Every golfer understands the frustration of an inconsistent swing. One day, you might be striping it down the middle; the next, you’re battling a relentless slice or a stubborn pull. Often, when golfers analyze their swing, they tend to focus heavily on the downswing, trying to “fix” what happens just before impact. However, as many seasoned instructors will attest, the root of many downswing issues—particularly a steep descent that causes an ‘over-the-top’ move—can frequently be traced back to a fundamental flaw in the backswing.
In the accompanying video, instructor Eric sheds light on a powerful, yet often overlooked, principle that can profoundly improve your golf backswing. This isn’t about minor tweaks; it’s about understanding a core mechanism that dictates your club’s path and sets the stage for a much more effective downswing. If you’ve ever struggled with a backswing that feels “too flat” or leads to a steep, problematic downswing, this comprehensive guide will unpack the essential “trick” to achieve a more on-plane, vertical backswing for lasting improvement.
Understanding the Common Backswing Problem: Too Flat
Before diving into the solution, it is crucial to fully grasp the problem that plagues a significant portion of amateur golfers. During the backswing, a common flaw observed in an estimated 60-70% of swings is the club shaft getting “too flat” or excessively horizontal. This typically manifests in two main ways: either the hands move out and the club head moves in during the takeaway, or even if the initial takeaway is decent, the shaft quickly drops below the ideal plane as the backswing continues.
A backswing that becomes too flat creates an immediate domino effect on the rest of your golf swing. When the club gets too far behind your body or too horizontal, your body instinctively tries to find a way to get it back to the ball. Almost without exception, this compensation leads to a steep downswing, forcing the club to come “over the top.” This results in a loss of power, inconsistent contact, and often produces slices or pulls, severely impacting your ability to control the golf ball effectively.
The Critical Role of Backswing Plane
What constitutes a “good” backswing plane? Essentially, a solid backswing keeps the club on a path that is aligned with your body’s rotation and the target line, preparing it for an efficient transition into the downswing. Good players often maintain the shaft on plane throughout their backswing, or they lean towards a slightly more vertical shaft position. This verticality isn’t about lifting the club straight up, but rather ensuring the club head stays “in front” of the body more effectively, preventing it from dropping too far inside or behind.
Achieving a more vertical backswing is a primary objective for those looking to eradicate a flat swing and its accompanying steep downswing. By maintaining the club on a proper plane, or even slightly vertical, during the backswing, you naturally create a more advantageous position for the downswing. This proper positioning makes it far easier to shallow the club automatically during transition, leading to a much more efficient and powerful path into the golf ball.
The One Simple Trick: Left Arm Rotation
The core secret to fixing your backswing and achieving a more vertical, on-plane position lies almost entirely in how your left arm works. Specifically, the rotation of your left elbow and the upper arm (from shoulder to elbow) is the single most critical factor determining whether your club shaft stays on plane, becomes too horizontal, or leans towards a desirable vertical orientation. This often overlooked aspect of arm movement is the key that unlocks a consistently better backswing.
Most golfers understand forearm rotation—the twisting movement from the elbow to the wrist that allows your thumb to point in different directions. While forearm rotation certainly plays a part in the club’s path, it’s not the entire story. The trick that often goes undiscussed is the rotation of the upper arm, or what can be termed “shoulder rotation” in a practical context. This specific movement controls the orientation of your entire arm relative to your body and, consequently, the club’s plane.
Deconstructing Arm Rotation: Forearm vs. Upper Arm
To fully appreciate this concept, let’s differentiate the two types of arm rotation. Imagine holding your left arm straight out in front of you with your thumb pointing upwards:
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Forearm Rotation: This is the movement where your hand twists relative to your elbow. You can rotate your thumb about 90 degrees towards the target (supination) or 90 degrees away from the target (pronation) without significant movement of your elbow itself. This rotation influences how the clubface opens and closes but has a more limited impact on the overall shaft plane.
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Upper Arm/Shoulder Rotation: Beyond the forearm’s rotational limits, to get your thumb pointing further towards the ground or sky, your entire upper arm must rotate at the shoulder joint. This involves the elbow moving in space—for instance, if your thumb goes towards the ground, your elbow will point upwards. This upper arm rotation is what significantly influences where your elbow points and, subsequently, the plane of the golf shaft.
The insight here is that the direction your left elbow points throughout your backswing, starting from your address position, is predominantly controlled by this upper arm rotation. A proper rotation of the upper arm encourages the elbow to point in a way that keeps the club on a superior plane, setting up a much better path for the downswing.
Setting Up for Success: Address Position and Elbow Tuck
The journey to a better backswing begins before you even start the club moving: at your address position. The way you set up your left arm will predetermine much of its motion during the backswing. Many golfers unknowingly set up with their left elbow pointing too much towards the target or too far away from their body. This pre-rotates the upper arm internally, essentially pre-setting the club to go too horizontal or flat on the way back.
The key adjustment is to ensure your left arm is “tucked under” or “externally rotated” at address. This means your left elbow should point more towards your left hip or even slightly inward towards your body. To achieve this, take your grip by rotating your hand from this tucked-under position. This subtle setup adjustment positions your left arm in a way that naturally encourages a more vertical and on-plane backswing. It might feel a little different or even create a slight stretch in your shoulder initially, but this feeling is exactly what you want.
Maintaining the Elbow Position Through the Backswing
Once you’ve established the correct “tucked under” position at address, the next step is to maintain this orientation as you initiate your backswing. As you take the club away, actively feel your left elbow staying pointed towards your body, and then as you continue the backswing, direct it down towards the ground. This sensation of the elbow staying “in” and “down” is crucial.
When your elbow stays tucked and points towards the ground, the club head will naturally hinge more in front of you. Conversely, if your elbow drifts away from your body or points too much towards the target during the takeaway, the club will roll underneath, immediately getting too flat. This controlled movement of the left elbow, guided by upper arm rotation, dictates the verticality of your shaft. Keeping it pointed down encourages a beautifully vertical club path, positioning the club ideally for the transition.
The Downswing Advantage: Automatic Shallowing
The beauty of fixing your backswing with this left arm trick extends directly into your downswing. By keeping your shaft more vertical on the way back, you inherently create the space and angles needed for a natural and effortless shallowing motion in transition. When the club is in a good, vertical position at the top, it wants to drop into the slot, coming from the inside with the clubhead approaching the ball on a shallower, more powerful plane.
Think of it as cause and effect: a properly positioned left arm leads to an on-plane or vertical backswing, which then almost automatically leads to a shallow downswing. This eliminates the need for drastic, conscious efforts to shallow the club, making your overall golf swing more fluid and consistent. If you consistently go back with your elbow flaring out and your club getting flat, your downswing will almost always be steep, forcing compensations and leading to frustrating results.
Practical Application for Lasting Change
To integrate this “one simple trick” into your golf swing, consider these practical steps:
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Address Check: At setup, consciously tuck your left arm under so your elbow points towards your left hip or belly button. Then, rotate your hand to take your grip, maintaining that elbow orientation.
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Takeaway Focus: As you start your backswing, feel your left elbow staying “in” towards your body and pointing down towards the ground. Resist the urge to let it float out or point towards the target.
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Backswing Verticality: Continue this feeling as you reach the top of your backswing. Your elbow should feel like it’s still pointing down towards the ground, ensuring the club shaft remains on a vertical plane. You should feel the club hinging in front of you.
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Drill Work: Practice this motion slowly, perhaps even holding just your left arm and the club, or mirroring yourself in a slow-motion drill. Focus on the feeling of your elbow’s direction rather than just the clubhead’s path. This intentional practice will help you build muscle memory for the correct upper arm rotation.
By focusing on this specific left arm rotation, you’re not just fixing a superficial swing flaw; you’re addressing a fundamental cause of inconsistency in your golf swing. This deep understanding of how your upper arm dictates your backswing plane can finally help you fix your backswing for good, leading to more consistent strikes, increased power, and lower scores on the course.
Addressing Your Backswing Queries
What is a common problem golfers have with their backswing?
Many golfers have a backswing that is “too flat,” meaning the club shaft gets too horizontal or behind their body.
Why is a flat backswing a problem?
A flat backswing often causes the club to come “over the top” during the downswing, leading to inconsistent shots like slices or pulls.
What is the simple trick to fix a flat backswing?
The trick is to focus on the rotation of your left upper arm and the direction your left elbow points throughout your backswing.
How should I position my left arm at the start of my swing (address position)?
At address, your left arm should be “tucked under,” with your left elbow pointing towards your left hip or slightly inward towards your body.
How does a better backswing help my downswing?
A more vertical backswing naturally helps the club “shallow out” on the downswing, making your swing more efficient and consistent without extra effort.
