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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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Ryan Barath is part of the Digital Content Creation Team for GolfWRX. He hosts the "On Spec" Podcast on the GolfWRX Radio Network which focuses on discussing everything golf, including gear, technology, fitting, and course architecture. He is a club-fitter & master club builder with more than 17 years of experience working with golfers of all skill levels, including PGA Tour players. He is the former Build Shop Manager & Social Media Coordinator for Modern Golf. He now works independently from his home shop and is a member of advisory panels to a select number of golf equipment manufacturers. You can find Ryan on Twitter and Instagram where he's always willing to chat golf, and share his passion for club building, course architecture and wedge grinding.

9 Comments

9 Comments

  1. jgpl001

    Jul 31, 2019 at 9:27 am

    The boron made the S18’s feel like a rock and Mizuno know this was a mistake

    I’d rather replace my wedges more often to keep the soft forged feel and so would many others

    If your want forged wedges you know they don’t last and accept that

    Saying that I will be waiting for the release of these (and those MP20’s) with anticipation

  2. Dave

    Jul 17, 2019 at 11:00 pm

    “ballon”

  3. Pelling

    Jul 17, 2019 at 7:48 pm

    How can Mizuno claim that Boron doesn’t impact feel?

  4. justsayin

    Jul 16, 2019 at 4:45 pm

    They’re doing that Fourteen thing where it’s thicker in the high toe.

    • M

      Jul 16, 2019 at 10:02 pm

      Which Vokey and Ping have already copied.

      • DB

        Jul 17, 2019 at 9:16 am

        Yeah, not sure you can make the case that PING copied that. Their old wedges are the OG thick high toe.

  5. Travisty

    Jul 16, 2019 at 12:57 pm

    Release date?

  6. August

    Jul 16, 2019 at 11:56 am

    You had my curiosity but when a raw version was mentioned, well then you had my attention.

    • Matthew Cox

      Jul 17, 2019 at 4:47 am

      I’m sure you can afford it Monsieur Candie.

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Whats in the Bag

Dustin Johnson WITB 2020

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Driver: TaylorMade SIM (10.5 @ 10 degrees, D4 swing weight)
Shaft: Fujikura Ventus Black 6 X (tipped 1 inch, 45.75 inches)

Fairway wood: TaylorMade SIM Max (15 degrees)
Shaft: Aldila RIP Alpha 90 X

Hybrid: TaylorMade SIM Max Rescue (22 @ 19 degrees)
Shaft: Project X HZRDUS Black 105 X

Irons: TaylorMade P790 (3), TaylorMade P730 DJ Proto (4-PW)
Shafts: True Temper Dynamic Gold Tour Issue X100 (soft stepped)

Wedges: TaylorMade MG2 (52-09, 60-10 @ 62 degrees)
Shafts: KBS Tour Custom Black 120 S

Putter: TaylorMade Spider Tour Mini
Grip: SuperStroke Traxion Pistol GT 1.0

Ball: TaylorMade TP5

Grips: Golf Pride Tour Velvet 58R (1 wrap 2-way tape + 2 wraps left hand, 3 right hand)

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Top 10 clubs of 2003—inspired by Adam Scott’s Titleist 680 irons

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As has been well documented, Adam Scott recently won the Genesis Invitational with a set of Titleist 680 blade irons, a design that was originally released in 2003. One of the great benefits of being one of the best players in the world is you don’t need to search eBay to find your preferred set of 17-year-old irons. Titleist has been stocking sets for Mr. Scott—even to the point of doing a limited production run in 2018 where they then released 400 sets for sale to the general public.

A lot of time has passed since 2003, and considering the classic nature of Scott’s Titleist 680, I figured now was a good time to look back at some other iconic clubs released around the same time.

Ping G2 driver

This was Ping’s first 460cc driver with a full shift into titanium head design. The previous Si3 models still utilized the TPU adjustable hosel, and this was considered a big step forward for the Phoenix-based OEM. The driver was a big hit both on tour and at retail—as was the rest of the G2 line that included irons.

TaylorMade RAC LT (first gen) irons

The RAC LTs helped position TaylorMade back among the leaders in the better players iron category. The entire RAC (Relative Amplitude Coefficient) line was built around creating great feeling products that also provided the right amount of forgiveness for the target player. It also included an over-sized iron too. The RAC LT went on to have a second-generation version, but the original LTs are worthy of “classic” status.

TaylorMade R580 XD driver

Honestly, how could we not mention the TaylorMade R580 XD driver? TM took some of the most popular drivers in golf, the R500 series and added extra distance (XD). OK, that might be an oversimplification of what the XD series offered, but with improved shape, increased ball speed outside of the sweet spot, and lower spin, it’s no wonder you can still find these drivers in the bags of golfers at courses and driving ranges everywhere.

Titleist 680MB irons

The great thing about blades is that beyond changing sole designs and shifting the center of gravity, the basic design for a one-piece forged head hasn’t changed that much. For Adam Scott, the 680s are the perfect blend of compact shape, higher CG, and sole profile.

Titleist 983K, E drivers

If you were a “Titleist player,” you had one of these drivers! As one of the last companies to move into the 460cc category, the 983s offered a classic pear shape in a smaller profile. It was so good and so popular, it was considered the benchmark for Titleist drivers for close to the next decade.

Cleveland Launcher 330 driver

It wasn’t that long ago that OEMs were just trying to push driver head size over 300cc, and Cleveland’s first big entry into the category was the Launcher Titanium 330 driver. It didn’t live a long life, but the Launcher 330 was the grandaddy to the Launcher 400, 460, and eventually, the Launcher COMP, which is another club on this list that many golfers will still have fond memories about.

Mizuno MP 33 irons

Although released in the fall of 2002, the Mizuno MP 33 still makes the list because of its staying power. Much like the Titleist 680, this curved muscle blade was a favorite to many tour players, including future world No. 1 Luke Donald. The MP 33 stayed in Mizuno’s lineup for more than four years and was still available for custom orders years after that. Unfortunately, if you are looking for a set now you are going to have to go the used route.

Callaway X-16 irons

The Steelhead X-16 was a big hit at retail for Callaway. It offered greater forgiveness than the previous X-14’s but had a more compact shape with a wider topline to inspire confidence. They featured Callaway’s “Notch” weighting system that moved more mass to the perimeter of the head for higher MOI and improved feel. There was a reduced offset pro series version of the iron, but the X-16 was the one more players gravitated towards. This is another game improvement club for that era that can still be found in a lot of golf bags.

Ben Hogan CFT irons

The Hogan CFTs were at the forefront of multi-material iron technology in 2003. CFT stood for Compression Forged Titanium and allowed engineers to push more mass to the perimeter of the head to boost MOI by using a thin titanium face insert. They had what would be considered stronger lofts at the time sounded really powerful thanks to the thin face insert. If you are looking for a value set of used irons, this is still a great place to start.

King Cobra SZ driver

In 2003, Rickie Fowler was only 15 years old and Cobra was still living under the Acushnet umbrella as Titleist’s game improvement little brother. The Cobra SZ (Sweet Zone, NOT 2020 Speed Zone) was offered in a couple of head sizes to appeal to different players. The thing I will always remember about the original King Cobra SZ is that it came in an offset version to help golfers who generally slice the ball—a design trait that we still see around today.

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Today from the Forums: “The importance of wedge fitting”

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Today from the Forums we delve into a subject dedicated to wedge fitting. Liquid_A_45 wants to know if wedge fitting is as essential for golfers as iron fitting, and our members weigh into the discussion saying why they feel it is just as imperative.

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.

  • Z1ggy16: “Super important if you’re a serious golfer. Even better if you can get fit outdoors on real grass and even go into a bunker.”
  • ThunderBuzzworth: “The biggest part of wedge fitting is yardage gapping and sole grinds. If you have a grind that doesn’t interact with the turf in your favor, it can be nightmarish around the greens. When hitting them try a variety of short game shots with different face angles etc. with the different grinds to see which one works best for what you need.”
  • Hawkeye77: “Wedge fitting I had was extremely beneficial when I got my SM6s a few years ago. Mostly for working with the different grinds and how they interacted with my swing and on different shots and having an eye on my swing to help with the process and evaluate the results. My ideas of what grinds were right for me based on researching on Titleist, etc. just were not correct in 2/3 of the wedges I ended up with as far as the grinds were concerned. Good to have an experienced fitter available to answer questions, control variables, etc.”
  • cgasucks: “The better you get at this game, the more important wedges are.”

Entire Thread: “The importance of wedge fitting”

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