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The Wedge Guy: St. Andrews — Where my wedge work began

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Having the Open Championship at St. Andrews this week is special to me, and a story I read yesterday about Justin Thomas and his wedges is the reason why.

It seems “Bones” McKay has suggested to Justin Thomas that he carry two lob wedges this week, one with low bounce for the tight fairway lies, and one with a higher bounce for his bunker shots. Yes, the turf at St. Andrews is that challenging. I experienced the same challenge when my late brother and I made a trip to Scotland in 1990 – over 30 years ago.

But it’s not just at St. Andrews, but on nearly every course everywhere. You can face all kinds of lies and execute all kinds of swings every round you play, right? But it was there in Scotland that I found my off-the-shelf sand wedge was just not getting it done from those tight fairways. So, on a tour of Auchterlonie’s Golf Shop, I saw a grinding wheel and had an inspiration. They agreed to let me use the grinder.

I went back to the hotel and retrieved my sand wedge, and began work on the sole design I subsequently patented…

First, I ground much of the bounce off the back of the sole, taking it down to what I later learned was only about 5-6 degrees. Then, I ground a very aggressive high bounce on the front quarter-inch or so of the sole, removing metal all the way up to the first groove as I remember. Of course, that made the leading edge and offset look very strange, so I ground off some of the bottom of the hosel to make it look at least presentable.

As you can imagine, removing that much metal made the swingweight drop like a rock, so my solution was to pack lead tape on the back of the clubhead until I had it back up to about its original D4-5 swingweight.

The result of my very first work on wedges was very impressive. The new “dual bounce sole” I had created proved very adept at the tight lies around the greens, but also totally functional from the bunkers. And the added lead tape higher in the clubhead produced noticeably more penetrating trajectories and spin like you wouldn’t believe.

Upon return to the States, I purchased several major brand wedges and took a more sophisticated approach to fine-tuning this concept, welding material to the sole and then grinding and polishing until I had it right. Once I had it where I wanted, I filed my patent application, and in 1994 was awarded “U.S. Patent #5,301,944 – Golf Club Head With Improved Sole”.

For the past thirty years, I’ve been constantly tweaking on that sole design, improving the concept ever so slightly with each iteration through wedges I’ve designed for Merit Golf, Reid Lockhart, EIDOLON, SCOR, Ben Hogan, and now Edison Golf. And with each of those wedges, I’ve also increased mass in the top half of the clubhead to optimize gear effect. And that has been proven to make wedges more forgiving, deliver improved spin and more penetrating trajectories — and to make them deadly accurate with distance control, even on your slight misses.

While today’s post is not intended as any kind of promotion for my work in wedge design, the memories of that trip with my late brother — and of my inspiration to move on from putter design to tackle the wedge category — have all come flooding back with The 150th Open Championship being played at St. Andrews and the interesting story of a tour player, his caddie, and his wedges.

I hope you all can get plenty of time in front of the TV this weekend to witness how and where this wonderful game has been played for hundreds of years. And I hope all of you will find a way to make this pilgrimage to the birthplace of golf.

It just might change your life — it certainly did change mine.

Terry Koehler is a fourth generation Texan and a graduate of Texas A&M University. Over his 40-year career in the golf industry, he has created over 100 putter designs and dozens of wedges. In 2014, he put together the team that reintroduced the Ben Hogan brand to the golf equipment industry with his TK 15 wedges and Ft. Worth 15 iron designs. Since receiving a U.S. Patent for his “Koehler Sole” in the early 1990s, he has been challenging “conventional wisdom” in the wedge category. In addition to inspiring multiple companies to emulate this sole technology, the performance of his wedge designs have stimulated all other companies to reposition some mass toward the top of the blade in their wedges. Terry is retired from his role as Chairman and Director of Innovation for Edison Golf, and remains active in the industry as an independent designer and consultant.  But his most compelling work is in the wedge category. Since he first patented his “Koehler Sole” in the early 1990s, he has been challenging “conventional wisdom” reflected in ‘tour design’ wedges. The performance of his wedge designs have stimulated other companies to move slightly more mass toward the top of the blade in their wedges, but none approach the dramatic design of his Edison Forged wedges, which have been robotically proven to significantly raise the bar for wedge performance. Terry serves as Chairman and Director of Innovation for Edison Golf – check it out at www.EdisonWedges.com.

1 Comment

1 Comment

  1. geohogan

    Aug 5, 2022 at 7:52 pm

    “Of course, that made the leading edge and offset look very strange, so I ground off some of the bottom of the hosel to make it look at least presentable.”

    I can relate.
    Cant stand offset. After bending all my irons to zero offset, there was so much bounce to grind away and so much lead tape to add.

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Tour Photo Galleries

Photos from the 2026 Memorial Tournament

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GolfWRX is on site this week at the Memorial Tournament, with both Alistair Cameron and Tour Photographer Greg Moore on the ground in Dublin, Ohio, where a strong field is assembled to pay homage to the Golden Bear.

In addition to WITB galleries, we’ve already been treated to an in-hand look at Tommy Fleetwood’s new TaylorMade Spider putters.

Check out links to all our photos below.

General Albums

WITB Albums

Pullout Albums

 

 

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Tour Tech Rundown: Heroic Henley

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Around the world, the golf wheel spun this final week in May of 2026. From New Jersey to Austria, with stops in Korea, Texas, and North Carolina (don’t let me route your next trip) the world’s finest put their golf games on display. There were three playoffs, some known commodities and some new talent. It was the sort of week that we hope to have at this point in the seasons. June and July afford double-digit major events, and perhaps, one of this week’s champions will use this success as a springboard to new heights. Time to run it all down, tech style, in this week’s Tour Tech Rundown.

Thanks to WITBHub, Today’s Golfer, GolfWRX, and Inside Tour Golf for initial research into equipment.

PGA Tour @ Charles Schwab Challenge: Heroic Henley denies Cole

Eric Cole did nearly everything that a fellow can do, to secure a first PGA Tour title. He stayed one shot clear of Ryder Cup player Ben Griffin. He kept US Open champion Gary Woodland and wunderkind Michael Brennan two shots distant. He posted 70 on day four to reach twelve under par. And then, Russell Henley revealed his Dr. Strange cloak. Henley made 47 feet of birdie putts on holes 16, 17, and 18, to jump from minus-nine to twelve-deep, and secured a spot in a playoff with Cole. The duo returned to the final tee, and put on a stripe show.

Both golfers found the fairway off the tee, and Henley improved on his regulation play with an approach to four feet. Cole did himself proud, tucking an iron to a dozen feet, but he was unable to convert the putt for three. Henley is one of the best putters on tour, and he proved it once more by draining a putt for a fourth consecutive birdie, and a sixth PGA Tour title. For Eric Cole, that first victory should come, and soon. He has done everything necessary to earn the chalice lift.

Henley’s Suitcase

  • Driver: Titleist TSi3 at 10 degrees. Shaft: Project X HZRDUS Smoke Black 70g 6.5 TX
  • Metal: Titleist TS3 at 16.5 degrees. Shaft: Project X HZRDUS Smoke Black 80 TX
  • Hybrid: Titleist TSi2 at 21 degrees. Shaft: Mitsubishi MMT hybrid 100 TX
  • Iron: Titleist T250 4-iron. Shaft: True Temper Dynamic Golf AMT Tour White X100
  • Irons: Titleist T100 5-6 irons. Shaft: True Temper Dynamic Golf AMT Tour White X100
  • Irons: Titleist T100 7-9 irons. Shaft: True Temper Dynamic Gold Tour Issue X100
  • Wedges: Titleist Vokey Design SM11 at 48 and 50 degrees. Shaft: True Temper Dynamic Golf Tour Issue X100
  • Wedges: Titleist Vokey Design SM11 at 54 and 60 degrees. Shaft: rue Temper Dynamic Golf Tour Issue S400
  • Putter: Titleist Scotty Cameron T5 Tour Prototype

LPGA @ Shoprite LPGA: Welcome back, Celine!

Soo Bin Joo had her eyes on a maiden LPGA title. She held the lead after two rounds, then hit a red light at the intersection of can-I and how-To. Joo posted plus-two on day three in New Jersey, and dropped to a T4 finish, which was still a career-best for the young Korean golfer. Instead of a new face, a familiar face returned to the top of the podium.

Celine Boutier was the It Girl in 2023. She collected four victories, including a major title at Evian. Boutier reached world number one status, then simply faded into the background. No wins came her way over the next 30 months. On Sunday, she collected LPGA victory number seven, at the same trace as LPGA victory number two.

Day three saw Boutier manage the windswept Seaview Bay course with six birdies and a bogey. She was challenged in the end by Thailand’s Arpichaya Yubol, who signed for a 66 of her own. Yubol came up one shot shy of the top ladder rung. Finishing in third place at -7, two back of the winner, was Ireland’s Lauren Walsh.

Celine’s Suitcase

  • Driver: PXG 0311 Black Ops Tour-1 at 9 degrees. Shaft: Graphite Design AD IZ-5
  • Hybrid: PXG 0311 Black Ops at 19 and 22 degrees. Shaft: KBS Hybrid Prototype
  • Hybrid: PXG 0311 Gen5.
  • Iron: PXG 0311 P Gen 4 5-9 irons
  • Wedge: PXG 0311 T Gen 4 PW
  • Wedges: PXG 0311 Sugar Daddy II at 50, 54, 58 degrees
  • Putter: Bettinardi Studio Stock 3 DASS

DP World Tour @ Austrian Alpine: KK? KK!

Kota Kaneko has a rhythmic name. It has strong vowels and a run of voiceless stops in its crunchy K sounds. On Sunday in Austria, Kaneko put a stop to a challenge from Portugal’s Ricardo Gouveia and everyone else, and claimed a first-ever title on the DP World Tour. Gouveia did well to reach 16-under par over four days, but Kaneko held firm, two shots in the clear.

Davis Bryant of the USA also forged a strong challenge for the win. He ended in a tie with Gouveia for second place. Kaneko began and finished his final round in a bit of a malaise, but he caught fire midway through. Birdies at 10, 12, and 13 provided the necessary cushion to cruise to the finish line without breaking a serious sweat.

Kaneko’s Suitcase

  • Driver: Ping Max G440
  • Metals: TaylorMade Qi4D at 15, 16.5, 21, and 24 degrees
  • Irons: TaylorMade P760 5 and 6 irons
  • Irons: TaylorMade P7TW 7-9 irons
  • Wedges: Titleist Vokey Design at 46, 52, 56, and 60 degrees
  • Putter: Odyssey Ai-One Cruiser Arm Lock #7

Korn Ferry Tour @ UNC Health Championship: Improbably Alvaro

Alvaro Ortiz may have had a bit of scare on the outward nine on Sunday, but he came through in clutch fashion in the end. Ortiz began the day bogey-double, and added another double bogey at the 11th hole. He was mired in a downward trend, spiraling away from the top of the leader’s board. Ortiz found hope at the 14th, where his first birdie of the day tumbled home. Inspired, he closed with birdies and 17 and 18 to catch Ross Steelman at 10-under par, and the duo returned to the 18th deck for overtime.

The extra session concluded in brief time. Ortiz, buoyed by his newly-retrieved confidence, hit the fairway with driver, then approached to six feet and drained the putt. Gobsmacked, Steelman could do little more than smile and applaud, as his run at the top came to a close. The victory was the first for Ortiz on the KFT, and will implant him squarely in the chase for a PGA Tour promotion.

Alvaro’s Suitcase

  • Driver: Ping G430 MAX driver at 9 degrees loft
  • Metal: Ping G430 MAX 3W
  • Iron: Ping iDi Driving Iron
  • Irons: Ping Blueprint S irons
  • Wedges
  • Putter: Scottsdale TR Piper C

LIV @ Korea: Me llamo Joaquin

Chile’s Joaquin Niemann had been away from the LIV winner’s circle throughout all of 2026. This week in Korea, he reminded us that he is still a force to consider. Niemann chased down Taylor Gooch over the closing holes at Asiad Country Club, then claimed victory with a hole-one birdie in extra time. Bryson DeChambeau claimed solo third, one shot in arrears at minus-eleven. Dustin Johnson finished on fourth, one putt farther back.

Niemann’s Suitcase

  • Driver: Ping 440 LST
  • Metal: Ping G440 Max at 15 degrees
  • Metal: Ping G425 Max at 21 degrees
  • Hybrid: Ping G430 at 25 degrees
  • Irons: Ping Blueprint S 5 through PW
  • Wedges: Ping S159 at 52, 56, and 60 degrees
  • Putter: Ping PLD Anser

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Russell Henley’s winning WITB: 2026 Charles Schwab Challenge

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Driver: Titleist TSi3 (10 degrees)
Shaft: Project X HZRDUS Smoke Black 70 6.5 TX

3-wood: Titleist TS3 (16.5 degrees)
Shaft: Project X HZRDUS Smoke Black 80 TX

7-wood: Titleist GTS3 (21 degrees)
Shaft: Project X Denali Black 80 TX

Irons: Titleist T250 (4), Titleist T100 (5-9)
Shafts: True Temper Dynamic Gold AMT (4-6), True Temper Dynamic Gold Tour Issue S400 (7-9)

Wedges: Titleist Vokey Design SM11 (48-10F @47, 50-08F @51, 54-10S @55, 60-04T)
Shafts: True Temper Dynamic Gold Tour Issue X100 (48), S400 (47)

Putter: Scotty Cameron Phantom X5 Tour Prototype

Grips: Golf Pride Tour Velvet

Ball: Titleist Pro V1x

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