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Opinion & Analysis

The key to putter fitting? Know your roll



This is the second installment of a four-part series from Modern Golf on putter fitting and the Quintic System. 

Find a busy practice putting green, and it’s almost guaranteed that you’ll see at least a few golfers obsessing over the motion of their putting stroke. They’re usually the ones who are using some kind of training aid to help them groove their stroke in a certain way.

For many golfer, it can be time well spent. But what they might not know is that the way their putter moves is only half the equation to good putting. Did you know that two putts with the same clubhead speed can travel significantly different distances? Did you also know that most golfers actually do a good job of consistently swinging the putter through at their desired speed? So why do so many golfers have problems with their distance control? The other half of the equation is controlling what is called their ball roll.

How do golfers control how their ball roll? How should the ball be rolling? It is a very difficult question to answer without using high-speed cameras and motion capturing. Using a system called Quintic, we provide golfers the knowledge and data they need to putt their best. Understanding this data will improve your game.

The image below shows what an ideal 8-foot putt looks like on our Quintic System. 

Ideal Putt

Click the image to enlarge it.

Forward Rotation

As you can see, the ball instantly started to rotate forward off the putter face. A ball that has negative initial ball roll, or “backspin,” will lose speed and can deflect offline. Having the ball rotate forward off the face will give players better distance control with their putts because the ball will lose less energy and stay on its intended line longer. This will aid the ball in rolling over debris and other imperfections on the green such as ball marks, spike marks, etc.

Having anywhere from +25 rpm to +50 rpm initial ball roll is ideal. Any higher and the ball will roll out longer because it will be carrying more momentum. This can make downhill 5 footers scarier than they already are. With an rpm under +20 rpm, the ball doesn’t carry as much momentum to the hole.


The ball was launched at about 1.75 degrees. An ideal launch angle on most greens is between 0.75 degrees and 2 degrees. Much like a driver, controlling launch has a big influence on how far the ball will travel. That is because on the green, a ball will sit in a small depression as a result of gravity. The ball needs to be launched out of this depression — and not too high or too low. Optimal launch should change depending on the blade length of the grass and the type of putting surface. On lush greens with a longer blade length, the ball will sit in a deeper depression. On firm greens with a short blade length, the ball will not sit in such a deep depression, and for that reason not as much launch is required.

The image below shows what happens to a putt that has a launch angle that is too high.

High Launch

Click the image to enlarge it.

Zero Skid

Minimal skid is ideal. On a well struck putt, there should be less than 10 percent skid for the total distance the ball travels. So on an 8-foot putt, ideally there should be less than 10 inches of skid (see first image). Once “zero skid” occurs, the ball starts rolling on top of the grass smoothly. When there is too much skid, the result is a loss of distance and ball speed. Every time the ball bounces and strikes the putting surface it loses energy — energy that has been factored into your putt for speed and distance. These putts tend to come up short and offline, and this often happens with long putts or lag putts.

Below are images of a “dew board.” The board simulates putting through an early morning dew where it is easy to see launch and skid. There are two visible lines on the board. The putt that has a flat and consistent line has optimal launch and minimal skid. The putt that looks dotted or chattered has launched too high, increasing the zero skid parameter. The dots are where the ball has struck the putting surface and continues to hop until it reaches zero skid.


Every putt, at some point, reaches zero skid. Reducing the amount of time it takes for the ball to reach zero skid will ensure that the ball will lose minimal energy and carry more momentum to the hole.

Impact Ratio

This refers to how efficiently clubhead speed is converted into ball speed. For all of those Trackman users out there, this is the same as smash factor. It is a simple calculation: ball speed divided by clubhead speed. Controlling the speed that the ball comes off the face is crucial. This is achieved when the center mass of the club head makes contact with the center mass of the golf ball. Any off-center strike results in a loss of ball speed and face deflection, causing the ball to roll offline with less speed.  

We’ve all hit full shots that weren’t solidly struck and they come up short of our target.  The exact same thing happens when we don’t hit a putt solid, but it’s much harder to feel the mishit because the clubhead speed is much slower through impact with a putter. This is where most golfers struggle.

The face of the putter also needs to be square to the path of the club. Otherwise, you’ll see a glancing blow that also reduces ball speed. The type of putter a player uses also has an effect on ball speed. Putters with softer inserts reduce ball speed because of reduced energy transfer from the club head to the ball. To illustrate where you strike the ball on the clubface, spray the face of the putter with Doctor Scholl’s foot spray. It will show you where the ball is making contact with the face, and has minimal effect on ball speed and friction.

Certainly there are other parameters to consider, but this article should provide golfers with a general concept that they may not have considered in the past. Without knowing what the ball is doing, it is very difficult to teach someone proper putting mechanics. Players who have a better understanding of how the ball is rolling have a better chance of improving their game on the greens. Therefore, go get fit for a putter and KNOW YOUR ROLL.

Call or email to book your appointment today at Modern Golf.


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Modern Golf was founded in 2011 and has established a reputation as Canada’s Premier golf club-fitting experience. With a brand agnostic approach to club-fitting, a 13,000 square foot state-of-the-art headquarters including a PGA Tour caliber workshop, Modern Golf can provide a demonstrable improvement to your golf game. Regardless of our customers’ age, gender, or skill level, our highly trained club-fitters and experienced club builders can custom tailor our customers’ golf equipment to produce improved on-course results. The Modern Golf team is excited to share their expertise with the GolfWRX Community.

1 Comment

1 Comment

  1. Scooter McGavin

    Feb 27, 2015 at 11:20 am

    There is some good info on this article. I also agree that people can tend to overlook putter roll. I’d be curious for a little more info that goes into greater depth about its role in the fitting process with respect to different models’ grooves, inserts, centers of gravity, etc. and how it would directly affect one’s putter choice. Cheers!

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On Spec

On Spec: Talking fitting with Marty Jertson – VP Fitting & Performance at Ping Golf



This week, host Ryan Barath had the opportunity to speak with Marty Jerston, VP of Fitting and Performance at Ping about all things club fitting. Topics range from the increasing popularity of virtual fittings to what optimization really means for every golfer.

The conversation also covers the new Stack System—a training program developed by Dr. Sasho MacKenzie and Marty to help golfers train for speed and improve performance.


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Club Junkie

Club Junkie: The softest forged irons you’ve never heard of and the Cobra RadSpeed hybrid!



Ever heard of New Level Golf? If you are looking for wildly soft players irons, then you should check them out. The PF-1 blades and the PF-2 cavity backs are as soft as anything on the market right now. Great irons for skilled players.

The Cobra RadSpeed hybrid is a solid mid/high launching hybrid with a solid Cobra feel and sound. Pretty neutral-bias ball flight with only a slight draw.

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Opinion & Analysis

The future of club fitting is going virtual



Thanks to technology, you can buy everything from custom-made suits to orthotics online without ever walking into a store or working in person with an expert.

Now, with the help of video and launch monitors, along with a deeper understanding of dynamics than ever before, club fitting is quickly going virtual too, and it’s helping golfers find better equipment faster!

What really took so long?

The real advancements started in the coaching world around a decade ago. What used to require heavy cameras and tripods now simply requires a phone and you have a high-definition slow-motion video that can be sent around the world in a matter of seconds.

Beyond video, modern launch monitors and their ability to capture data have quickly turned a guessing game of “maybe this will work” into a precision step-by-step process of elimination to optimize. When you combine video and launch monitor elements with an understanding of club fitting principles and basic biomechanics, you have the ability to quickly evaluate a golfer’s equipment and make recommendations to help them play better golf.

The benefits of virtual fitting

  • Any golfer with a phone and access to a launch monitor can get high-level recommendations from a qualified fitter.
  • Time and cost-saving to and from a fitter. (This seems obvious, but one of the reasons I personally receive so many questions about club fitting is because those reaching out don’t have access to fitting facilities within a reasonable drive)
  • It’s an opportunity to get a better understanding our your equipment from an expert.

How virtual fittings really work

The key element of a virtual fitting is the deep understanding of the available products to the consumer. On an OEM level, line segmentation makes this fairly straightforward, but it becomes slightly more difficult for brand-agnostic fitters that have so many brands to work with, but it also shows their depth of knowledge and experience.

It’s from this depth of knowledge and through an interview that a fitter can help analyze strengths and weaknesses in a player’s game and use their current clubs as a starting point for building a new set—then the video and launch monitor data comes in.

But it can quickly go very high level…

One of the fastest emerging advancements in this whole process is personalized round tracking data from companies like Arccos, which gives golfers the ability to look at their data without personal bias. This allows the golfer along with any member of their “team” to get an honest assessment of where improvements can be found. The reason this is so helpful is that golfers of all skill levels often have a difficult time being critical about their own games or don’t even really understand where they are losing shots.

It’s like having a club-fitter or coach follow you around for 10 rounds of golf or more—what was once only something available to the super-elite is now sitting in your pocket. All of this comes together and boom, you have recommendations for your new clubs.

Current limitations

We can’t talk about all the benefits without pointing out some of the potential limitations of virtual club fittings, the biggest being the human element that is almost impossible to replicate by phone or through video chat.

The other key factor is how a player interprets feel, and when speaking with an experienced fitter recently while conducting a “trial fitting” the biggest discussion point was how to communicate with golfers about what they feel in their current clubs. Video and data can help draw some quick conclusions but what a player perceives is still important and this is where the conversation and interview process is vital.

Who is offering virtual club fittings?

There are a lot of companies offering virtual fittings or fitting consultations over the phone. One of the biggest programs is from Ping and their Tele-Fitting process, but other companies like TaylorMade and PXG also have this service available to golfers looking for new equipment.

Smaller direct-to-consumer brands like New level, Sub 70, and Haywood Golf have offered these services since their inception as a way to work with consumers who had limited experience with their products but wanted to opportunity to get the most out of their gear and their growth has proven this model to work.

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