Sunday, July 8, 2018

Putting, Part IV: Harvey Penick was right…

Scrolling through my Twitter feed the other evening, I came across a tweet from the British golf magazine National Club Golfer (@NCGMagazine) with a video featuring golf coach Gary Nicol (@GaryNicol67) explaining how in putting pace determines line, and gives you options for how to deliver the ball to the hole.
Now, I have insisted in the past that pace and line are of equal importance, because they are co-dependent. There are multiple combinations of line and pace that will get the ball to the hole – a higher line requires a faster-moving ball (more pace), and a lower line requires a slower-moving ball (less pace) – but a change in one always requires a commensurate change in the other to get the same result.
But that’s where I was wrong – in thinking about “…the same result”  – because as I watched the video clip I realized that while my assertion is accurate, it is only true in a limited-case scenario; pace and line are of equal importance and precisely co-dependent only for getting the ball to the same position at the hole – like in the illustration below:
Slower pace (in blue) requires a higher line; faster pace (red) requires a lower line. Pace & line are directly related, and of equal importance – if you want to get the ball to the same target on the cup.

As Gary Nicol explained in the video clip, there is a usable target width at the hole that is essentially three balls wide, as shown in the next illustration. Recognizing this fact, you can give yourself a wider target line to aim at, essentially the full area shaded in green, instead of thinking that you have to hit a narrow, very specific line at just the precise speed. Keep reading and I’ll explain how this opens up your possibilities for making more putts.
The size differential between the hole and the ball allows a target area that is about three balls wide, giving the golfer a wider selection of line than they might think at first. Higher line still takes a slower pace, but learning to recognize the wider target area will help you make more putts.

Why pace rules in putting
I touched on this concept, a bit, in my June 23rd post, Putting is hard – but you already knew that, right?, in which I wrote:
“…(T)here is a minimum ball speed that will get the ball to the hole, and a range beyond the minimum within which the ball will go into the hole and not bounce or lip out.
To further complicate matters, this speed varies depending upon how close to center the ball is when it gets to the hole. A ball traveling at a speed which allows it to fall into the hole on a dead-center hit may lip out if it arrives at the hole off-center. The more off-center, the slower the ball must be moving when it encounters the edge of the hole.”
Right there you have the basis for pace having the edge over line in importance: There is a minimum ball speed which will get the ball to the hole (“Never up, never in” as the old saying goes) – and if the ball comes up short, it doesn’t matter if it was on the right line.
The real argument for stressing pace over line is right there in the second paragraph from my June 23 post: it is the fact that, on a given line, pace also determines whether the ball will actually drop once it gets to the hole. Even if the ball hits the hole dead-center, it can hop out if it is moving fast enough (≈ 5 feet per second or faster, by my calculations); that max-allowable pace drops off dramatically as the ball’s interception point with the edge of the hole moves off center and the dreaded “lip-out” comes into play.
So, from the minimum speed that gets the ball to the hole, to the maximum speed at which it will actually drop into the hole and stay, there is a range of speeds which you must keep the ball within if you want to make that putt. And for every speed increment within that range, there is a target window within which the ball will actually drop – and if you haven’t figured it out by now, the slower the ball is moving when it gets to the lip of the hole, the bigger that target window is.
Wait, there’s more…
I started looking at the dynamics of the interaction between a moving golf ball and the rim of the hole – as in how to avoid the dreaded lip-out – and I started getting dizzy before I had even finished listing all the variables, so let’s just go with the broad concepts, without getting mired down in the math: A ball that skims the edge of the hole, with the center of the ball just inside the apex of the rim, has to be moving pretty slowly to drop into the hole – but at that low speed it will drop into the hole from any point at which the center of the ball is inside the diameter of the hole. In other words, at the minimum speed that gets the ball to the hole, the target window is pretty much the full diameter of the hole – 4-1/4 inches.
Conversely, the faster the ball is going the narrower the window gets. A faster-moving ball’s greater momentum increases the likelihood of the ball lipping out or just plain skimming over the edge of the cup, because it passes over the free space beneath it before it has had time to fall the distance required to let it drop.
Bottom line: the slower the ball is going, the more options there are for the line that will allow the ball to drop – which means that pace rules over line when it comes to making putts.
Harvey was right
There is one caveat to this discussion. Since the putting green is a highly variable surface, with grain, and bumps, and small irregularities – not to mention the dimpled surface of the ball itself – the ball tends to wander and not hold its line if it is moving too slowly. 
“I like to see a putt slip into the hole like a mouse.”
  – Harvey Penick
This factor dictates a minimum speed – which puts me in mind of the putting maxim of Harvey Penick, the revered Austin, Texas golf pro who taught such greats as Tom Kite, and Ben Crenshaw, who was one of the greatest putters the game has ever seen. Harvey said, “I like to see a putt slip into the hole like a mouse.” Harvey knew what he was talking about.
There is another putting maxim which defines a reasonable upper threshold for ball speed on the green: Get the ball to the hole at such a speed that it will roll no more than 18 inches past the hole if it misses. There are two reasons why this is good advice: 1) that 18-inches-past speed is not so high that you will have squeezed yourself into a narrow target window; and 2) if you do miss the putt, you have a short comebacker.
Speed rules
So there you have it. Pace dictates line, and the lowest speed that gets the ball to the hole on a steady course gives you the best chance of making the putt. Practice hitting your putts with consistent speed, and when you are warming up on the practice green before a round, do some distance drills and get a feel for the speed of the greens you’re going to be playing on. It will pay dividends on the course that will show up on your scorecard.

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