How Should a Golfer Select the Right Shaft for His/Her Swing?
One of the most common posts I see on GolfWRX is when one golfer asks other golfers for a shaft recommendation. These posts seldom say anything about a golfer’s swing characteristics, other than his or her handicap and sometimes a clubhead speed.
Invariably, many different shaft recommendations follow, but rarely is there a follow-up question to ask the golfer anything more about his or her particular swing characteristics.
Shafts do not perform the same way for all golfers. Shafts perform differently for different swing characteristics because different swing characteristics make shafts bend and twist differently. Most golfers are aware that their clubhead speed has relevance to what shaft they should play. But in addition to the clubhead speed, there are several other swing characteristics which determine how different shafts can and do perform differently for different golfers.
Shafts are in essence “dumb animals.” There is absolutely NO magic to the performance of a shaft. They ONLY do what their owner’s swing characteristics ordain them to do.
For some golfers, there is some additional performance contribution from the center of gravity location inside the clubhead. However, there are a lot of different variations in how golfers swing the club with respect to the specific swing characteristics that dictate how a shaft will perform. The whole idea of analyzing the swing characteristics that are pertinent to shaft performance is to allow us to have a way to systematically ELIMINATE shafts from consideration for a golfer, so what is left would be a smaller, manageable number of shafts with which each golfer could play.
The KEY elements of the golf swing in shaft fitting
1. Club Head Speed
The clubhead speed affords a basic, rudimentary, BEGINNING indication for the approximate overall amount of bending force a golfer may put on a shaft. However, it is very common for two golfers with the same clubhead speed to put totally different amounts of bending force on a shaft.
It is also common for two golfers who put the same bending force on a shaft to have different clubhead speeds. This is why a good shaft fitter has to analyze other characteristics of the golf swing to get more of an idea of how much bending force the golfer is putting on the shaft for his/her swing speed, when that bending force is being applied to the shaft and where on the shaft is the most bending force being applied.
Clubhead speed gives us a starting point to help us begin to narrow the choice of possible shafts for a golfer in the fitting process. But it only tells us a part of the story.
2. Downswing Transition Force
The force with which the golfer starts the downswing determines the initial bending force on the shaft. In other words, how much the shaft is initially “loaded” is chiefly determined by the golfer’s transition force to start the downswing.
Of two golfers with the same clubhead speed, the one with the stronger, more forceful transition will need a stiffer shaft (a shaft with a swing speed rating that is higher than the golfer’s swing speed). Of two golfers with the same clubhead speed, the one with the smoother, passive transition will need a more flexible shaft (a shaft with a lower clubhead speed rating than the golfer’s swing speed).
In addition, a golfer with a stronger transition typically is better fit into a HEAVIER weight shaft. A strong/forceful transition with a very light shaft can result in a swing tempo that gets too fast and too inconsistent, although it can be possible to use a higher than normal swingweight to allow a golfer with a strong transition to not get too quick when using a very light shaft.
3. Downswing Tempo/Downswing Aggressiveness
We said the transition force determines the INITIAL loading of the shaft. The downswing tempo determines how much that initial loading may change during the rest of the downswing before impact.
Tests we have performed with special sensors on the shaft reveal that it is extremely rare for a golfer to increase the loading of the shaft during the downswing. It is not very common for a golfer to maintain the same load on the shaft during the downswing, either. Almost every golfer loads the shaft the most at the beginning of the downswing, after which the loading on the shaft begins to decrease from the moment the transition turns into the downswing.
A good shaft fitter will analyze the downswing tempo to estimate if the golfer is maintaining their initial loading of the shaft, slightly losing some of the loading or substantially losing it. In more recent research, we have come to the belief that the transition and tempo blend together in terms of the golfer’s ability to put a bending force on the shaft and maintain it or not to the point of release. Hence the good shaft fitter will analyze the transition/tempo together in one overall observation to decide whether the golfer is an AGGRESSIVE HITTER, a SMOOTH SWINGER, somewhere in between or variations of each extreme.
It really is not necessary to split the hair too fine on this evaluation. Good fitters chiefly think in terms of HITTER, SWINGER or AVERAGE when it comes to evaluating the effect of the transition/tempo on the golfer’s ability to load the shaft.
How is the analysis of the golfer’s transition/tempo used to help narrow down the shaft recommendation?
The more forceful and aggressive the golfer’s transition/tempo, the more the shaft would be selected to have a swing speed rating that is a little higher than the actual swing speed of the golfer. Vice versa, the more passive, smooth and easy the golfer’s transition/tempo, the more the shaft would be selected to have a swing speed rating that is a little lower than the actual swing speed of the golfer.
For example, let’s say we have three golfers, each with a 100 mph clubhead speed.
- Golfer No. 1 has a short, three-quarter length backswing with a fast, forceful transition and an aggressive downswing.
- Golfer No. 2 has a normal backswing length with some sense of transition force and downswing aggressiveness but not nearly as much as Golfer No. 1.
- Golfer No. 3 has a smooth, rhythmic, almost passive transition and tempo that identifies him as far more of a “swinger” than a “hitter.”
For basic fitting, Golfer No. 2 would be advised to look among shafts that have a 95-to-105 mph swing speed rating because his swing characteristics are putting an average amount of bending force on the shaft for his 100 mph clubhead speed.
Golfer No. 1 (strong/forceful transition and tempo) would be advised to look among shafts that would have a 100-to-110mph swing speed rating because his swing characteristics are “loading” the shaft more from him putting an ABOVE average amount of bending force on the shaft for his 100 mph clubhead speed.
And Golfer No. 3 (smooth, passive transition and tempo) should choose from shafts that have a 90-to-100mph swing speed rating because his swing characteristics are “loading” the shaft much less for his speed and put a BELOW average amount of bending force on the shaft for his 100 mph clubhead speed.
Three golfers in this example all had the same clubhead speed, yet each put a different bending force on the shaft. The more forceful and aggressive the transition/tempo, the higher the swing speed rating of the shaft should be in comparison to the golfer’s clubhead speed. The more passive and smooth the transition/tempo, the lower the swing speed rating of the shaft should be in comparison to the golfer’s clubhead speed. And for the golfer with the average transition/tempo, the swing speed rating of the shaft should allow for the golfer’s clubhead speed to be right in the middle of that range.
Here’s a little different way to look at this relationship of clubhead speed and transition/tempo versus the bend profile stiffness measurements and the swing speed rating for shafts.
In short, as the golfer puts more bending force on the shaft due to his transition and tempo, the swing speed rating of the shaft needs to increase higher than the golfer’s actual clubhead speed. And as the golfer puts less bending force on the shaft due to his transition and tempo, the swing speed rating of the shaft needs to decrease lower than the golfer’s actual clubhead speed.
But what’s next after finding the shafts which have a swing speed rating that corresponds to the golfer’s clubhead speed and adjustments for the golfer’s transition and tempo?
4. Point of Wrist-Cock Release During the Downswing
The key swing characteristic that good shaft fitters analyze to determine the correct TIP STIFFNESS design of the shaft for the golfer is the point the golfer unhinges their wrist cock release on the downswing. In swing mechanics terms, the action of unhinging the wrist cock angle is called the RELEASE.
The point when the golfer releases the club is what determines WHEN the shaft goes from being “loaded” to being “unloaded.” The point when the golfer releases the club determines when the shaft moves from a “flexed back” position into a “flexed forward” position. The point of release also determines when the clubhead achieves its highest speed.
Once the golfer unhinges the wrist cock angle, the arms immediately begin to slow down while the clubhead speeds up. If the golfer releases the club too early, the clubhead reaches its highest speed well before it gets to the ball. With an early release, by the time the clubhead gets to the ball, the clubhead speed has slowed down. This slowing down of the clubhead before impact even happens for golfers who release the club midway on the downswing – though not as much as with an early release.
The only golfers who achieve their highest clubhead speed right when the clubhead meets the ball are golfers with a late release. Hence, this is another reason why a late release is such an important swing skill for golfers to achieve to be able to play to the best of their physical skills.
In shaft fitting terms, the later the golfer releases the club, the more tip stiff the shaft COULD be. And conversely, the earlier the golfer releases the club, the more tip flexible the shaft should be. Because the actual point of release can vary all the way from the start of the downswing to the very end, so too the tip stiffness design of the shaft is chosen to correspond.
- Early release = most tip flexible
- Latest release = most tip stiff
- Release in between early and very late = tip stiffness in between.
You can now start to see why we need to have quantitative stiffness measurements of shafts so we can choose the right level of stiffness for golfers with varying levels of transition/tempo force and different points of release. With only letters for flex and generic terms for tip stiffness or bend point, shaft fitting is little more than a trial-and-error guess.
Below is a chart that offers some examples for how to combine the golfer’s clubhead speed, transition/tempo evaluation and the golfer’s point of release to narrow the choices for a suitably fit shaft:
5. The Qualitative Side of Shaft Fitting: The Golfer’s Perception and Preference for the Shaft’s BENDING FEEL
Talk about something that can throw a monkey wrench into all the logical things that we have taught so far about shaft flex/bend profile fitting! If you want to know why some golfers play well with shafts that are “on paper” considered to be too stiff, too flexible, too tip stiff or too tip flexible for their clubhead speed, transition/tempo and point of release, this is the reason why.
If a golfer has developed a specific preference for a type of bending feel of the shaft during any point in the swing, that feel preference has to be THE GUIDING FACTOR in the shaft fitting process. During the fitting process, the smart, experienced clubfitter knows to interview the player and ask questions to assess the golfer’s level of perception for the bending feel of the shaft and whether they have acquired specific “likes and dislikes” for various aspects of the shaft’s bending feel during the swing.
The very best way to incorporate a golfer’s preference for shaft feel in the shaft fitting process is to have the golfer reveal specific shafts they have either liked or disliked in previous or current clubs. If these shaft models/flexes are searched in the Bend Profile Software we created, the stiffness measurements of those shafts can then be referenced against possible future shaft recommendations to determine if the new shaft selection may or may not satisfy the golfer’s shaft feel preferences.
One of the myths about shaft flex/bend profile performance is when someone states that this or that shaft is designed in a way that can actually increase the bending velocity of the shaft to offer a golfer a higher clubhead speed. This is impossible because of the physics of tube design and performance. However, it is very possible for a golfer to change to a different shaft flex/bend profile design and experience a measurable increase in clubhead speed.
How this happens is how the new shaft falls into the golfer’s preference for the bending feel of the shaft. Give a golfer a shaft that feels perfect in terms of how much it bends, when it bends and where it bends in relation to the golfer’s acquired preference for bending feel and that golfer will achieve his most free, most unrestricted and most fluid release through the ball. And it is from this – having a shaft that feels perfect in every way to the golfer – that they are able to achieve a higher clubhead speed.
On the other hand, put the golfer into a shaft that demonstrates a feeling of being too stiff or too flexible in some way compared to the golfer’s preference for bending feel and they most typically will begin to change their swing to make the shaft perform and feel as they prefer. Manipulating the swing means a lack of free motion, free unrestricted release and a lower clubhead speed with less swing consistency.
Again, to not have a truly quantitative way to analyze shafts, trying to turn a golfer’s feel preferences for the shaft into a valid new shaft recommendation becomes a trial and error process.
6. Putting It All Together
The higher the golfer’s clubhead speed, the more forceful/aggressive the transition and tempo, the later the release, the more the flex and the bend profile of the shaft become a contributor to the launch angle, trajectory and spin rate for the shot. The lower the clubhead speed, the more passive the transition and tempo, the earlier the release, the less important the shaft’s flex and bend profile are to performance. But for ALL golfers, the WEIGHT of the shaft is an important part of the shaft selection process.
The higher the golfer’s clubhead speed, the more forceful/aggressive the transition and tempo, and the later the release IN RELATION TO THE SWING SPEED RATING and TIP STIFFNESS OF THE SHAFT, the more the shaft can increase launch angle, trajectory and spin.
The shaft only just begins to contribute to launch angle, trajectory and spin in a gradual increasing manner as the golfer has a midway to later to very late release. Midway release, the flex and bend profile begin to matter a little. Very late release, the stiffness design of the shaft matters a lot more. For golfers with an early to before midway release, the flex and bend profile of the shaft do virtually nothing to the launch angle, trajectory and spin of the shot. The shaft’s WEIGHT becomes the only key shaft fitting factor for golfers with an early to before midway release.
The ONLY ways the shaft can lower launch angle, trajectory and spin is:
- If the shaft is either more stiff overall than the golfer’s previous/current shaft, or…
- If the tip section of the shaft is more stiff than the tip section in the golfer’s previous/current shaft.
Just because a shaft is said to be tip stiff will not reveal whether it is a lower spin shaft than what you play now. A shaft has to be more stiff overall and/or more tip stiff than what you play now to have any effect on lowering launch angle, trajectory and spin.
The golfer’s preferences for a specific bending feel of the shaft overshadow the stiffness and bend profile fitting analysis compiled from the clubhead speed, transition/tempo and point of release. In all cases for all golfers, you do go through the stiffness and bend profile fitting analysis compiled from the clubhead speed, transition/tempo and point of release, but you listen hard and consider modifying the recommendation when the golfer says they have a specific preference for the bending feel of a shaft.
- Part 1 — Taking the guesswork out of selecting shafts
- Part 2 — Taking shaft fitting from guessing to specifics
- Part 3 — Facts about shafts, and what they do
Is golf actually a team sport?
Do a little research on the top PGA Tour players, and what you’ll see is that most (if not all of them) employ a team of diverse professionals that support their efforts to perform on the golf course. Take two-time major champion Zach Johnson; he has a team that includes a caddie, a swing instructor, a sports psychologist, a physiotherapist, an agent, a statistician, a spiritual mentor, a financial adviser… and of course his wife.
“I know this seems like a lot, and maybe even too much,” Johnson readily admitted. “But each individual has their place. Each place is different in its role and capacity. In order for me to practice, work out and just play golf, I need these individuals along the way. There is a freedom that comes with having such a great group that allows me to just play.”
My best guess is that Zach Johnson commits hundreds of thousands of dollars each year to this team, and I assume most players on the leading professional tours are making significant investments in their “teams.” There are three questions that jump out at this point. First, is a team necessary? Second, how can anyone compete without one? And third, how to pay for it?
From the club player to the collegiate player to the aspiring/touring professional, everyone can benefit from a team that offers individual instruction, support, guidance, and encouragement. Such a team, however, needs to be credible, timely, beneficial and affordable.
To be affordable, serious golfers should build their team one piece at a time. The obvious first choice is a swing coach. Golf swing coaches charge from $100-$1,500 per hour. The cost explains why players have historically been responsible for their own practice. The next piece, which is a newly developing trend, should be a performance coach who specializes in the supervision of practice, training and tournament preparation. Performance coaching on-site fees range from $200 to $3,000 per day.
So is team support essential for a player to be as good as he/she can be? My research says it is. When a player schedules a practice session, that session is usually based on what the player likes to do or wants to do. “Best Practices” utilized by world-class athletes suggest strongly that great progress in training always occurs when someone other than the player writes, administers and supervises the programs and sessions. The team approach says the player should focus on what needs to be done. Sometimes what the player wants to do and the things needed to be done are the same thing; sometimes they aren’t.
Now for the question of how to pay for it all. Wealthy players, or those with substantial or institutional support, have access to what they need or want… whatever the cost. If you use an on-site coach, teacher or other professional you will be paying for blocks of time. Fees can be hourly, weekly, monthly, yearly or lifetime arrangements based upon several factors. If your coach of choice is not local, you can also incur travel and per diem expenses. The process of paying for someone’s time can really add up. You can review what I charge for various services that require my attendance at edmyersgolf.com.
For those of you who don’t have easy access to on-site expertise or don’t want to incur the expense, I want to offer an approach that business, industry, colleges/universities and entrepreneurs are turning to: “Distance Coaching.” Distance learning is made possible through modern technology. In today’s world, expertise can be delivered using FaceTime, Skype, texting, email and (old fashion) phone calls. Textbooks, videos, specific programs and workbooks can be accessed from anywhere at any time by anyone with a desire to do so… and who knows what’s coming in the future. Through Distance Coaching, individuals can employ professional expertise on an as-needed basis without incurring huge costs or expenses.
The primary team expenses that can be avoided are those associated with face-to-face, on-site visits or experiences. Distance Coaching brings whatever any player needs, wants or desires within financial reach. For example, a player in Australia can walk onto the practice ground and have that day’s practice schedule delivered to a personal device by his/her performance coach. The player then forwards the results of that session back to the coach — let’s say in Memphis, Tennessee. The player is then free to move onto other activities knowing that the performance, training and preparation process is engaged and functioning. In the same vein, that same player in Australia may have moved into learning mode and he/she is now recording the golf swing and is sending it to the swing teacher of choice for analysis and comment.
So what is the cost of Distance Coaching? Teachers, trainers and coaches set their own fees based upon their business plan. Some require membership, partnership or some other form of commitment. For example, I offer free performance coaching with the purchase of one of my books or programs, as do others. Where face-to-face, on-site fees for performance coaching is available for $200 a day, the same expertise from the same coach can cost as little as $50 a month using the distance format, tools and technology. I highly recommend that players responsibly research the options available to them and then build the best team that fits their games, desires and goals. I’m happy to forward a guide of what to look for in a performance coach; just ask for it at firstname.lastname@example.org.
Back to Zach Johnson; he recently admitted that his lack of recent success could be traced to his lack of focus and practice discipline. Additional, he concedes that he has been practicing the wrong things. “It goes back to the basics,” he said. “I have to do what I do well. Truth be told, what I’m practicing now is more on my strengths than my weaknesses.”
Zach Johnson has a great team, but as he concedes, he still needs to put in the work.
What is “feel” in putting… and how do you get it?
You’re playing a course for the first time, so you arrive an hour early to warm-up. You make your way toward the practice green and you see a sign at the first tee that reads, “GREEN SPEED TODAY 11.” That brings up two issues:
- How did they arrive at that number?
- How is that information valuable to me?
How did they arrive at that number?
They used what’s known as a stimpmeter — a device that’s used to measure the speed of a green. With a stimpmeter, the green’s surface is tested by rolling a ball down the 30-inch ramp that is tilted downward at a 20-degree angle. The number of feet the ball rolls after leaving the ramp is an indication of the green’s speed. The green-speed test is conducted on a flat surface. A total of three balls are rolled in three different directions. The three balls must then finish within eight inches of each other for the test to be valid.
For example, if the ball is rolled down the ramp and were to stop at 8 feet, the green would be running at an “8.” Were the ball to roll down the ramp and stop at 12 feet, the green would be running at a “12.”
The stimpmeter was invented by Edward S. Stimpson, Sr., a Massachusetts State Amateur Champion and former Harvard Golf Team Captain. After attending the 1935 U.S. Open at Oakmont, he saw the need for a universal testing device after watching Gene Sarazen, who was at the top of his game, putt a ball off the green. He was of the opinion that the greens were unreasonably fast, but he had no way to prove it — thus the motivation for creating the invention.
The device is now used by superintendents to make sure all of their greens are rolling close to the same speed. This ensures that golfers are not guessing from one putt to another if a green is fast or slow based on the way it is maintained. The device is also used by tournament officials who want to make sure that green speed is not too severe.
Do Stimp readings matter for my game?
Not very much. That piece of abstract knowledge is of little value until you can translate it into your own personal feel for the speed of the putt. There is a method that will allow you to turn green speed into a legitimate feel, however, and you don’t even need a stimpmeter or a stimp reading to do it. I call it “Setting Your Own Stimpmeter.”
Before we get to how to do it, the first step is to determine if the putting green is the same speed as the greens on the course. The best source of information in this regard are the professionals working in the golf shop. They will be happy to share this information with you. You only need to ask. Assuming that the speed of the putting green is close to the speed of the greens on the course, you are ready to begin setting your own stimpmeter. This is done by inputting data into your neuromuscular system by rolling putts and visually observing the outcome.
Contrary to what most golfers believe, a golfer’s feel for distance is based in the eyes — not in the hands, which only records tactile information. It’s just like basketball. On the court, you look at the distance to the hoop and respond accordingly. While you would feel the ball in your hands, it doesn’t play a role in determining the proper distance to the hoop. Based on what you saw with your eyes, you would access the data that had been previously inputted through shooting practice.
Setting your own Stimpmeter
- Start by finding a location on the putting green that is flat and roughly 15 feet away from the fringe.
- Using five balls, start rolling putts one at a time toward the fringe. The objective is to roll them just hard enough for them to finish against the edge.
- You may be short of the fringe or long, but it is important that you do not judge the outcome— just observe, because the feel for distance is visually based.
- You should not try and judge the feel of the putt with your hands or any other part of your body. You can only process information in one sensory system at a time — that should be the eyes.
- You should continue to roll balls until you’ve reach the point that most of them are consistently finishing against the fringe. Once you can do that, you have successfully set you stimpmeter.
The key to the entire process is allowing yourself to make a subconscious connection between what your eyes have observed and the associated outcome. You must then trust what you have learned at a sub-conscious level. A conscious attempt to produce a given outcome will short-circuit the system. When it comes to judging speed, you must be prepared to surrender your conscious mind to your sub-conscious mind, which is infinitely wiser and more capable of calculating speed. Want proof? Work through the steps I’ve outlined below. .
- After having loaded the data as described in the exercise above, pace off a 25-foot putt.
- Using the same five balls, putt to the hole as you would normally using your conscious mind to control the outcome.
- Mark the location of the five balls with a tee pushing them down until they are level with the surface of the green.
- Allow your eyes to work slowly from the ball to the hole while clearing your conscious mind of any thought.
- Using the same five balls, putt to the hole allowing your subconscious mind to control the outcome.
- Compare the proximity of the five putts that you just hit to those marked with a tee. What do you observe?
Did you have trouble clearing your mind of any conscious thought? Assuming that your conscious mind intruded at any point, the outcome would be negatively affected. You should then repeat the exercise but this time, emptying your mind of any thought. You will have mastered the technique when you are able to quiet your conscious mind and allow your subconscious to take over.
This technique will improve your proximity to the hole on longer putts. And you know what that means? Fewer three-putts!
Editor’s Note: Rod Lindenberg has authored a book entitled “The Three-Putt Solution” that is now available through Amazon.
TG2: What is this new Callaway iron? A deep investigation…
Photos of a new Callaway iron popped up in the GolfWRX Forums, and equipment expert Brian Knudson and Editor Andrew Tursky discuss what exactly the new iron could be; new Apex pros, new Legacy irons, or maybe even a new X Forged? Also, the guys discuss Phil’s U.S. Open antics and apology, DJ’s driver shaft change, new Srixon drivers and utility irons, and a new Raw iron offering from Wilson. Enjoy the golf equipment packed show!
Check out the full podcast on SoundCloud below, or click here to listen on iTunes!
The story behind Jason Dufner’s new National Custom Works irons
GolfWRX Members Choice: The best blade irons of 2018
Aaron Wise’s Winning WITB: 2018 AT&T Byron Nelson (updated 5/22 with photos)
Everything former Nike rep Ben Giunta said about working with Tiger Woods
Spotted: New Titleist “TS2” and “TS3” drivers at the 2018 U.S. Open
Spotted: Ping i210 irons and Glide Forged wedges
Webb Simpson’s Winning WITB: The 2018 Players Championship
Brooks Koepka’s Winning WITB: 2018 U.S. Open
Tiger Woods explains the origin of his famed stinger
Dustin Johnson’s Winning WITB: 2018 FedEx St. Jude Classic
Baba Booey for Life! Does this GolfWRX member have a point?
Oh boy, here’s a heater. On the subject of Baba Booey-ing at golf tournaments, WRX member Stickner started a thread,...
Both Rory McIlroy and Jordan Spieth laughed at Phil Mickelson’s 13th hole antics
The image of 48-year-old Phil Mickelson jogging after his golf ball on the 13th green at Shinnecock, Saturday, was bizarrely...
In other Phil Mickelson news…robot-delivered food
Not an Onion story; real thing that is actually happening here. Phil Mickelson and his manager/business partner, Steve Loy have...
Greg Norman is appearing in ESPN’s Body Issue, like he told us he would
As he said he’d consider doing when asked by Michael Williams on our 19th Hole podcast, Greg Norman is set...
Equipment2 weeks ago
GolfWRX Members Choice: The best blade irons of 2018
Equipment1 week ago
Spotted: New Titleist “TS2” and “TS3” drivers at the 2018 U.S. Open
Equipment2 weeks ago
Spotted: Ping i210 irons and Glide Forged wedges
pga tour4 days ago
Brooks Koepka’s Winning WITB: 2018 U.S. Open
pga tour2 weeks ago
Dustin Johnson’s Winning WITB: 2018 FedEx St. Jude Classic
Popular Photo Galleries2 weeks ago
Sunday’s Photos from the 2018 U.S. Open at Shinnecock Hills
Popular Photo Galleries1 week ago
Monday’s Photos from the 2018 U.S. Open at Shinnecock Hills
pga tour3 weeks ago
Bryson DeChambeau’s Winning WITB: 2018 Memorial Tournament