteristics perfectly matched to your individual swing.

I took about a dozen swings, but honestly as little as three is all it really took. My numbers came up and created my own swing signature which measured:

  • Club Head Speed: How fast the club head and shaft are moving during your swing.
  • Tempo: How quickly you transition from your backswing to your downswing.
  • Shaft Toe Down: Measures how far the shaft bends in a downward direction during your downswing.
  • Shaft Kick Angle: Measures how far the shaft bends forward during your downswing.
  • Release Factor: How and when the club head and shaft are released during the downswing

The kicker is the Shaft Optimizer is it does not care about the quality of your strike of the ball.  Good contact or bad, you have a swing signature and its job is to find it.

Once the data was input by my fitter, the system gave me a few shaft suggestions, including Dynalite Gold XP and Project X 5.0.

With the Shaft Optimizer portion done, it was time to decide on clubhead / shaft combo by hitting balls at the range.  I alternated between MP-59 and JPX-800 Pro heads with Project X and Dynalite. Ultimately, deciding on JPX-800 Pros with Dynalite XP S300.  This choice is up to you.   Next half-dozen hits off a lie board confirmed 2 degrees upright.

The length of the process varies depending on how many balls you want to hit.  Being a range rat, I took my time, but you could be done easily in under an hour.

So here’s the best part.  Your Mizuno fitter inputs your order directly into the system.  Would you rather bag an MP-R12 50* rather than your set’s Gap Wedge?  You can swap out wedges on the order screen.  Rather play a Fli-Hi than your 4 iron?  Done.  Want a mixed set of 800 Pros and MP-59s?  Mizuno can do that too (I was tempted). It’s all customizable.

Finally, Mizuno has perhaps the best turnaround in the industry.  Orders are submitted by the rep on the spot and you’ll be bagging your new Mizunos within  7-10 days.  In my case, it was seven on the nose.  Mizuno touts this as ‘the best turnaround in the industry’.

So, how are the irons, you ask? (After all, the proof is in the pudding). Happy to say I entered new territory with my Mizunos.  I shot my best score ever, 2-over par for an 18 hole round, just the third time I put them in play.

In the market for new irons?  With iron models made for every type of golfer, you can perhaps find your perfect set of Mizunos–  and go from custom fitting to the course in about seven days.

Look for Mizuno Iron reviews from GolfWRX very soon.

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Rob is a golf junkie that has been involved with GolfWRX since its inception in 2005. From designing headcovers, to creating logos to authoring articles to social media management to sales and marketing, Rob has done it all. Born and bred in NJ. Favorite golfers: Phil, Freddie. Favorite club: Driver.



  1. tony

    Aug 15, 2014 at 10:19 pm

    I had the same results and have played both the dg s300 and dnlite s300s. I do get a tiny bit more airtime with the lights but ive always used the dg s300s so thats probably why i fit them honestly.

    this is real fitting here, just like the pros.

  2. Pingback: Custom Fitting by Mizuno | Help and Aid Businesses

  3. Andrew Adamonis

    May 21, 2012 at 11:30 am

    This whole concept is based on the old True Temper Shaft Lab loading device. It is the real deal. It can work with woods to with a proper fitter.

  4. Anthony

    May 20, 2012 at 4:31 am

    I actually just went to a fitting today. I must say I was impressed by the shaft optimizer. HOWEVER, i feel as a higher handicap that its not something i would take true to heart. To be honest this wasn’t my first fitting with Mizuno. I am a Mizuno nut btw. Anyhow fitting 1 told me to go with standard dynamic gold shafts stiff. Second fitting told me to go with dynamic XP extra stiff. ???? i was confused. I honestly feel that for someone who may not have their swing down consistently it may be a waste of time to get fitted clubs and when you change your swing you have to change to another. Comments thoughts?

    • MJ

      Nov 8, 2012 at 8:55 pm

      Hmm.. In fact, DG stiff and Dynalite (not “dynamic” btw) XP extra stiff are pretty similar in flight and spin except DG stiff might be slightly heavier.

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Rory McIlroy’s putter builder speaks on his winning TaylorMade Soto proto



It’s no secret that Rory McIlroy’s biggest weakness has historically been with his putter. But ahead of the Arnold Palmer Invitational, which he won by two shots, McIlroy made a putter switch and ended up with just 100 putts for the week — the lowest in his PGA Tour career. He also finished first in the field in Strokes Gained: Putting, and put on a putting display for the ages on Sunday to shoot 64 (he birdied 5 of the final 6 holes).

Related: Rory’s Winning WITB from the 2018 Arnold Palmer Invitational 

What’s so special about this putter? To figure that out, I spoke with TaylorMade’s International Tour Director Chris Trott, who worked directly with McIlroy on building his new putter.

Trott explains that McIlroy showed up to Bay Hill “with a different kind of confidence” that week. His caddie, Harry Diamond, showed up to the TaylorMade Tour Truck on Monday night (McIlroy wasn’t on site Monday) with a previous putter of McIlroy’s — a Scotty Cameron that he won multiple majors with, according to Trott — and he wanted to have a new putter built that matched up with the specs of it. “He came with a plan and he wanted to be on spec,” says Trott. So the TaylorMade team sent Harry off to the hotel Monday night with a TaylorMade TP Soto with no face insert, one with an insert, some other variations, and they sent him back to the hotel with a few Spiders, as well, according to Trott.

But since Trott says that McIlroy liked the feel of his previous gamer, Trott thought it was best to send a request back to TaylorMade’s offices in Carlsbad for a TP Black Copper Soto with a midslant neck and a Suryln insert in preparation for McIlroy’s arrival the next day. “Nine out of 10 times we already have a head with the insert in it [inside the tour truck], but this putter is so new,” says Trott. “It’s not even out yet.”

Trott says McIlroy showed up to the Tour Truck the next morning, but he “wasn’t enamored” with the options, although he did fancy the solid face Soto. Here’s the photo notes that Trott took of the solid-faced Soto that McIlroy liked.

Good thing Trott sent that request back to the office, though! The first words out of McIlroy’s mouth when he saw the new TP Black Copper Soto slant neck proto with the Suryln insert, according to Trott, were “Hmm, that’s nice.” But he wanted to tweak the specs. He wanted the putter an eighth of an inch shorter and 3-to-4 swingweight points lighter. Eventually, Trott also added 0.25 degrees of loft to the face compared to McIlroy’s gamer, and made it 1-degree more upright.

The new putter Trott concocted also had a Golf Pride Tradition grip on it, and McIlroy had him change it to a TaylorMade Red Cap Pistol grip.

So, McIlroy took to the putting green with the solid face Soto and the Black Copper slant neck proto with the Surlyn insert. After a few drills, McIlroy decided he liked the feel and look of the Trott concoction, and while he really liked the Black Copper finish, he did have concerns about how it would hold up in the weather.

In the end, McIlroy decided on the TaylorMade TP Black Copper Soto proto. Here are the photo notes that Trott took from inside the trailer while holding McIlroy’s (eventual) winning putter.

The numbers in the photo above mean the specs of McIlroy’s putter are as follows:

  • Weight: 508.3 grams
  • Swing weight: D1
  • Lie angle: 71.25 degrees
  • Loft: 2.75 degrees
  • Length: 34.25 inches

Here are photos that we shot of the putter on Tuesday of the 2018 WGC-Dell Technologies Match Play:

It’s safe to say McIlroy made the right decision for Bay Hill, and according to Trott, he’ll likely be sticking with the putter going forward. And if not, surely Trott and his team will be there with 7-10 more putter options for McIlroy to try out and hand-pick from. Must be nice to be Rory!

See what GolfWRX Members are saying about Rory’s putter in our forums.

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Spotted: Phil Mickelson’s Callaway Mack Daddy PM-Grind “2.0” prototype wedge



More than three years ago, Callaway released a Mack Daddy PM Grind — PM stands for Phil Mickelson — that had a raised toe section for a higher center of gravity. Mickelson liked the PM Grind wedges because the designs allowed him to get more spin on open-faced shots, and also because they created a low trajectory with more spin on square-faced shots, said Roger Cleveland in 2015.

Since 2015, Mickelson has been playing various lofts of Callaway Mack Daddy PM Grind wedges, and with various amounts of lead tape.

On Tuesday at the 2018 WGC-Dell Technologies Match Play event, however, we spotted a new Mack Daddy PM Grind “2.o” wedge in his bag that has a different look. Is this the introduction of a new wedge release from Callaway?!


We spoke to a Callaway representative who, in so many words, said this is just Phil being Phil and tinkering with equipment, not a product launch.

“This is a Phil-specific prototype version of the Mack Daddy PM-Grind Wedge,” said a Callaway representative. “We built it specifically for him. He likes to tweak his clubs, of course, and this is just an example of that. Always a tinkerer!”
We’ll be sure to update you on more information about the PM Grind 2.0 prototype wedge when we have it.
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Adidas launches special edition black Boost colorway



Adidas staffers will be collectively back in black at the WGC-Dell Technologies Match Play this Thursday.

The company announced special edition black colorways for its Tour360, Tour360 Knit, and Crossknit 2.0 models, which players will wear, along with head-to-toe black, at the match play competition.

Adidas Tour360

“Boost changed the game for players when we brought it into our golf category,” said Masun Denison, global footwear director, adidas Golf. “Now with the introduction of this special edition colored Boost, golfers can add another style option to their lineup while still enjoying the benefits that only Boost can deliver.”

Adidas partnered with BASF to develop the proprietary Boost technology, which offers cushioning via highly elastic thermoplastic urethane (TPU) pellets that are then fused together with heat and molded into the midsole shape for each specific model. Adidas cites energy return, unmatched cushioning and comfort along with long-lasting durability as the key benefits of the technology.

Adidas Tour360 Knit

The special edition black Boost colorway is available now and will only be featured in the Tour360 family: Tour360 ($210), Tour360 Knit ($190), Crossknit 2.0 ($160). Supplies are limited.

Adidas Crossknit 2.0

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19th Hole