Intermediate

Sway

Also known as: swaying off the ball, lateral slide (backswing)

Definition

A sway is a sideways slide of the hips and upper body away from the target during the backswing. It replaces rotation with sideways movement, which makes a consistent return to the ball difficult.

A sway occurs when the hips and torso move laterally away from the target during the backswing rather than rotating around a relatively stable base. Visually, the golfer's trail hip slides backward (away from the target) instead of turning behind them. The entire body appears to shift sideways rather than coil. A moderate amount of lateral movement is normal and even necessary in a full backswing. But a sway becomes a fault when sideways slide substitutes for rotation rather than accompanying it. The telltale sign is a trail hip that moves back without turning.

After a sway, the golfer has to move the body an equal distance back toward the target during the downswing. That only gets them back to neutral, before any actual rotation toward impact can happen. This adds timing complexity and makes the swing's low point far less consistent from rep to rep. Small variations in how far the body slides back, and how fully it returns, directly change where the club bottoms out relative to the ball.

A sway is often confused with a proper weight shift, since both involve some sideways motion. The distinguishing feature is rotation. A good backswing turns the hips and shoulders around a stable trail leg while allowing a modest, controlled amount of lateral pressure shift. A sway substitutes sliding for that rotation. Drills with a wall or alignment stick just outside the trail hip at address are a common and effective way to feel the difference. The goal is for the hip to stay near that reference point rather than slide into it.

Example

A golfer's trail hip visibly slides several inches away from the target during the backswing without any accompanying rotation. As a result, the entire lower body has moved sideways rather than turned — a classic sway.

Why it matters

A sway trades rotational coil, which stores power efficiently, for lateral movement. The golfer must then reverse that movement just to get back to neutral. The result is less power and a less consistent low point. Motion Lab estimates hip slide and hip turn together from face-on video. That helps tell a sway from a normal, controlled weight shift.

How it shows up on video

From a face-on angle, a sway is visible as the trail hip and pelvis moving noticeably sideways (away from the target) with little accompanying rotation. The hip line stays roughly parallel to its address position rather than turning. A properly loaded backswing shows the trail hip turning behind the golfer while staying closer to its original position.

Common mistakes

Confusing a sway with a healthy weight shift. Some lateral pressure shift into the trail side is normal. The fault is sliding without rotating, not lateral movement itself.
Trying to eliminate all lateral movement to fix a sway — over-restricting hip movement can create tension and reduce power just as much as swaying does. The goal is coordinated rotation with controlled weight shift, not a completely stationary lower body.
Not using a physical reference (wall, alignment stick, or chair) to feel the difference between sliding and turning — sway is often hard to feel without an external check because it happens gradually and the golfer's internal sense of "turning" can be inaccurate.

In SwingVantage Motion Lab

Motion Lab estimates how far your hips travel side to side, and how much of that travel is turning rather than sliding. A sway shows up as a lot of slide with little turn. It also estimates head drift from setup to the top. None of this is ground pressure. Film face-on, phone near chest height, with your whole body in frame.