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19th Hole

Why JoAnne Carner’s 30-year-old wedge was deemed non-conforming at the U.S. Senior Women’s Open

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Per Beth Ann Nichols’ of Golfweek, seven of the 20 clubs USGA officials tested on site at the U.S. Senior Women’s Open were deemed to be nonconforming.

“It’s not often that the USGA places someone from its conforming department at registration, but with so many players in the field who are competing in a USGA event for the first time in a long time, it seemed like a good idea,” she wrote.

Indeed. And while we don’t have any information on six of the violations, Nichols related the story of (the legendary) JoAnne Carner, who was told the 55-degree Wilson R-90 wedge she’s had in the bag for nearly 30 years didn’t conform.

This seemed odd. Certainly a three-decade old club wouldn’t feature any of the aggressive, early 2000s grooves that led to the enactment of the groove rule. It’s unclear what year Carner’s wedge was from, but R-90 production (of the style hers is presumed to be) ended in 1992.

When reached for comment Julia Pine, Manager, Championship Communications, told us: “We introduced a new groove condition of competition in 2010 for Open championships. We offer assistance and testing prior to and on site at our championships, and when tested her club was deemed not to comply.”

Asked for more information, Pine indicated the organization didn’t have additional details  on the specific problem with Carner’s grooves.

A quick groove rule refresher.

Rules of Golf, Appendix II: 5c(i)

  • Grooves must be straight and parallel.
  • Grooves must have a symmetrical cross-section and have sides which do not converge (see Fig. XI).
  • *For clubs that have a loft angle greater than or equal to 25 degrees, grooves must have a plain cross-section.
  • The width, spacing and cross-section of the grooves must be consistent throughout the impact area (some exceptions may be made for woods).
  • The width (W) of each groove must not exceed 0.035 inches (0.9 mm), using the 30 degree method of measurement on file with the USGA.
  • The distance between edges of adjacent grooves (S) must not be less than three times the width of the grooves, and not less than 0.075 inches (1.905 mm).
  • The depth of each groove must not exceed 0.020 inches (0.508 mm).
  • *For clubs other than driving clubs, the cross-sectional area (A) of a groove divided by the groove pitch (W+S) must not exceed 0.0030 square inches per inch (0.0762 mm2/mm) (see Fig. XII).
  • Grooves must not have sharp edges or raised lips.
  • For clubs that have a loft angle greater than or equal to 25 degrees, groove edges must be substantially in the form of a round having an effective radius which is not less than 0.010 inches (0.254 mm) when measured as shown in Fig. XIII, and not greater than 0.020 inches (0.508 mm). Deviations in effective radius within 0.001 inches (0.0254 mm) are permissible.

What do you think the issue could be? Grooves worn too deep after 30 years of use? A sweet-spot sized indentation? Surely the R-90 isn’t a non-conforming club, right?

GolfWRX members: What do you think?

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19th Hole

Vincenzi’s 2024 PGA Championship betting preview: Rising star ready to join the immortals at Valhalla

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The second major of the 2024 season is upon us as the world’s best players will tee it up this week at Valhalla Golf Club in Louisville, Kentucky to compete for the Wanamaker Trophy.

The last time we saw Valhalla host a major championship, Rory McIlroy fended off Phil Mickelson, Henrik Stenson, Rickie Fowler and the creeping darkness that was descending upon the golf course. The Northern Irishman had the golf world in the palm of his hand, joining only Tiger Woods and Jack Nicklaus as players who’d won four major championships by the time they were 25 years old. 

Valhalla is named after the great hall described in Norse mythology where the souls of Vikings feasted and celebrated with the Gods. The course is a Jack Nicklaus-design that has ranked among Golf Digest’s “America’s 100 Greatest Courses” for three decades. 

Valhalla Golf Club is a par-71 measuring 7,542 yards with Zoysia fairways and Bentgrass greens. The course has rolling hills and dangerous streams scattered throughout and the signature 13th hole is picturesque with limestone and unique bunkering protecting the green. The 2024 PGA Championship will mark the fourth time Valhalla has hosted the event. 

The field this week will consist of 156 players, including 16 PGA Champions and 33 Major Champions. All of the top players will be here gunning for the glory of a major championship with the exception of 

Past Winners of the PGA Championship

  • 2023: Brooks Koepka (-9) Oak Hill
  • 2022: Justin Thomas (-5) Southern Hills
  • 2021: Phil Mickelson (-6) Kiawah Island
  • 2020: Collin Morikawa (-13) TPC Harding Park
  • 2019: Brooks Koepka (-8) Bethpage Black
  • 2018: Brooks Koepka (-16) Bellerive
  • 2017: Justin Thomas (-8) Quail Hollow
  • 2016: Jimmy Walker (-14) Baltusrol
  • 2015: Jason Day (-20) Whistling Straits
  • 2014: Rory McIlroy (-16) Valhalla

In this article and going forward, I’ll be using the Rabbit Hole by Betsperts Golf data engine to develop my custom model. If you want to build your own model or check out all of the detailed stats, you can sign up using promo code: MATTVIN for 25% off any subscription package (yearly is best value).

Key Stats For Valhalla

Let’s take a look at five key metrics for Oak Hill to determine which golfers boast top marks in each category over their past 24 rounds.

1. Strokes Gained: Approach

Valhalla will play as a true all-around test of golf for the world’s best. Of course, it will take strong approach play to win a major championship.

Strokes Gained: Approach Over Past 24 Rounds

  1. Shane Lowry (+1.25)
  2. Scottie Scheffler (+1.09)
  3. Jordan Smith (+1.05)
  4. Tom Hoge (+.96)
  5. Corey Conners (+.94)

2. Strokes Gained: Off the Tee

Valhalla will play long and the rough will be penal. Players who are incredibly short off the tee and/or have a hard time hitting fairways will be all but eliminated from contention this week at the PGA Championship. 

Strokes Gained: Off the Tee Over Past 24 Rounds:

  1. Bryson DeChambeau (+1.47)
  2. Scottie Scheffler (+1.11)
  3. Keith Mitchell (+.90)
  4. Alejandro Tosti (+.89)
  5. Ludvig Aberg (+.82)

Strokes Gained: Total on Nickalus Designs

Valhalla is a classic Nicklaus Design. Players who play well at Nicklaus designs should have an advantage coming into this major championship. 

Strokes Gained: Total on Nicklaus Designs over past 36 rounds:

  1. Jon Rahm (+2.56)
  2. Scottie Scheffler (+2.48)
  3. Patrick Cantlay (+2.35)
  4. Collin Morikawa (+1.79)
  5. Shane Lowry (+1.57)

Strokes Gained: Tee to Green on Very Long Courses

Valhalla is going to play extremely long this week. Players who have had success playing very long golf courses should be better equipped to handle the conditions of this major championship.

Strokes Gained: Total on Very Long Courses Over Past 24 Rounds: 

  1. Scottie Scheffler (+2.44)
  2. Rory McIlroy (+2.24)
  3. Will Zalatoris (+1.78)
  4. Viktor Hovland (+1.69)
  5. Xander Schauffele (+1.60)

Strokes Gained: Total in Major Championships

One factor that tends to play a large role in deciding major championships is which players have played well in previous majors leading up to the event. 

Strokes Gained: Total in Major Championships over past 20 rounds:

  1. Scottie Scheffler (+3.14)
  2. Will Zalatoris (+2.64)
  3. Rory McIlroy (+2.49)
  4. Xander Schauffele (+2.48)
  5. Tommy Fleetwood (2.09)

Strokes Gained: Putting on Bentgrass Greens

Valhalla features pure Bentgrass putting surfaces. Players who are comfortable putting on this surface will have an advantage on the greens. 

Strokes Gained: Putting on Bentgrass Greens over Past 24 Rounds:

  1. Ludvig Aberg (+1.12)
  2. Denny McCarthy (+1.08)
  3. Matt Fitzpatrick (+0.99)
  4. Justin Rose (+0.93)
  5. J.T. Poston (0.87)

Strokes Gained: Total on Zoysia Fairways

Valhalla features Zoysia fairways. Players who are comfortable playing on this surface will have an advantage on the field.

Strokes Gained: Total on Zoysia Fairways over past 36 rounds: 

  1. Justin Thomas (+1.53)
  2. Will Zalatoris (+1.47)
  3. Xander Schauffele (+1.40)
  4. Brooks Koepka (+1.35)
  5. Rory McIlroy (+1.23)

2024 PGA Championship Model Rankings

Below, I’ve compiled overall model rankings using a combination of the key statistical categories previously discussed — SG: Approach (25%), SG: Off the Tee (22%), SG: T2G on Very Long Courses (12%), SG: Putting on Bentgrass (+12%), SG: Total on Nicklaus Designs (12%). SG: Total on Zoysia Fairways (8%), and SG: Total in Major Championships (8%). 

  1. Brooks Koepka
  2. Xander Schauffele
  3. Rory McIlroy
  4. Scottie Scheffler
  5. Bryson DeChambeau
  6. Shane Lowry
  7. Alex Noren
  8. Will Zalatoris
  9. Cameron Young
  10. Keith Mitchell
  11. Hideki Matsuyama
  12. Billy Horschel
  13. Patrick Cantlay
  14. Viktor Hovland
  15. Adam Schenk
  16. Chris Kirk
  17. Sahith Theegala
  18. Min Woo Lee
  19. Joaquin Niemann
  20. Justin Thomas

2024 PGA Championship Picks

Ludvig Aberg +1800 (BetMGM)

At The Masters, Ludvig Aberg announced to the golf world that he’s no longer an “up and coming” player. He’s one of the best players in the game of golf, regardless of experience.

Augusta National gave Aberg some necessary scar tissue and showed him what being in contention at a major championship felt like down the stretch. Unsurprisingly, he made a costly mistake, hitting it in the water left of the 11th hole, but showed his resilience by immediately bouncing back. He went on to birdie two of his next three holes and finished in solo second by three shots. With the type of demeanor that remains cool in pressure situations, I believe Ludvig has the right mental game to win a major at this point in his career.

Aberg has not finished outside of the top-25 in his past eight starts, which includes two runner-up finishes at both a “Signature Event” and a major championship. The 24-year-old is absolutely dominant with his driver, which will give him a major advantage this week. In the field he ranks, in Strokes Gained: Off the Tee, and has gained strokes in the category in each of his past ten starts. Aberg is already one of the best drivers of the golf ball on the planet.

In Norse mythology, Valhalla is the great hall where the souls of Vikings feasted and celebrated with the Gods. The Swedes, who are of Old Norse origin, were the last of the three Scandinavian Kingdoms to abandon the Old Norse Gods. A Swede played a major role in the 2014 PGA Championship at Valhalla, and I believe another, Ludvig Aberg, will be the one to conquer Valhalla in 2024. 

Bryson DeChambeau +2800 (BetMGM)

Bryson DeChambeau is one of the few players in the world that I believe has the game to go blow-for-blow with Scottie Scheffler. Although he isn’t as consistent as Scheffler, when he’s at his best, Bryson has the talent to beat him.

At The Masters, DeChambeau put forth a valiant effort at a golf course that simply does not suit his game. Valhalla, on the other hand, is a course that should be perfect for the 30-year-old. His ability to overpower a golf course with his driver will be a serious weapon this week.

Bryson has had some success at Jack Nicklaus designs throughout his career as he won the Memorial at Muirfield Village back in 2018. He’s also had incredible results on Bentgrass greens for the entirety of his professional career. Of his 10 wins, nine of them have come on Bentgrass greens, with the only exception being the Arnold Palmer Invitational at Bay Hill. He also has second place finishes at Medinah and TPC Summerlin, which feature Bentgrass greens.

Love him or hate him, it’s impossible to argue that Bryson isn’t one of the most exciting and important players in the game of golf. He’s also one of the best players in the world. A second major is coming soon for DeChambeau, and I believe he should be amongst the favorites to hoist the Wanamaker Trophy this week.

Patrick Cantlay +4000 (FanDuel)

There’s no way of getting around it: Patrick Cantlay has been dissapointing in major championships throughout his professional career. He’s been one of the top players on Tour for a handful of years and has yet to truly contend at a major championship, with the arguable exception of the 2019 Masters.

Despite not winning majors, Cantlay has won some big events. The 32-year-old has won two BMW Championships, two Memorial Tournaments as well as a Tour Championship. His victories at Memorial indicate how much Cantlay loves Nicklaus designs, where he ranks 3rd in the field in Strokes Gained: Total over his past 36 rounds behind only Scottie Scheffler and Jon Rahm.

Cantlay also loves Bentgrass greens. Six of Cantlay’s seven individual wins on the PGA Tour have come on Bentgrass greens and he also was one of the best putters at the 2023 Ryder cup at Marco Simone (also Bentgrass). At Caves Valley (2021 BMW Championship), he gained over 12 strokes putting to outduel another Bentgrass specialist, Bryson DeChambeau.

Cantlay finished 22nd in The Masters, which was a solid result considering how many elite players struggled that week. He also has two top-ten finishes in his past five PGA Championships. He’s undeniably one of the best players in the field, therefore, it comes down to believing Cantlay has the mental fortitude to win a major, which I do.

Joaquin Niemann +4000 (BetMGM)

I believe Joaquin Niemann is one of the best players in the world. He has three worldwide wins since December and has continued to improve over the course of his impressive career thus far. Still only 25, the Chilean has all the tools to be a serious contender in major championships for years to come.

Niemann has been the best player on LIV this season. Plenty will argue with the format or source of the money on LIV, but no one can argue that beating players such as Jon Rahm, Bryson DeChambeau, Dustin Johnson, Brooks Koepka and Cameron Smith is an unremarkable achievement. Niemann is an elite driver of the golf ball who hits it farther than just about anyone in the field not named Bryson DeChambeau or (arguably) Rory McIlroy.

Niemann is another player who has been fantastic throughout his career on Bentgrass greens. Prior to leaving the PGA Tour, Bentgrass was the only green surface in which Joaco was a positive putter. It’s clearly a surface that he is very comfortable putting on and should fare around and on the greens this week.

Niemann is a perfect fit for Valhalla. His low and penetrating ball flight will get him plenty of runout this week on the fairways and he should have shorter shots into the green complexes than his competitors. To this point in his career, the former top ranked amateur in the world (2018) has been underwhelming in major championships, but I don’t believe that will last much longer. Joaquin Niemann is a major championship caliber player and has a real chance to contend this week at Valhalla.

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19th Hole

PGA Tour pro takes to social media during round after being left unhappy with ruling

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During the of the inaugural Myrtle Beach Classic on the PGA Tour, Alejandro Tosti found himself in a precarious position around a bunker on the 7th hole on Sunday.

The Argentine was well out of contention, but when he approached his ball, he found it was wedged into the lip of the bunker. Feeling as though the ball was embedded, Tosti called over a rules official.

To his surprise, his request for relief for the embedded ball was denied.

Tosti took to his social media to post a video of the situation that he was able to record during the actual round!

The video was found on Tosti’s Instagram by Ryan French of “Monday Q Info” on X.

Tosti was able to salvage a bogey on the hole, but shot a final round 74 (+3) to finish in a tie for 63rd.

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19th Hole

Swing coach reveals why he recently told Brooks Koepka to ‘stop whinging’

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Editor’s note: Whinging (British English): “Continuous complaining, especially about something that does not seem important,” per the Cambridge Dictionary. 


At last month’s Masters Tournament, Brooks Koepka put forth a disappointing performance by his lofty standards.

The five-time major champion finished T45 a year after contending deep into Sunday of the 2023 Masters.

After the letdown, Koepka went to swing coach Pete Cowen, who he’s worked with for a decade, to ger him back on track.

Cowen spoke with The Telegraph, revealing what he said to the reigning PGA Champion.

“I gave him one of my old-fashioned b******ings when he was moaning to me about his putting. I told him to stop whinging and to just get to work on the issue. Again, that’s the sort of thing that triggers him. I gave him a b******ing before he won his first Major (the US Open) seven years ago.”

“He’s put in the hours and turned it around on the greens since then and with Valhalla being a big boys’ course, I can see him, at the very least, contending. If he wins, he’ll join (Sir Nick) Faldo and (Phil) Mickelson on six Majors and at his age that would be exciting. They’d probably still go on under-rating him, though.”

After the pep talk from Cowen, Koepka went on to win LIV Singapore.

As we enter the PGA Championship, three of the best players in the world, Scottie Scheffler, Rory McIlroy and Brooks Koepka will all be coming off a victory in their previous start.

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