Eliminate Sway in Your Backswing with This Wedge Drill

If you tend to slide off the ball in the backswing, this drill gives you a simple way to retrain how your trail foot interacts with the ground. A sway happens when your pelvis shifts too far into the trail side and pressure moves toward the outside of that foot. Once that happens, your backswing loses structure, your transition gets harder to time, and solid contact becomes less reliable. This wedge drill teaches you to keep pressure on the inside of the trail foot so you can turn without drifting.

How the Drill Works

The idea is simple: place a small wedge under the inside edge of your trail foot to encourage the correct pressure pattern in the backswing. You do not need any special training aid. A half foam noodle, a door stop, or even an object that creates roughly 1 to 1.5 inches of lift can work.

The key is where you place it. Many golfers put the lift under the outside of the foot to stop the body from swaying. While that can reduce motion, it often teaches the wrong ground interaction. With the outside elevated, you may end up learning to push against the outside of the foot, which is exactly the pressure pattern you are trying to avoid.

Instead, place the wedge under the inside of the trail foot, with the slope pointing outward. This setup makes it easier to sense when pressure stays centered to inside, and much less comfortable to roll toward the outside edge. As you turn back, you should feel the inside of the foot stay engaged with the ground rather than the ankle rolling outward.

This matters because a good backswing is not just about where your body goes. It is also about how you use the ground. If you learn to load the trail side through the inside of the foot, you can turn your pelvis and torso without letting them slide too far away from the target.

Step-by-Step

Choose your wedge. Use a half foam noodle, door stop, or another small object that creates a slight lift. You only need enough height to make the pressure change noticeable.
Place it under the inside of your trail foot. If you are a right-handed golfer, that means under the inside of your right foot. The wedge should angle outward, lifting the arch side slightly.
Set up in your normal stance. Take your golf posture as usual. You do not need to exaggerate anything at address.
Make slow practice backswings. Turn to the top without hitting a ball. Your goal is to keep pressure feeling connected to the inside of the trail foot as your body turns.
Compress the wedge gently. As you move back, feel the inside of the foot press into the ground. The wedge should give you feedback that the foot is staying engaged rather than rolling outward.
Notice what happens if you sway. If your pelvis shifts too far into the trail side and pressure runs to the outside of the foot, the movement will feel awkward and unstable.
Repeat until the pressure pattern becomes familiar. Then remove the wedge and make the same backswing, trying to keep the exact same trail-foot pressure feel.

What You Should Feel

The main sensation is that your trail side is loaded without rolling. You are not trying to keep all your weight perfectly centered. You are still turning into your trail side, but the pressure should stay more toward the inside of the foot rather than spilling over the outside edge.

Key checkpoints

Pressure in the inside of the trail foot, especially through the arch and inner heel area
A turning backswing instead of a lateral slide of the pelvis
A stable trail leg and ankle rather than the foot rolling outward
Better balance at the top, with less feeling of falling onto the trail side

You may also feel that your trail ankle has a little more inward support as you turn. That is a good sign. The drill should help you sense how to push into the ground with the inside of the foot, which gives your backswing more structure.

When you remove the wedge, try to preserve that same pressure trace. The drill is not about becoming dependent on the prop. It is about teaching your body where the pressure should go during the backswing.

Common Mistakes to Avoid

Putting the wedge under the outside of the trail foot. That may reduce sway, but it can teach the wrong push pattern.
Hitting balls with the wedge in place. This drill is best for rehearsals and practice swings. Keeping the wedge under the foot during full shots can interfere with natural downswing foot action.
Trying to freeze the lower body. You still want a backswing turn. The goal is to eliminate the slide, not all motion.
Shoving pressure aggressively into the foot. The feel should be firm and controlled, not forced.
Ignoring the pelvis. The foot pressure is there to help control pelvic motion. If your hips still drift excessively, slow down and rehearse smaller backswings.
Assuming centered means no trail-side load. You should still load into the trail side—just through the inside of the foot, not the outside edge.

How This Fits Your Swing

This drill addresses one of the most common backswing faults: too much lateral motion into the trail side. When your pelvis sways, you often create a backswing that is harder to sequence on the way down. The transition becomes more timing-dependent because you first have to recover from the slide before you can rotate and deliver the club consistently.

By cleaning up the pressure pattern in the trail foot, you improve the foundation of your backswing. That usually leads to a more centered turn, a more predictable transition, and better contact. In other words, this is not just a foot drill. It is a way to improve the motion of your entire swing from the ground up.

Use it as a rehearsal tool. Make slow backswings, learn the feel of staying on the inside of the trail foot, then step away and repeat the same motion normally. If you can keep that pressure organized, you will have a much better chance of turning properly instead of swaying—and your strike and timing should improve as a result.