Connect with us


Spotted: Callaway GBB Epic Sub Zero “PM440” hits USGA conforming list



Callaway’s GBB Epic Sub Zero driver — the more forgiving, yet deeper-faced option in the GBB Epic driver series — has made waves on professional golf Tours, and it also garnered the most votes in GolfWRX’s Members Choice: The Best Driver of 2017. The retail models measure 460cc, but there’s another 440cc version floating around on Tour in the bag of Alex Noren.

Now, there’s yet another GBB Epic Sub Zero model in existence; a “GBB Epic Sub Zero PM440” is listed on the USGA Conforming Clubs list.20160753

Screen Shot 2017-06-02 at 11.46.02 AM

What could a left-handed Callaway driver named “PM” possibly mean? We’ll go out on a limb and guess that Callaway has made a GBB Epic Sub Zero 440 driver especially for Phil Mickelson, but we will update this story when Callaway representatives provide further insight on the “PM440.”

Update: “It’s a left-handed 440cc version of Phil’s driver,” said a Callaway representative. “It’s a one-off Tour prototype that they built of his driver for him, instead of the standard 460cc head.”

Discussion: See what GolfWRX members are saying about the GBB Epic Sub Zero drivers in our forums

Your Reaction?
  • 80
  • LEGIT12
  • WOW6
  • LOL4
  • IDHT3
  • FLOP1
  • OB2
  • SHANK24

We share your golf passion. You can follow GolfWRX on Twitter @GolfWRX, Facebook and Instagram.



  1. Barry

    Jun 10, 2017 at 5:28 pm

    I wish they would come to market with that same black/ silver or black/grey color scheme versus the green/ black scheme.

  2. Dave R

    Jun 6, 2017 at 4:22 pm

    Really . A new driver!

  3. @@!!!

    Jun 3, 2017 at 10:35 pm

    Personally I lprefer a smaller head like a SLDR/M1 430/440, 917 D3.

    But I really wish a there was a pic from the address point of view, because that’s really a huge factor of importance I think.

  4. @@!!!

    Jun 3, 2017 at 10:16 pm


  5. Sam

    Jun 2, 2017 at 5:16 pm

    Maybe he’ll be able to hit 10 fairways at the US Open with this thing

  6. Scraping the barrel

    Jun 2, 2017 at 4:21 pm

    Epic fail more like.

    • rebfan73

      Jun 3, 2017 at 8:52 am


    • Mike

      Jun 7, 2017 at 8:07 am

      I like the EPIC Sub-Zero much better than the Taylormade M1 which I thought was a pretty good driver. So for me and many others it is more epic than fail….

Leave a Reply

Your email address will not be published. Required fields are marked *

pga tour

Aaron Wise’s Winning WITB: 2018 AT&T Byron Nelson



Driver: Callaway Rogue (10.5 degrees)
Shaft: Fujikura Pro Tour Spec 75

3 Wood: Callaway Rogue (15 degrees)
Shaft: Fujikura Atmos Black 8X

Driving Iron: Callaway X-Forged Utility (2-iron)
Shaft: KBS Tour Prototype Hybrid

Irons: Callaway Apex 16 (4-iron),  Callaway Apex MB 18 (5-PW)
Shafts: True Temper Dynamic Gold X100 Tour Issue

Wedges: Titleist Vokey SM7 (50, 56, 60)
Shafts: True Temper Dynamic Gold X100 Tour Issue

Putter: Odyssey O-Works Red V-Line Fang CH

Golf Ball: Callaway Chrome Soft X

Grips: Golf Pride Tour Velvet 58R

Your Reaction?
  • 43
  • LEGIT3
  • WOW1
  • LOL1
  • IDHT1
  • FLOP1
  • OB0
  • SHANK5

Continue Reading

pga tour

Andres Romero WITB 2018



Equipment is accurate as of the 2018 Zurich Classic (4/23/2018).

Driver: Callaway Rogue (9.0 degrees)
Shaft: Project X HZRDUS 6.5 63

3 Wood: Callaway Rogue (15 degrees)
Shaft: Mitsubishi Tensei Blue CK 70TX

Driving Iron: Callaway X Forged UT (18 degrees), Callaway Epic (3)
Shaft: Project X 6.5, Nippon N.S. Pro Modus 3 Tour 120X (3)

Irons: Callaway X Forged (4-PW)
Shaft: Project X 6.5

Wedges: Callaway Mack Daddy 4 (54-10S, 60-08C)
Shaft: True Temper Dynamic Gold Tour Issue S400

Putter: Odyssey Toulon San Diego
Shaft: Super Stroke Ultra Slim 1.0

Putter: Odyssey O-Works 9
Grip: Super Stroke Ultra Slim 1.0

WITB Notes: Romero is currently testing two different putters, and we will update this post when he’s made a decision between them.


Discussion: See what GolfWRX members are saying about Romero’s clubs. 

Your Reaction?
  • 3
  • LEGIT0
  • WOW0
  • LOL1
  • IDHT0
  • FLOP0
  • OB0
  • SHANK0

Continue Reading


PXG introduces high-MOI, adjustable Operator putter



Joining the Drone and Gunboat on the high-MOI mallet-style putter end of the spectrum, PXG is launching its highest MOI putter to date: the Operator.

With a maximum head mass of 400 grams, depending on weight adjustments, the Operator features a soft billet-milled 304 stainless steel face and a body made from 6061 aircraft-grade aluminum.

PXG made the Operator for those seeking advanced customization and maximum forgiveness. Multiple sole weights, available in increments of 2.5g, 5g, 10g, 15g and 20g, can be used to adjust the overall head mass.

Regarding the name: “Operator” is the specific term for Delta’s operational personnel, although in recent years it has become a term for almost all U.S. military special forces.

The putter is available in three models.


The double-bend hosel style creates a full shaft of offset with a face-balanced hang angle. Built for players with a straight-back-straight-through stroke.

Operator H

The hosel neck is heel-shafted with a half shaft of offset and mid toe-down hang angle. Built for players with more face rotation in their stroke.

Operator P

The plumber’s neck shaft creates a full shaft of offset with a slightly toe-down hang angle. Built for players with a moderate amount of face rotation in their stroke.

All Operator models feature PXG’s proprietary TPE honeycomb sole insert and a TPE insert behind the face to dampen vibrations and enhance feel.

$450 retail.

Your Reaction?
  • 27
  • LEGIT2
  • WOW0
  • LOL7
  • IDHT2
  • FLOP4
  • OB4
  • SHANK60

Continue Reading

19th Hole