The one-handed drill is one of the most revealing exercises in golf — a simple way to expose exactly what each arm is doing in your swing. By hitting shots with a single hand on the club, you quickly discover whether you are casting, flipping, or losing control of the clubface. This guide explains how the lead-hand and trail-hand versions work, what each one fixes, and how to add the drill to your practice without ingraining new faults.
What Is the One-Handed Drill?
The one-handed drill involves making swings and hitting short shots with only one hand gripping the club, rather than the usual two. There are two variations: the lead-hand-only drill (the left hand for a right-handed golfer) and the trail-hand-only drill (the right hand for a right-handed golfer). Each isolates one side of the swing so you can feel its specific job.
Because you cannot rely on your dominant hand or brute force to muscle the club through impact, the drill forces efficient, sequenced movement. Weak, mistimed, or overly handsy motions fall apart immediately — which is exactly why it is such an effective diagnostic and training tool used by coaches at every level.
Why the One-Handed Drill Works
Golf is a two-sided action, but most amateurs let one hand dominate and overwhelm the other. When your trail hand takes over too early, you tend to cast the club, throwing away angles and adding loft at impact. When your lead hand is passive, the clubface flips and control disappears. The one-handed drill removes the crutch of the second hand so each side has to do its own work.
It also builds two qualities that are hard to train any other way: control of the clubface and proper sequencing. With one hand, the only way to deliver the club squarely is to rotate the body, keep the arm connected to the turn, and let the club release naturally rather than force it. Those are the same fundamentals that produce solid, repeatable contact with both hands on the club.
Finally, the drill exposes casting instantly. If you release the angle between your lead arm and the club shaft too early, a one-handed swing simply cannot deliver the clubhead with any speed or control. Learning to hold and release that angle correctly is central to solid ball striking, and our guide on how to stop casting the golf club pairs perfectly with this drill.
The Lead-Hand-Only Drill
The lead-hand drill trains the top half of the swing to control the face and resist flipping through impact. It is the more difficult of the two, so start small.
- Choke down on a short iron. Grip a 7- or 8-iron with only your lead hand, gripping an inch or two down the handle for control.
- Tee a ball up low and set up with a narrow stance and your feet close together to help balance.
- Make half-swings first. Swing the club back to about waist height and through to waist height, keeping the lead arm connected to your chest rotation.
- Turn, do not lift. Feel your body rotation carrying the arm and club, rather than your hand lifting or scooping.
- Hold the finish. Rotate through to a balanced finish with the lead arm firm — no chicken-wing collapse or wrist flip.
- Progress gradually. Once you can strike clean waist-to-waist shots, lengthen the swing slightly and add a touch of speed.
If your lead arm tends to bend and collapse just after impact, this drill is a direct antidote. Read our breakdown of how to fix the chicken wing to understand the fault this drill is training out.
The Trail-Hand-Only Drill
The trail-hand drill trains the feeling of release and the delivery of speed at the bottom of the swing. Most golfers find it easier and more intuitive than the lead-hand version because the trail hand is usually the dominant one.
- Choke down on a short iron and grip it with only your trail hand.
- Set up narrow and balanced, with a low-teed ball to encourage clean contact.
- Swing to waist height and back through, feeling the club release and the clubhead pass your hand through impact.
- Let the arm stay soft. The trail arm should fold on the backswing and extend through impact, not stiffen or steer.
- Feel the “throw” without casting. Sense the release happening late, near the ball, rather than from the top.
- Finish in balance, with the club wrapping around and your body rotated to face the target.
This variation is excellent for feeling how the club should release through impact without manipulation. When you rejoin both hands, aim to keep that same free, sequenced release.
How to Add the Drill to Your Practice
The one-handed drill is potent but demanding, so use it in small, focused doses rather than as a full range session. A simple structure keeps it productive:
- Warm up first. Hit a few normal two-handed wedges before going one-handed, so your body is loose.
- Alternate hands. Do five lead-hand shots, then five trail-hand shots, then a set of normal two-handed shots to blend the feels together.
- Keep it short. Ten to fifteen minutes is plenty. Fatigue quickly degrades technique in a one-handed swing.
- Use it as a check-in. Return to the drill whenever your contact turns thin, fat, or inconsistent — it will usually reveal which hand is misbehaving.
This drill also complements other feel-based exercises. If you enjoy diagnostic training, it slots neatly alongside the gate drill for centered strikes and the routines in our roundup of short game drills.
Faults the One-Handed Drill Fixes
Casting and early release
Because a cast swing bleeds away speed and angle from the top, a one-handed swing that casts produces almost no clubhead speed. The drill teaches you to preserve the wrist angle and release it later, closer to the ball, where it counts.
Flipping and clubface control
Flipping the hands at impact adds loft and closes the face unpredictably. The lead-hand drill in particular trains the hand and wrist to stay stable and rotate rather than flip, delivering a more consistent face angle.
Disconnection from the body
If your arms swing independently of your torso, contact becomes erratic. With only one hand on the club, the arm must stay connected to the chest and move with your rotation, reinforcing the connected, body-driven motion that produces reliable strikes.
Over-controlling and steering
Many golfers steer the club with tension, killing speed and rhythm. Swinging one-handed makes steering nearly impossible; you learn to let the club swing and release freely.
Common Mistakes to Avoid
The drill only helps if you do it well. Watch for these errors:
- Starting too long or too fast. Full one-handed swings with a driver invite injury and reinforce bad habits. Begin with short irons and half-swings.
- Gripping at the very end of the club. Choking down gives you control and makes clean contact far more achievable early on.
- Muscling the shot. If you are straining, you are compensating. Slow down until the motion feels smooth and sequenced.
- Ignoring balance. Losing your footing means your body is not supporting the swing. Keep a stable, slightly narrow stance and finish balanced.
- Never blending it back. The goal is to transfer the feel to your normal swing, so always finish with two-handed shots that reproduce the sensation.
Variations and Progressions
Once the basic waist-to-waist shots feel solid, you can progress the drill to keep challenging your control. Lengthen the swing to three-quarters, then eventually to a full but controlled motion with a mid-iron. Add a slightly longer club as your coordination improves, but resist the temptation to jump straight to woods or the driver, which magnify every timing error and load the wrist heavily.
A useful progression is to hit a one-handed shot immediately followed by a normal two-handed shot to the same target, trying to reproduce the exact feel. This “transfer” pairing is where the drill pays off, because it links the isolated sensation to your real swing. You can also perform slow, no-ball rehearsals at home, focusing purely on the feeling of the arm staying connected to your body turn and the club releasing under its own momentum.
How Often Should You Do It?
For most golfers, two or three short sessions per week is ideal during a period when you are actively working on contact or release. Because the drill is physically demanding and highly diagnostic, it is more valuable as a focused tune-up than as daily volume. If you only have a few minutes before a round, a handful of slow trail-hand swings makes an excellent warm-up that grooves tempo and release without tiring you out. Beginners should keep swings short and unhurried, while stronger players can use longer, faster reps to sharpen speed and face control.
Key Takeaways
- The one-handed drill isolates each arm to expose casting, flipping, and disconnection.
- The lead-hand version trains clubface control and stops the chicken wing; the trail-hand version trains a free, well-timed release.
- Choke down, tee the ball low, and start with half-swings using a short iron.
- Use it in short 10–15 minute doses and always blend the feel back into two-handed shots.
- Treat it as a regular check-in whenever your ball striking turns inconsistent.
