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Spotted: Mizuno MP-18 SC Irons



A little more than a month after Jhonnatan Vegas debuted Mizuno’s yet-to-be-announced MP-18 muscleback irons at the Masters, a cavity-back versions of the irons has appeared on the USGA’s Conforming Club List. The new irons, which are labeled MP-18 SC, are listed in both left- and right-handed versions.

It’s probably a safe bet that SC stands for “Split Cavity.” It’s also clear from the photo that the irons are constructed with Mizuno’s Grain Flow Forging Process and 1025E Carbon Steel.

9_Mar_mono08A thanks to GolfWRX Member jrshelby for bringing the new listing to our attention through his forum post. Click through to see what GolfWRX Members are saying about the irons in our forums, where Outlier10 and others are already salivating over the idea of an MP-18 combo set (cavity back long irons, blade short irons).

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  1. TONEY P

    Jul 24, 2017 at 11:54 am

    Seen something similar years ago, but they probably feel better.

  2. swingie

    Jul 7, 2017 at 10:34 am

    Cross between nike split cavities and ping EI1 in looks – gorgeous!

  3. golfraven

    May 13, 2017 at 2:46 pm

    I am very confused with Mizuno’s mode numbering first of all and now the SC addition. What is it, a cavity-back, a specked down muscle-back or a freak of nature? Can someone tell me what the successor of the MP-25 will be called? Anyway, its time for new MPs so bring those on pronto.

  4. Karl

    May 10, 2017 at 10:17 am

    Like all Mizuno irons I bet with the right shaft flex and the ability to hit the sweet spot they will play fantastic….I finely got old enough and slow enough had to give up and go back to Pings as the sweet spot kept being missed along with the green.

  5. Tom Duckworth

    May 8, 2017 at 10:47 pm

    A little bit Ping iBlade looking. Not that it matters. I wonder if there is much tech under the hood.
    If not I don’t see much to get a worked up about. A design that has been around for decades.
    I’m sure they feel nice and play like a blade would and I do like to break out my old blades a play them from time to time but I just don’t see anything that says I must go out and try these.

  6. Eric B

    May 8, 2017 at 9:41 pm

    You know when the JPX 900 tour looks better than the new MP… Someone done goofed. Also the MP-66 should’ve been the new MP in the US not this. If it ain’t broke don’t fix it

  7. SH

    May 8, 2017 at 12:12 pm

    Whatever happened to the diamond shaped muscle areas.

  8. Peter

    May 8, 2017 at 11:07 am

    They look like the Snake Eyes 600C irons.

  9. ooffa

    May 8, 2017 at 10:37 am

    They are nice but the don’t even come close to being as good as the PXG’s. I guess if you wanted a second tier club to the PXG’s you should buy the Mizuno.

    • Dj

      May 8, 2017 at 12:07 pm


    • sumsum

      May 8, 2017 at 1:25 pm

      you may just be the coolest person I’ve ever seen comment on here. If not you must be the smartest, since you’ve never hit the new Mizuno irons, or seen them, or held them in your hand, yet you can already comment on their performance. This is me tipping my hat to your vast knowledge!…. and in case you can’t tell I’m being sarcastic.

      • ooffa

        May 8, 2017 at 2:46 pm

        dumdum, oops, sorry, sumsum. Ask DJ to explain the joke to you.
        It’s super weird when you write a sarcastic comment but don’t recognize one yourself.

    • birdie

      May 9, 2017 at 1:00 pm

      lol excellent troll.

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Whats in the Bag

Justin Thomas’ winning WITB: 2019 BMW Championship




Driver: Titleist TS3 (9.5 degrees)
Shaft: Mitsubishi Diamana BF 60TX


3-wood: Titleist TS3 (15 degrees)
Shaft: Mitsubishi Tensei CK Pro Blue 80TX

5-wood: Titleist 915Fd (18 degrees)
Shaft: Fujikura Motore Speeder VC 9.2 Tour Spec X

Irons: Titleist T100 (4-iron), Titleist 718 MB (5-9)
Shafts: True Temper Dynamic Gold Tour Issue X100

Wedges: Vokey Design SM7 (46, 52, 56 degrees), Vokey Design SM6 (60 degrees)
Shaft: True Temper Dynamic Gold Tour Issue S400

Photo via Vokey Wedge Rep Aaron Dill

Putter: Scotty Cameron X5

Grip: SuperStroke Pistol GT Tour

Ball: Titleist Pro V1x

View this post on Instagram

How @justinthomas34 marks his @titleist Pro V1x ????

A post shared by Ben Alberstadt (@benalberstadt) on

Grips: Golf Pride Tour Velvet Cord

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Forum Thread of the Day: “Best ball for players with slower swing speeds?”



Today’s Forum Thread of the Day comes from ghoul31 who created a thread dedicated to finding the ideal golf ball for players with slower swing speeds. Our members have their say on what is the ball most suited to slower swing speeds, with a variety of models receiving a mention.

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.

  • Hogan9: “My SS is 80 to 85. I play the Titleist AVX. Many people on these forums tell it’s wrong for me. I’ve tried several brands and types over the last year ( Pro-V-1 and 1X, Cally Supersoft and Chrome Soft, TM TP5X, Wilson Duo Soft and the Snell MTB. The AVX gives me the best overall performance for my game. I’ve had to slightly adjust to how it reacts on chips and pitches, but the extra distance off the tee is well worth it. “
  • North Butte: “Maybe 90mph driver swing on a good day. Driver 205-ish hit 6-iron from 150. Pro V1x but I have played AVX, B330, TP5 with pretty much similar results to my favorite V1x. Also played the Chrome Soft for a while but it seemed to fly a little low and sometimes have trouble holding greens (or maybe I just didn’t give it a long enough chance to know for sure).”
  • Hat Trick: “Pro V1X – Spin and higher launch keeps it in the air longer, but at the same time that spin holds the greens – SS 96-98 mph.”
  • Kmac: “My SS is right around 95-100, and I find the QST to the perfect for my game. I will also play the AVX or Chrome Soft Truvis. But for the money, nothing beats the QST.”

Entire Thread: “Best ball for players with slower swing speeds?”

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Forum Thread of the Day: “Single length irons stunting development?”



Today’s Forum Thread of the Day comes from rbark11 who has sparked an interesting debate over single length irons in our forums. Rbark11 has been playing single length irons for the past seven months, and he is concerned that he may have issues changing back to regular length irons. Our members give their take on the matter, as well as discussing single length irons in general.

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.

  • mcs4: “No, it will not. Both my father and I are currently playing Cobra One Length irons after decades of playing variable length irons. It took both of us maybe a few rounds to feel comfortable with the switch. This weekend I played a round with my old irons, and it was different but not a big deal. My opinion is that there are pros and cons with each approach, but I don’t think picking one will make any particular negative impact on your ability to later switch to the other.”
  • Quadra: “I’ve played both. Right now I am back to VL clubs ( Wishon 560 irons). Find VL gives me more shot-making options. With uneven lies, especially with the ball above or below foot level, the shot seems easier with a more upright or flatter lie, rather than trying to manipulate a shot from clubs with only a single length/lie. VL = more shot possibilities.”
  • Aucaveman: “I played Cobra ftbo for a year. Shot my best scores ever. Our club switched to Mizuno exclusively, so I had my first real fitting. I switched to the 919 forged and had to sell the Cobras to fund the mizunos. Really wished I hadn’t. I really liked the Cobras. The shafts in the Mizuno’s are better suited for me but had I put the same shafts in the Cobras; I’d prob been better off. At some point, I’ll prob do it and go back to one lengths. I was perusing eBay yesterday actually.”
  • Brandons68: “I think that the consistency you gain from SL irons is pretty great. I have not played them personally, but have talked to several people that have, and they really like the feel of the irons and the fact that they swing every iron the same because they are all the same length.”

Entire Thread: “Single length irons stunting development?”

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19th Hole