Equipment
GolfWRX Spotted: 2021 Mizuno ST-Z and ST-X drivers on USGA Conforming List
When it comes to drivers, Mizuno isn’t usually the company that comes to the top of mind for many golfers, but starting with the ST-190, and then the ST-200 series in 2020, they have quickly changed the perception of their metal woods thanks to wins on tour and more players choosing to put them in play—most recently Brandt Snedeker as a non-contracted player.
This morning, with the update of the USGA and R&A conforming equipment lists, we are getting a sneak peek at what Mizuno will have in store for 2021 with the release of the ST-Z and ST-X drivers.
What we know
Based on the information provided in the USGA submission by Mizuno, the ST-X will only be available in right-handed (10.5 and 12-degree lofts), while the ST-Z will be available in both right (9.5 and 10.5 degrees) and left-handed (9.5 degrees only).
ST-Z
Based on the images from the USGA list and our experience with the Mizuno product line, it appears that the ST-Z is the next step in the evolution of the standard ST200 with no adjustable CG but with a customizable weight in the back of the head.
We haven’t seen any images of a moveable weight driver in this new ST series, so it could be that the G-woods are getting phased out in favor of more internally biased weighting, but since those types of drivers often take a bit more time to get just right, it could be a matter of time before a “G” type driver hits the list.
As for technology, it has Mizuno’s standard wave to create flexibility behind the face, an adjustable hosel, and based on the images, more carbon fiber used around the head compared to previous generations, especially on the sole. I would also expect to hear a new face material or design story to complete the package and to boost MOI and ball speed.
ST-X
Based on the image from the USGA list and our experience, it appears that the ST-X is the next step in the evolution of the ST200-X driver, which is the lighter weight, more upright, and draw-biased driver from Mizuno. Don’t think draw bias always means it’s for higher handicaps either, because Mizuno staff player Chris Kirk got along very nicely with his out on the Korn Ferry and PGA Tours in 2020, including a win.
The tell-tale sign is the more heel biased weight in the back of the driver and what looks to be some sort of textured area to create “visible technology” towards the heel of the clubhead.
Beyond being draw-biased, when it comes to technology, it shares a lot of similarities to the ST-Z with Mizuno’s standing wave to create flexibility behind the face, an adjustable hosel, and more carbon fiber used around the head compared to previous generations, especially on the sole, and in the case of the ST-X, on the sole.
We don’t have any information on the release of these new drivers, but considering Mizuno didn’t adjust product release schedules in 2020, I would imagine it will be doing the same in 2021, and we can expect to hear more about these ST drivers either late 2020 or early into 2021.
To see what other golfers are saying about the newly spotted Mizuno ST-Z and ST-X drivers, check out the GolfWRX forums and join the discussion: GolfWRX – New Mizuno drivers spotted on USGA Conforming List
Cameron Young’s WITB from his win at the 2025 Wyndham Championship. Cameron is a Titleist staff player but his bag is definitely filled with some unique clubs. Here are the clubs he used to secure his first PGA Tour win!
Driver: Titleist GT2 (9 degrees, A1 SureFit setting)
Shaft: Mitsubishi Tensei 1K Pro Orange 70 TX
3-wood: Titleist GT3 (15 degrees)
Shaft: Mitsubishi Tensei 1K White 80 TX
Hybrid: Titleist GT2 (21 degrees)
Shaft: Fujikura Ventus HB Black VeloCore+ 10 X
Irons: Titleist T200 (4), Titleist T100 (5), Titleist 631.CY Prototype (6-9)
Shafts: True Temper Dynamic Gold X7 (4-9)
Wedges: Titleist Vokey Design SM10 (48-10F, 52-12F, 56-14F @57), WedgeWorks (60-K* @62)
Shafts: True Temper Dynamic Gold X7
Putter: Scotty Cameron Phantom 9.5 Tour Prototype
Grips: Golf Pride Tour Velvet Cord
Ball: Titleist Pro V1x Prototype
- Peter Malnati what’s in the bag accurate as of the Wyndham Championship. More photos from the event here.
Driver: Titleist GT3 (10 degrees, C2 SureFit setting)
Shaft: Project X Denali Blue 60 TX
3-wood: Titleist GT3 (15 degrees, A1 SureFit setting)
Shaft: Fujikura Ventus TR Blue 7 X
7-wood: Titleist GT2 (21 degrees, D1 SureFit setting)
Shaft: Fujikura Ventus TR Blue 8 X
Irons: Titleist T150 (4, 5), Titleist T100 (6-9)
Shafts: True Temper AMT Tour White X100
Wedges: Titleist Vokey Design SM10 (48-10F @47, 52-12F, 56-08M @57, 60-04T @62)
Shafts: True Temper Dynamic Gold Tour Issue S400
Putter: Scotty Cameron Studio Style Fastback 1.5 Tour Prototype
Grips: Golf Pride Tour Velvet
Ball: Titleist Pro V1x Yellow
We’re proud to once again partner with 2nd Swing Golf to bring you GolfWRX Members Choice 2025! 2nd Swing has more than 150,000 new and pre-swung golf clubs available in six store locations and online. Check them out here.
What is the best driver in 2025? At GolfWRX, we take great pride in our online community and the cumulative knowledge and experience of our members. When it comes to the best driver of 2025, we want to know what our forum faithful think.
Since our founding in 2005, the bedrock of GolfWRX.com has been the community of passionate and knowledgeable golfers in our forums, and we put endless trust in the opinions of our GolfWRX members — the most knowledgeable community of golfers on the internet. No other group of golfers in the world tests golf clubs as frequently or as extensively, nor is armed with such in-depth information about the latest technology.
Below are the results of GolfWRX member voting for the 2025 best driver, along with the vote percentage for each club.
Best driver of 2025: The top 5
5. Callaway Elyte Triple Diamond: 6.02%
Callaway’s pitch: “For golfers looking for a fast, forgiving, yet workable driver, the Elyte Triple Diamond features a tour-inspired shape and is the preferred model by most Callaway tour players.”
You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Callaway Elyte Triple Diamond here.
4. Ping G440 Max: 6.86%
Ping’s pitch: “The most forgiving G440 model, MAX has a hotter face to generate speed and distance, and a lighter overall system weight with a longer shaft (46″) for faster clubhead speed, higher launch and longer carries. The Free Hosel and Carbonfly Wrap crown save weight to create our lowest CG ever and increase forgiveness while contributing to a more muted, pleasing sound.”
You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Ping G440 Max here.
3. Ping G440 LST: 9.53%
Ping’s pitch: “LST is an especially good fit for faster swings, offering less spin and more control with a penetrating trajectory. A hotter face, lighter overall system weight and longer shaft (46″) deliver more speed and distance while maintaining tight dispersion.”
@phizzy30: “Not a fan of Ping drivers in general, but 440 LST takes the cake. It’s super forgiving across the face for a low spin head, looks and sounds good and the ability to make it play neutral or slightly fade biased through the hosel settings is very appealing.”
You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Ping G440 LST here.
2. Titleist GT3: 16.55%
Titleist’s pitch: “The GT3 Driver offers Titleist’s boldest combination of power and personalization through adjustable performance. Dial in the CG Track to your frequent contact location to make your biggest drives even bigger while taking total control over flight and shaping.”
@mrmikeac: “I’ve been Anti-Titleist for years and years and years (outside of Vokey, of course). With that being said, HOLY BEGEEZUS the GT3 driver is an absolute NUCLEAR MONSTER! This thing blew my G430 10K Max out of the water in every single category. Forgiveness is the biggest thing that stands out of me, the 3 model has always been one of the less forgiving models in the past but this GT3 can take bad shot after bad shot and still end up in the fairway, I think a ton of that has to do with the adjustability, it’s actually effective. Feel and sound is perfect, that solid crack is so addicting to hear and when you hit it out the screws this thing can absolutely bomb it. Titleist, I’m sorry for doubting you. You have converted me.”
You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Titleist GT3 here.
1. Titleist GT2: 22.91%
Titleist’s pitch: “Delivering impressive distance from any impact point, the Titleist GT2 Driver extracts maximum performance through a forgiving design. Get the stability and added confidence of a high-MOI driver without sacrificing speed.”
@DTorres: “The Titleist GT2 has proven to be the best driver of the year. Packaged in a classic profile, GT2 perfectly balances performance and forgiveness while consistently being a high performer across all categories.”
You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Titleist GT2 here.
Other drivers receiving >2% of the vote
| Driver | Vote percentage (%) |
|---|---|
| Cobra DS Adapt Max K | 4.85% |
| Ping G430 Max 10K | 3.85% |
| Callaway Elyte Triple Diamond | 3.68% |
| TaylorMade Qi35 | 3.51% |
| Callaway Elyte | 3.18% |
| Cobra DS Adapt X | 2.34% |
| Cobra DS Adapt LS | 2.17% |
| TaylorMade Qi35 LS | 2.17% |
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