Equipment
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.
A 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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Whats in the Bag
Kevin Dougherty WITB 2023 (September)

- Kevin Doughtery what’s in the bag accurate as of the Nationwide Children’s Hospital Championship. More photos from the event in the forums.
Driver: TaylorMade SIM2 Max (8 degrees)
Shaft: Project X HZRDUS Smoke Green 70 6.5
Mini driver: TaylorMade 300 Mini Driver (13.5 degrees)
Shaft: Project X HZRDUS Smoke Green 80 6.5
Irons: PXG 0311 X Gen2 (3), PXG 0311 ST Gen4 (4-PW)
Shafts: Project X LZ
Wedges: Titleist Vokey Design SM9 (52-12F, 56-14F, 60-04L, 60-12D)
Shafts: Project X LZ 6.5 (52), True Temper Dynamic Gold Tour Issue S400 (56, 60)
Putter: Scotty Cameron prototype
Grips: Golf Pride Tour Velvet Align
More photos of Kevin Dougherty’s WITB in the forums.
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Equipment
Tour Edge shares photos of never-before-seen square driver from 2007

The year was 2007. The famous/infamous Nike Sasquatch Sumo2 was released the year prior, ditto the Callaway FT-i. It was a (brief) time when, if you were a driver, it was hip to be square.
Fast forward 16 years. Tour Edge revealed on social media this week that it had plans to add right angles to its Exotics line with an epic #TBT post, writing:
“For this #throwbackthursday we’re going to prove that sometimes a product just wasn’t destined to come out…
“That’s the case with this one-of-a-kind Exotics XSi square driver.
“The XSi stood for XTREME SUPER INERTIA, and we were following the design trend of the day back in good ol’ 2007…
“But [in] the end cooler heads prevailed and this one was left on the shelf.
“Literally, we just found it on a shelf in our “museum” and almost every single person who was here at the time had forgotten about it, or just plain never knew it existed.”
Check out photos of the Tour Edge Exotics XSi, below!
Photo credit: Tour Edge
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Whats in the Bag
Kevin Tway WITB 2023 (September)

- Kevin Tway what’s in the bag accurate as of the Fortinet Championship. More photos from the event here.
Driver: Titleist TSR3 (9 degrees, B2 SureFit setting)
Shaft: Fujikura Ventus Black 6 X
Driver: Titleist TSR3 (9 degrees, B2 SureFit setting)
Shaft: Fujikura Ventus Black 6 X
3-wood: Titleist Stealth 2 (15 degrees)
Shaft: Mitsubishi Diamana D+ 80 TX
5-wood: Titleist Stealth 2 (18 degrees)
Shaft: Mitsubishi Diamana D+ 90 TX
Irons: Titleist U505 (2), Titleist T100 (4-9)
Shafts: Fujikura Ventus HB 10 TX (2), True Temper Dynamic Gold Tour Issue X100 (4-9)
Wedges: Titleist Vokey Design SM9 (48-10F @47, 52-12F @51, 56-14F, 60-08M)
Shafts: True Temper Dynamic Gold Tour Issue X100 (48-56), True Temper Dynamic Gold Tour Issue S400 (60)
Putter: Scotty Cameron T-5 Proto, Scotty Cameron T7
Grip: Scotty Cameron Black Baby T
Grips: Golf Pride Tour Velvet Plus4
More photos of Kevin Tway’s WITB in the forums.
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TONEY P
Jul 24, 2017 at 11:54 am
Seen something similar years ago, but they probably feel better.
swingie
Jul 7, 2017 at 10:34 am
Cross between nike split cavities and ping EI1 in looks – gorgeous!
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.
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.
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.
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
SH
May 8, 2017 at 12:12 pm
Whatever happened to the diamond shaped muscle areas.
Peter
May 8, 2017 at 11:07 am
They look like the Snake Eyes 600C irons.
cgasucks
May 8, 2017 at 11:47 am
+1
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
Lol
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.