Connect with us

Opinion & Analysis

The Wedge Guy: Spin 2: An examination of impact



Last week, I gave an overview of all the factors that I believe affect spin and promised to dive deeper into the dynamics of impact this week.

But first, thanks to all of you who chimed in with your comments. Those keep me going, whether you totally agree with me (or completely disagree) I enjoy reading what you all have to say. I will be the first to admit that the science of golf is unsettled…we continually learn more and more about the dynamics of swinging a golf club and striking a ball. And that’s a good thing.

In today’s post, I want to share what I believe to be true about impact – lessons learned from observing thousands of golfers of all skill levels, interacting and analyzing over 50,000 wedge-fitting profiles from our online engagements, and analyzing data from Iron Byron testing of wedges of all lofts, makes and models over the years.

So here goes.

From all that input I’ve gained over the years, I believe that some golfers are just always going to spin the ball better than others. I also believe that anyone can learn to spin the ball better, if they are willing to invest in instruction and practice, but that is what it takes. Ever since the USGA and R&A changed the rules on groove geometry in 2010, and eliminated those sharp-edged square grooves, spin just isn’t “for sale” anymore.

So, let’s first dive into the dynamics of the wedges you play. But we’re not going to address clubhead speed, as I believe we all agree that faster speed results in more spin. While that doesn’t mean you should try to hit your wedges harder, it is a piece of information you should know. What you can do with that is try to leave yourself lay-up shots that give you more full-swing wedges into the green than those dreaded ‘half-wedges.’

There is no question that very new wedges, with fresh grooves and no face wear yet, will help you spin the ball better than an old worn out wedge. But is it realistic to think that all of us can just run out and get new wedges every 40-50 rounds, as one major wedge manufacturer suggests? Probably not.

The next best thing is to keep your wedge face and grooves as clean as possible for each shot. After you take your practice swings on that wedge shot, give your club a good wiping down with a towel to get it as clean as possible – that will definitely help.
Likewise, I have learned that softer shafts will help you spin the ball better, as will graphite over steel in my opinion and observation.

One of the most critical factors of wedge spin as a result of impact is the exact point on the face where impact is made. We’ve all heard “thin to win,” and that is truer with wedges than any other club. Generally speaking, the lower on the face you make contact, the lower launch angle you will get and the more spin the ball will take on.

In the many Iron Byron tests of wedges of all makes and models that I have analyzed, I’ve learned that spin will dramatically drop off as impact is moved higher on the head and toward the toe as well. In a recent test, we saw top-brand wedges deliver spin variances as much as 35-45 percent from impacts as little as 3/8” from center. When we measured the range from maximum spin (low face) to minimum spin (high face and toe), most wedges would see variances of as much as 55 percent!

I will tell you that tour players and top-level amateurs generally strike their wedge shots lower on the face than most recreational players. So, if you want to learn to spin your wedges better, practice making impact lower on the face. Impact tapes are a good way to see your own results and the effect of your practice. The two photos below are from a well-known tour player’s wedge (above) and that of a low-single-digit player’s wedge (below). That lower impact pattern of just 2-3 grooves gives the tour player a lower launch angle, more distance and much more spin on a consistent basis.

Tour pro

low single digit

The other element of impact that you can learn and improve on is your angle of approach to the ball, and the quality of your impact. To get maximum spin from your skill set and strength profile, you must make absolutely sure you contact the ball before the turf, and that your clubhead is moving slightly downward at impact. You don’t need to dig up “beaver pelts,” but you do need to make clean contact with the ball first. A very good amateur golfer I knew well would never take much divot at all, he just nipped the ball clean and “shaved” the grass with each iron shot. But darn, he spun the ball and controlled his trajectories as well as anyone I ever saw that didn’t do this for a living.

So, I hope this helps those of you who would like to learn to spin the ball better with your wedges. To recap:

  • Make sure your grooves and face are clean before the shot that counts.
  • Learn to make contact lower on the face consistently.
  • Learn how to make a clean descending path through impact (A tip I can offer that works for most golfers is to focus your eyes on the forward edge of the ball for all wedge shots – the side toward the target. It really does work)

I hope you all enjoyed this two-part series on spin. I would also appreciate you sending me an email with ideas of things you would like me to address in future articles. My knowledge, insights, and opinions are yours for the asking. Just send that email to

Your Reaction?
  • 169
  • LEGIT11
  • WOW1
  • LOL2
  • IDHT1
  • FLOP1
  • OB1
  • SHANK10

Terry Koehler is a fourth generation Texan, a native of a small South Texas town and a graduate of Texas A&M University. He has had a most interesting 40-year career in the golf industry. He has created five start-up companies, ranging from advertising agencies to golf equipment companies. You might remember Reid Lockhart, EIDOLON, or SCOR, but you would certainly know his most recent accomplishment: the reintroduction of Ben Hogan to the golf equipment industry in 2015. Terry has been a prolific equipment designer of over 100 putters and several irons, but many know Koehler as simply “The Wedge Guy”, as he authored over 700 articles on his blog by that name from 2003-2010. For almost 25 years, his wedge designs have possibly stimulated other companies to also try to raise the CG and improve wedge performance.



  1. jamho3

    May 10, 2019 at 8:17 am

    TK in 2020!

    Thanks for the thoughtful post, I can see how difficult it is to get things just right when so many factors are in play. Science, real experience, knowledge of Am’s, Pros playing conditions and so forth.

    I appreciate the discernment that goes into your writing with your efforts to help us.

    New product by 2019 The Open or we’re going on strike!

  2. Brando

    May 8, 2019 at 9:35 pm

    I think lie angle is overlooked when it comes to wedges and putters. It’s very important in my opinion. My lob wedge is the flatest club in my bag. I just bent my putter 1 degree flater and putting so much better now and hitting the sweet spot again.

  3. Layne Yawn

    May 8, 2019 at 5:48 pm

    I have a lob wedge with 10* of bounce. All my lob wedges in the past have had about 5*-6* of bounce. Is it possible to shave a small amount off the bounce? Our fairways are extremely tight as well as the chipping areas around the green. I just don’t seem to hit the quality wedge shots like I use to and being 65 doesn’t help. I like the wedge, I like the way it looks and feels. A lower bounce was not an option offered by the manufacturer. What would you suggest?
    Thank you

  4. Luke

    May 7, 2019 at 4:20 pm

    Any opinion on re-grooving with groove tools?

    • Terry Koehler

      May 8, 2019 at 10:40 am

      Hello Luke, the main issue with re-grooving wedges is that the process removes material, of course, which will then likely make your grooves exceed USGA specifications, and possibly sharpen the edges too much as well. If you and your golf buddies don’t mind your wedges being non-conforming, I guess it’s not an issue. But you should be aware of this . . .

  5. Tom Newsted

    May 7, 2019 at 2:35 pm

    So the question in my mind is what is a realistic number of rounds before we look to replace a wedge. Currently I do it once a year but then again I use all three a great deal and I normally get in about 60-70 rounds a year.

    • Terry Koehler

      May 8, 2019 at 10:43 am

      Good question, Tom. A major brand is saying that wedges exhibit significant spin loss after 50 rounds, but they are not specific on how many shots that represents. If you practice a lot with them, you might not even get that many.
      My suggestion is to get a good magnifier and visually examine the grooves and face texture often, comparing the center impact area to the perimeter of the scored area where you make impact much less often, and make that call yourself. I also recommend that you practice with your older wedges if you replace them, and keep your new ones fresh for actual play.

      • Chris

        May 8, 2019 at 8:15 pm

        Wow, as simple as the thought of practicing with an old wedge is, I never thought about it. Thanks.

Leave a Reply

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

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Opinion & Analysis

5 most common golf injuries (and how to deal with them)



You might not think about golf as a physically intensive game, but that doesn’t change the fact it is still a sport. And as with every sport, there’s a possibility you’ll sustain an injury while playing golf. Here’s a list of the five most common injuries you might sustain when playing the game, along with tips on how to deal with them in the best way possible so you heal quickly.


While not directly an injury, it’s paramount to talk about sunburns when talking about golf. A typical golf game is played outside in the open field, and it lasts for around four hours. This makes it extremely likely you’ll get sunburnt, especially if your skin is susceptible to it.

That’s why you should be quite careful when you play golf

Apply sunscreen every hour – since you’re moving around quite a lot on a golf course, sunscreen won’t last as long as it normally does.

Wear a golf hat – aside from making you look like a professional, the hat will provide additional protection for your face.

If you’re extra sensitive to the sun, you should check the weather and plan games when the weather is overcast.

Rotator Cuff Injury

A rotator cuff is a group of four muscles that surround the shoulder joint. This group are the main muscles responsible for swing movements in your arms. It’s no surprise then that in golf, where the main activity consists of swinging your arms, there’s a real chance this muscle group might sustain an injury.

To avoid injuries to this group, it’s imperative you practice the correct form of swinging the club. Before playing, you should also consider some stretching.

If you get an injury, however, you can recover faster by following RICE:

Rest: resting is extremely important for recovery. After an injury, the muscles are extremely vulnerable to further injury, and that’s why you should immediately stop playing and try to get some rest.

Ice: applying ice to the injured area during the first day or two can help. It reduces inflammation and relaxes the muscles.

Compress: bandage the rotator cuff group muscle and compress the muscles. This speeds up the muscle healing process.

Elevate: elevate the muscles above your heart to help achieve better circulation of blood and minimize fluids from gathering.

Wrist Injuries

Wrist tendons can sustain injuries when playing golf. Especially if you enjoy playing with a heavy club, it can put some strain on the wrist and cause wrist tendonitis, which is characterized by inflammation and irritation.

You should start by putting your wrist in a splint or a cast – it is necessary to immobilize your wrist to facilitate healing.

Anti-inflammatory medicine can relieve some of the pain and swelling you’ll have to deal with during the healing process. While it might not help your wrist heal much quicker, it’ll increase your comfort.

A professional hand therapist knows about the complexities of the wrist and the hand and can help you heal quicker by inspecting and treating your hands.

Back Pain

A golf game is long, sometimes taking up to 6 hours. This long a period of standing upright, walking, swinging clubs, etc. can put stress on your back, especially in people who aren’t used to a lot of physical activities:

If you feel like you’re not up for it, you should take a break mid-game and then continue after a decent rest. A golf game doesn’t have any particular time constraints, so it should be simple to agree to a short break.

If you don’t, consider renting a golf cart, it makes movement much easier. If that’s not possible, you can always buy a pushcart, which you can easily store all the equipment in. Take a look at golf push cart reviews to know which of them best suits your needs.

Better posture – a good posture distributes physical strain throughout your body and not only on your back, which means a good posture will prevent back pain and help you deal with it better during a game.

Golfer’s Elbow

Medically known as medial epicondylitis, golfer’s elbow occurs due to strain on the tendons connecting the elbow and forearm. It can also occur if you overuse and over-exhaust the muscles in your forearm that allow you to grip and rotate your arm:

A nonsteroidal anti-inflammatory drug is the way to go to alleviate the most severe symptoms of the injury at the beginning.

Lift the club properly, and if you think there’s a mismatch between your wrist and the weight of the club, you should get a lighter one.

Learn when you’ve reached your limit. Don’t overexert yourself – when you know your elbow is starting to cause you problems, take a short break!

Your Reaction?
  • 2
  • LEGIT0
  • WOW0
  • LOL0
  • IDHT0
  • FLOP2
  • OB1
  • SHANK14

Continue Reading


TG2: Our PGA picks were spot on…and Rob hit a school bus with a golf ball



Rob picked Brooks to win the PGA and hit the nail on the head, while Knudson’s DJ pick was pretty close. Rob hit a school bus with a golf ball and we talk about some new clubs that are going to be tested in the next couple days.

Check out the full podcast on SoundCloud below, or click here to listen on iTunes or here to listen on Spotify.

Your Reaction?
  • 1
  • LEGIT0
  • WOW0
  • LOL0
  • IDHT0
  • FLOP1
  • OB1
  • SHANK1

Continue Reading


The Gear Dive: Vokey Wedge expert Aaron Dill



In this episode of The Gear Dive, Johnny chats with Titleist Tour Rep Aaron Dill on working under Bob Vokey, How he got the gig and working with names like JT, Jordan and Brooks.

Check out the full podcast on SoundCloud below, or click here to listen on iTunes or here to listen on Spotify.

Your Reaction?
  • 6
  • LEGIT0
  • WOW0
  • LOL0
  • IDHT0
  • FLOP0
  • OB1
  • SHANK18

Continue Reading

19th Hole