When most golfers look at the players in this image, they see iconic eras of golf, legendary ball strikers, players who excelled at virtually every aspect of the game.
These certainly are some of the greatest players in golf history: Bobby Jones, Ben Hogan, Jack Nicklaus, Greg Norman, and Tiger Woods. But beyond five exceptional ball strikers, we can also identify five distinct eras of golf instruction and a gradually more scientific approach to improving the golf swing.
The Fashion of the Day
A golf instructor might study Bobby Jones' golf swing and then consider what changed when Ben Hogan emerged on the scene.
Hogan published his landmark book and suddenly every golfer wanted to copy his swing. He was the premier ball striker of his era, so everyone tried to replicate his technique — a much more rotational, inside path with a slightly flatter swing plane.
Then eventually another superstar arrived and transformed golf instruction overnight. Jack Nicklaus appeared, and Hogan's method was no longer in fashion. Now everyone wanted to swing like Nicklaus — more upright, arms elevated high above the head, with a pronounced lateral leg drive through impact.
An entire generation of golfers, including Johnny Miller and others, adopted Jack's big lateral leg drive. Unfortunately, many of them did significant damage to their hips over time — most eventually required hip replacement surgery.
When Greg Norman emerged, his swing was more compact and slightly more rotational, with shallower arms at the top. Once again, the instruction world shifted to match.
Then more recently, when Tiger came out, everyone studied his swing mechanics and concluded, "Well, this must be the way to swing the golf club. He's phenomenal, he's the best player we've ever seen, we need to emulate his technique."
Consider this pattern. We've examined a span of less than 100 years of golf, and golf instruction has simply migrated from one star to the next, following them like a lost puppy. Is there no science of golf?
Where's the Science in Golf?
Nobody investigated the facts, the fundamentals, the science, the absolutes of how the golf club should be swung, how the body should move, and what constitutes efficient motion. Golf instructors have historically based their teaching on star players — copying the top ball strikers in the professional ranks, as well as their own colleagues' methods and techniques that worked in their personal golf swing.
Looking at it objectively, that approach is somewhat irrational. It's essentially following a fad.
The golf instruction world has been the absolute king of infomercials and trends. New golf swing theories appear and vanish constantly because nobody has ever taken a truly objective look at the golf swing and declared, "Here's how the body is designed to move. Here's how the joints are designed to be aligned for safety, for power, for efficiency, for stability. These are the specific muscles you use to create these movements."
When you examine the science of golf through this lens, the answers are remarkably black and white.
The Rotary Swing is Different - Golf Science
That's where the Rotary Swing stands apart from conventional instruction. Most golf instructors have limited understanding of anatomy and kinesiology, so their teaching is based on personal preferences, what has worked for them individually, and whichever top player of that era they admire most.
Some golf instructors are devoted fans of Ernie Els and believe everybody should swing like Ernie. But the critical question is: is Ernie swinging correctly? Is his golf swing fundamentally sound from a biomechanical perspective? Is he moving based on how the body is designed to function, or is he at risk for injury? Is he moving inefficiently? How does his swing hold up when viewed scientifically and objectively?
These types of analytical questions are the key to genuine understanding. You can't simply copy a top player's technique and expect success. It doesn't work that way.
The underlying laws of anatomy are black and white. The way your body is designed to move is black and white. The specific muscles you use to create rotation around your spine are black and white. You don't have some alternative set of muscles to fall back on for this purpose.
It is critical, then, for golfers to understand the need to evaluate the swing objectively, because there is so much misinformation in the instruction world — and there's no justification for it. There are straightforward, factual answers to the anatomy of the golf swing, and that's exactly what we're here to discuss — simple golf science. For a data-driven look at how your own swing mechanics measure up against elite standards, try a free AI swing analysis.
Too Many Tips, Not Enough Science in Golf
At some point, most golfers and golf instructors grow frustrated by the endless stream of conflicting "tips." They become exhausted by random swing advice thrown at them by instructors, golf magazines, online videos, and social media. They have no reliable method to distinguish what's correct from what's harmful.
And of course there is a right and wrong — but how do you determine which is which? If one golf instructor says you should move the golf club one way and another instructor insists on the opposite, how do you decide who is correct?
Look at the Fundamentals
Logically, that determination should be based on the fundamental truths of how the body is designed to move.
With so many conflicting perspectives available, most golfers end up with a disorganized collection of random swing tips from disparate sources. Trying to discuss swing fundamentals often devolves into circular arguments that leave golfers more confused than before.
Unfortunately, this chaos also creates a rift within the golf instruction industry. Lines are drawn, and you're forced to choose between one swing theory or another. Nobody wins, because nobody has established a set of fundamentals governing how golfers should move that's based on facts, medical science of golf and anatomy, rather than personal preference.
Most golfers pick a camp and declare, "I am this type of golfer," or "I believe in this type of golf swing," and practice that approach without any factual basis or diagnostic tools to determine whether it's truly the best way to swing — or whether it could cause physical injury over time.
Hazardous to Your Health
The possibility of golf swing injury is a very real concern. Over 80 percent of the players on the PGA Tour will miss six to eight weeks during their careers due to a golf swing-related injury.
Consider that statistic. Four out of every five players you watch on television each week will miss roughly two months of competitive play — their livelihood — because of a golf swing-related injury.
Their golf swings are far more efficient than the average amateur's, so at some point the instruction world needs to recognize that there has to be a right way and a wrong way. The old approach of guessing and copying clearly isn't working.
That's precisely what the Rotary Swing set out to solve. We examined the swing objectively and said, "All these elite players are getting hurt. There has to be a reason, and there has to be a way to prevent it." And of course there is. It comes down to understanding basic anatomy, biomechanics, how the body is designed to move, and how the brain learns new movement patterns. Hence, the Rotary Swing Tour was born from a desire to explore the science of golf swing mechanics. To see how your own mechanics score against science-based benchmarks, check out a free AI golf lesson that evaluates your form in real time.
The Final Piece
The biological process of learning is the other essential piece of the puzzle. When you get a typical golf lesson, you're given a tip or two, and then left on your own to determine what that tip actually means to you. You're left to form your own interpretation.
Imagine a golf instructor tells you, "For your takeaway, I want you to turn your shoulders."
OK — but how exactly? How do I turn my shoulders? Do you want me to push from the lead side? Do you want me to pull from the trail side? Do you want me to use my obliques? Do you want me to use the old cliché of, "Put your lead shoulder under your chin?" How, precisely, should I initiate the movement?
In 100 different lessons, you could end up with 100 different interpretations of what it feels like to "turn your shoulders."
That ambiguity creates even more problems, because students are interpreting instructions to the best of their ability — and even if the information is sound (which often it isn't), some interpretations may lead to harmful movement patterns. Shoulder impingements happen. Back injuries happen. Other golf-related injuries result from well-intentioned but vague instruction.
The brain learns in a very specific way, and you need to be extremely explicit when telling the brain precisely what you're asking it to do.
Do It Right to Learn It Right
For instance, when we want golfers to create rotation during the takeaway, we get very specific about how the shoulder blade moves and how the oblique muscles engage — because those are the only muscles designed to rotate your torso around the spine.
If you're going to play golf effectively, you need to understand what those muscles feel like so you know how to engage them properly. Our science-based golf instruction is deliberately specific, leaving no gray area that could be misinterpreted and executed incorrectly.
The brain doesn't know right or wrong. It simply learns the movement patterns that you repeat. The more you repeat a movement, the more efficiently your brain reproduces that exact pattern — so you need to be certain you're teaching it the correct motions from the start.
If your golf instructor tells you simply to "turn your shoulders" and you interpret that to mean push when in fact you need to pull, you're going to develop an inefficient golf swing — and potentially an injury as well.
There are fundamentals and science of the golf swing that are absolute, and that's what the Rotary Swing is built upon.
Watch part 2 now to see how you're moving your body in the opposite direction of the pros!
Great Eras of Golf
