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Three Callaway GBB Epic drivers appear on USGA Conforming Club List

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Three new Callaway drivers have appeared on the USGA’s Conforming Club List: the GBB Epic, the GBB Epic Star and the GBB Epic Sub Zero.

Callaway isn’t commenting on the new Great Big Bertha (GBB) drivers at this time, so we can’t officially confirm or deny any details about the new drivers. We do anticipate that one or more of the driver models could be in play this week at the Hero World Challenge in the Bahamas, however, where they will be permitted for us. We also can point out a few things based on the USGA’s black-and-white photos.

GBB Epic

Callaway_GBB-Epic

GBB Epic Star

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Based on the photos, it appears the GBB Epic and GBB Epic Star are virtually identical, with the exception being the lack of an adjustable hosel on the GBB Epic Star.

Both drivers appear to use a technology called “Jailbreak,” which is highlighted on the front of the driver’s sole. The technology is rumored to connect the sole and crown of the drivers, adding reinforcement that improves energy transfer.

On the other end of the sole is a sliding weight that enables golfers to select a draw, fade or neutral trajectory bias. There are also what seem to be carbon fiber inserts on the soles of all three driver models. Carbon fiber is lighter than titanium, and its use presumably enhanced the ability of Callaway engineers to optimize the weighting of the driver heads for improved performance.

GBB Epic Sub Zero

Callaway_GBB_Epic_Sub_Zero

Instead of a sliding weight track, the GBB Epic Sub Zero has two adjustable weights — one on the front of the sole, and one on the back. That reminds us of Callaway’s XR ’16 Sub Zero driver, which is the company’s current ultra-low-spin driver. It design targets better golfers, and was used in 2016 by Phil Mickelson.

The Sub Zero got its name from its center of gravity position (CG), which Callaway says is below the neutral axis line, or “sub zero.” The XR ’16 Sub Zero uses a what Callaway called a Carbon Triax Crown, an extremely thin, lightweight composite material on the top of the driver that the company said enabled its sub zero CG location.

What are GolfWRX Members saying about the new drivers? Join the discussion in our forum. 

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18 Comments

18 Comments

  1. westphi

    Dec 4, 2016 at 12:56 pm

    When is this going to be released in stores?

  2. Red Regal

    Nov 29, 2016 at 6:42 am

    Callaway the new Taylor Made with so many releases.

  3. PapaBear

    Nov 29, 2016 at 2:46 am

    Haven’t been this excited since the Cobra 370U was released!

  4. KJ

    Nov 28, 2016 at 9:02 pm

    A lot of the comments, so true. I buy a new driver amount every 3 years. I typically buy a model that’s one year old and half the price of the original in very good shape.

  5. erlybrd

    Nov 28, 2016 at 6:27 pm

    What? Looks just like 915 D4 head!!

  6. Blade Junkie

    Nov 28, 2016 at 3:31 pm

    Another bottle of Snake Oil please Bartender !

  7. B. Parsons

    Nov 28, 2016 at 1:16 pm

    The Korean YouTube video showed these in detail. I’m sure cally will try their best to have it pulled, but it’s still out there. Search for it on naver or another Korean search engine.

  8. Dave R

    Nov 28, 2016 at 12:21 pm

    What I can’t believe it more new drivers, what will they think of next

  9. Jordan

    Nov 28, 2016 at 11:14 am

    Wait, they’re coming out with an adjustable 915 driver? Color me intrigued…

  10. Clay

    Nov 28, 2016 at 10:30 am

    I can’t believe no one has speculated that the bonded hosel design was made for Tiger. Are the “Tiger is buying TM” rumors so strong that no one wants to start a new rumor about Tiger signing with Callaway? Fine, I will start the rumor. The GBB Star is made specifically for Tiger and will not go to market. I have zero evidence but I know some people that know some people that robbed some people and they said it is true.

  11. Michael

    Nov 28, 2016 at 9:33 am

    The Epic Star has my attention. Will this be a non-adjustable model that is in the $399 range? Would they want to compete with possible Fusion sales?

  12. cgasucks

    Nov 28, 2016 at 9:04 am

    Jailbreak technology!??! What is that?? Does it mean if you pay someone to “unlock” it you remove the USGA COR restriction!??!

    • Desmond

      Nov 28, 2016 at 9:23 am

      You need to read the EPIC thread

      • Desmond

        Nov 28, 2016 at 9:24 am

        … or just the descriptions above. Works wonders.

  13. Fozzie Bear

    Nov 28, 2016 at 8:50 am

    Oh, Mizuno Fast Track is back. 🙂

    • DB

      Dec 2, 2016 at 12:49 am

      Man, I just saw a Mizzy Fast Track at GolfMart for like $30.
      If Callaway says this technology is a game changer then I’m going back to get that Mizuno tonight!

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Equipment

A shocking Backstryke putter appearance + 7 interesting gear photos from the Zurich Classic

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Welcome to New Orleans, where TPC Louisiana plays host to the 2024 Zurich Classic. In between breakfast beignets and nightly Creole feasts, PGA Tour players are also competing in the unique two-man format at the Zurich this week.

Although the vibes in Nawlins are a bit lighter-fare than the recent back-to-back competitions the Masters and the RBC Heritage signature event), the gear news was no less serious this week.

We spotted some recent changes from Rory McIlroy, a very rare Odyssey Backstryke putter, dove into the bag of legendary New Orleans Saints quarterback Drew Brees, and spotted Patrick Cantlay continuing to test new equipment.

Get your beads out and crack your crawfish, because it’s time for an equipment rundown from The Big Easy (meaning New Orleans, of course, not Ernie Els).

See all of our photos from the Zurich Classic here

Rory’s on-and-off lob wedge

Since the end of 2023, Rory McIlroy has had an on-again, off-again relationship with a Titleist Vokey K-Grind lob wedge. In his last start, it was on, and the wedge is back in the bag again this week. We got a great look at the complicated grind that McIlroy uses.

 

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A full look into McIlroy’s bag above also shows that he switched out of the TaylorMade BRNR Mini Copper that he used at the RBC Heritage, and he’s back into the Qi10 core 3-wood. As we discussed last week, McIlroy will likely keep the BRNR around as a course-specific club, trading it in and out for the 3-wood.

See Rory McIlroy’s full 2024 WITB from the Zurich here

Turning Back the clock

Unless Tommy Gainey is in the field, it’s unlikely you’ll ever see Odyssey’s Backstryke technology make an appearance on the PGA Tour.

But then, when you least expect it, Russ Cochran shows up.

For more than a decade – since the 2013 Sony Open in Hawai’i – Cochran has been stuck on 599 PGA Tour starts. This week will be his 600th.

Cochran is in the field at the Zurich this week playing alongside Eric Cole, whose regular caddie is Reed Cochran, Russ’s son.

The Backstryke putter was first released back in 2010, and its unique design helps shift the axis point of the putter closer to the CG of the head. And, the putter is getting a nod this week at the Zurich Classic, thanks to Cochran’s 600th career PGA Tour start.

The putter is certainly awesome, but don’t forget to check out Cochran’s full WITB from this week.

Drew Brees with a Super Bowl winning Scotty Cameron putter

Drew Brees, a legendary retired quarterback for the hometown New Orleans Saints, made an appearance at the Zurich’s Wednesday Pro-Am, playing alongside Zach Johnson, Ryan Palmer, and current Saints QB Derek Carr.

Brees’ bag included a TaylorMade Stealth2 Plus driver, a BRNR Mini 13.5-degree, a Stealth 5-wood, a mixed set of P-790 and P-760 irons, Milled Grind Hi-Toe wedges, and a custom Scotty Cameron “New Orleans Saints” putter, which Scotty made for Brees following his Super Bowl MVP-winning performance in 2010.

 

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It should also be noted that Brees has his Venmo QR code as a bag tag.

If you’re gambling with Brees on the course, just know that not having cash won’t work as an excuse.

Brilliant.

See Drew Brees’ full WITB from the Zurich here

Stricker’s unrecognizable putter

Steve Stricker has made numerous upgrades to his bag recently, including a new TSR3 driver and T100 irons, but his longtime Odyssey White Hot No. 2 putter is still going strong. It’s the most recognizable unrecognizable putter ever.

Here’s a better look at Stricker’s flatstick, which he started using back in 2007.

 

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Patrick Cantlay has opened the equipment-switching floodgates

Over on the PGA Tour’s Equipment Report this week, we covered Cantlay’s recent switch into Ping Blueprint S irons, and a Titleist TSR2 driver.

Cantlay hadn’t switched irons for about seven years, so the iron switch he made at The 2024 Masters came as a shock to the norm. He simply isn’t one to change gear very often, so anytime Cantlay makes a switch, it’s news.

It seems the floodgates of equipment testing have opened up a bit for Cantlay, who was also spotted testing a custom Scotty Cameron blade putter on Tuesday this week. By Wednesday, Cantlay was back practicing with his familiar Scotty Cameron T5 Proto mallet, but it’s certainly something to keep an eye on going forward.

Daniel Berger’s custom Jailbird site lines

Berger, who’s currently using Odyssey’s Ai-One Mini Jailbird mallet putter, has a unique 3-dot, 2-line alignment on the crown of his navy-white-navy-white mallet putter. Looking down at the putter, it’s easy to see why this alignment system would help; it just seems impossible to set up to the ball off-center, or misaligned to the target.

Also, for anyone worried, you can rest easy. Yes, he’s still playing the 2013 TaylorMade TP MC irons, which we highlighted in our recent “Modern Classics: Old vs. New” video testing series.

FitzMagic teams back up

Brothers Matthew and Alex Fitzpatrick are teaming up once again at the Zurich this year, and Bettinardi Golf hooked them up with some festive “FitzMagic” headcovers to match this week.

See what else is in Alex Fitzpatrick’s WITB here

And, with that, we say goodbye to the Zurich Classic in New Orleans. Don’t forget to check out all of our photos from this week, including 30 unique photo galleries full of equipment photos.

We’ll see you next week in Texas for the 2024 CJ Cup Byron Nelson!

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Whats in the Bag

Alejandro Tosti WITB 2024 (April)

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  • Alejandro Tosti what’s in the bag accurate as of the Zurich Classic.

Driver: Srixon ZX5 Mk II LS (9.5 degrees @10.5)
Shaft: Project X HZRDUS T1100 75 6.5

3-wood: TaylorMade Qi10 Tour
Shaft: Project X HZRDUS Black 80 TX

Hybrid: TaylorMade Qi10 Tour Rescue (22 degrees)
Shaft: Project X HZRDUS Smoke Black RDX 6.5 100

Irons: Srixon ZX7 Mk II (4-PW)
Shafts: True Temper Dynamic Gold Mid Tour Issue X100

Wedges: Cleveland RTX6 ZipCore Tour Rack (50-10 MID, 54-10 MID, 58-10 MID, 60-06 LOW)
Shafts: True Temper Dynamic Gold Mid Tour Issue X100, S400

Putter: Scotty Cameron

Grips: Golf Pride MCC Plus4

Check out more in-hand photos of Alejandro Tosti’s WITB in the forums.

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Whats in the Bag

Drew Brees WITB 2024 (April)

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Driver: TaylorMade Stealth 2 Plus (10.5 degrees)

Mini driver: TaylorMade BRNR Mini Copper (13.5 degrees)

5-wood: TaylorMade Stealth Plus (19 degrees)

Irons: TaylorMade P790 (4-8, PW), TaylorMade P760 (9)

Wedges: TaylorMade MG Hi-Toe (52-09, 56-10, 60)

Putter: Scotty Cameron Select Newport 2 Prototype

Check out more in-hand photos of Drew Brees’ clubs here.

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