Slice Fix: What Your Swing Video Will Show You

By the Break80 team · Updated July 2026 · 9 min read

You have tried the tips. Strengthen your grip. Swing more from the inside. Drop the club in the slot. And your ball still starts left and peels 40 yards into the right rough.

Generic slice advice fails because a slice is not one fault. It is a chain of faults that feed each other, and the fix depends on which links are broken in your swing. You cannot diagnose that by feel — feel lies, especially in a swing you have repeated ten thousand times. You can diagnose it in three minutes with a phone propped against your golf bag.

This article shows you how: what a slice actually is, how to film your swing so the footage is usable, the three checkpoints to inspect frame by frame, and the fixes in the only order that works. Do it out of order and you will make the slice worse. That is not a scare tactic — it is ball-flight physics, so we will start there.

The ball-flight laws in plain language

Two things determine your ball flight, and only two:

The clubface sends it. Where the face points at impact controls roughly 75 to 85 percent of the ball's starting direction (more with a driver, slightly less with wedges).
The path curves it. The ball curves away from the swing path and toward where the face points, whenever the two disagree.

A slice is one specific disagreement: the face is open relative to the path. The clubhead travels left of the target (for a right-hander) while the face points right of that path. That gap tilts the ball's spin axis left-to-right, and the ball curves right. The bigger the gap, the harder the curve.

Two things follow, and both matter for the fix order later:

The face is the primary problem. An out-to-in path with a square face produces a soft pull-draw tour players use on purpose. The same path with an open face produces your slice.
Your path is a symptom, not a cause. Most slicers swing out-to-in because their face is open — the brain knows the face points right, so it steers the swing left to compensate. Fix the face and the reason for the steer disappears. Fix the path first and you have aimed an open face further right: the slice gets bigger.

So the real question is not "how do I stop coming over the top." It is "why is my face open, and what is my body doing to compensate." Your video answers both.

How to film your swing so the footage actually tells you something

Bad camera work produces bad diagnoses. An angle that is off by a few feet can make a perfect swing look over-the-top, or hide a genuinely steep move. Set up the down-the-line view like this:

Position: phone directly behind you on the target line, 3 to 4 meters back, looking straight down the ball-to-target line — not from behind your body.
Height: hand height, around hip level. On the ground pointing up or at head height pointing down both distort the plane.
Framing: you and the club fully in frame at the top of the backswing.
Frame rate: slow motion, 120 or 240 frames per second. The downswing takes about a quarter of a second; at normal frame rates the moments you need literally fall between frames.
Reps: three to five swings with a mid-iron and your driver. The slice is usually most extreme with the driver, but the cause shows up in both.

Also grab one face-on video (camera on an extension of the ball line, pointing at your chest) for the grip checkpoint below. Then scrub frame by frame. Your phone's photo app works; an app like Break80 auto-detects the key positions and draws the reference lines for you, but the diagnosis logic is the same either way.

Now check three things, in this order.

Checkpoint 1: grip and setup — the origin of the open face

Pause the face-on video at address and zoom in on your hands.

A slicer's grip: the left hand (top hand, for a right-hander) is rotated too far toward the target — one knuckle visible or none, with the V of thumb and index finger pointing at your chin or left shoulder, and the right hand sitting on top of the club rather than on its side. Coaches call this a weak grip, and it is the most common root cause of a slice. Under speed, your hands return to a natural, neutral position at impact no matter what you intend — and from a weak grip, neutral means open.

What you want: two to three knuckles of the left hand visible, both Vs pointing between your chin and right shoulder.

While you are paused here, check two more setup items:

Shoulder alignment: slicers almost always set up with shoulders open (aimed left) without knowing it, pre-setting the out-to-in path before the club moves.
Ball position: a driver ball too far forward is reached late in the arc, after the path has already swung back left — more out-to-in for free.

If your grip is weak, you have very likely found patient zero. But keep going — you need to see the full chain.

Checkpoint 2: the top of the backswing and the over-the-top move

Switch to the down-the-line video. Pause at the top of the backswing.

Clubface at the top: look at the leading edge. If the face points at the sky — toe hanging down, full face visible from behind — the face is open at the top, and a weak grip almost always produces this. If the leading edge roughly matches your lead forearm angle, the face is square.

Now watch the transition — the first move down. Draw a line along the club shaft at address, extended up past your shoulder. In a neutral downswing, the clubhead drops below or onto that line coming down. In a slicer's downswing, the hands and clubhead push above and outside it in the first frames — the shoulders spin open, the right shoulder lurches toward the ball, and the club approaches from outside the target line. That is the over-the-top move.

Here is the part almost nobody tells you: over-the-top is intelligent compensation, not the disease. Your subconscious knows the face is open. An open face down a neutral path sends the ball dead right — so your body learned to throw the club out and left, starting the ball near the target and letting it curve back. It is a survival move, and it works just well enough to keep you from fixing the real problem.

That is the causal chain, every link now visible on your screen: weak grip, therefore open face, therefore instinctive over-the-top steer, therefore out-to-in path with an open face, therefore slice.

One more thing to check at transition: tempo. Slicers overwhelmingly rush the change of direction — the frantic move from the top is what throws the club outside. Good swings run close to a 3-to-1 backswing-to-downswing ratio; slicers often come down at 2-to-1 or faster. Measure yours in seconds with our free swing tempo tool, and if the ratio is way off, read our guide to golf swing tempo alongside this one — a rushed transition will sabotage every fix below.

Checkpoint 3: the face through impact

Scrub to the frames just before and after impact on the down-the-line video. At 240 frames per second you get two or three usable frames.

What to look for: just after impact, can you see the full clubface pointing at the camera, glove logo facing the sky? That is an open face and a cupped (bent-back) lead wrist. In a square release, the toe rotates over the heel through the ball, the back of the lead wrist stays flat, and within two frames after impact the face has turned toward the ground.

Two confirmations: with irons, a divot pointing left of the target line confirms the out-to-in path; and a high, steep finish with the arms disconnected from the chest is another signature of the steer.

You now have a complete diagnosis: grip, face at the top, transition move, face through impact. Time to fix it — in the right order.

The fixes, in the only order that works

Order matters more than the drills themselves. Face first, path last. Chase the path while the face is still open and every degree of path improvement adds a degree of slice curve — your misses get worse and you abandon the change within a week. This is the mistake behind almost every failed slice fix.

Fix 1: the grip (week 1)

Rotate your lead hand until you see two to three knuckles at address, and set the trail hand more on the side of the handle, V pointing at your right shoulder. It will feel absurd — like you will hook every ball into the next county. You won't; your release will fight it at first.

Drill — the knuckle check: hit 30 half-speed short-iron shots, and before every single one, look down and count knuckles. No full swings until the new grip stops feeling alien — typically 200 to 300 balls. Re-film face-on after each session, because the grip will silently creep back weak if you let it.

Fix 2: face control and release (weeks 2 to 4)

With the grip neutralized, teach the face to close through impact.

Drill — split-hand release: grip a mid-iron with your hands a few centimeters apart and hit slow, waist-high-to-waist-high shots, deliberately letting the toe turn over the heel through the ball. The separated hands exaggerate the forearm rotation you have been suppressing for years. Hit 20 split-hand shots, then 10 normal ones reproducing the feel. Success looks like a pull or a pull-hook — celebrate those. A golfer who can hook the ball on command has face control; the slice is now optional.

Fix 3: the path (weeks 4 to 8)

Only now, when your miss has become a pull or a draw, do you shallow the path. Often you will not need much: once the face stops hanging open, the reason for the over-the-top steer is gone and the path improves on its own within a few sessions. Your video will tell you whether it has.

Drill — the headcover gate: place a headcover just outside the ball on the far side of the target line. An over-the-top path clips it; an in-to-out path misses it. Start at half speed. Re-film down-the-line weekly — the club should now drop under your original shaft line instead of jumping above it.

Why the band-aid fixes backfire

Two "fixes" feel logical and make everything worse:

Aiming further left. Aiming left opens your shoulders, which steepens the out-to-in path, which — with the same open face — increases the face-to-path gap. More gap, more curve. You have not allowed for the slice; you have fed it. This is why it has grown over the years, not shrunk.
Buying a stronger-lofted or draw-biased driver. Lower loft reduces backspin and lets the sidespin tilt dominate — the curve gets more violent, not less. Draw bias masks maybe a third of it while the face problem keeps compounding. Equipment can polish a fixed swing; it cannot fix a broken one.

Both band-aids treat the ball flight instead of the impact conditions that create it. The video shows you the impact conditions. Fix those.

How long until it holds on the course

Be realistic, because false expectations kill more swing changes than bad drills do:

Days 1 to 10: the new grip and release feel wrong and contact gets worse before it gets better. Normal and temporary.
Weeks 2 to 4: the slice becomes a pull or a baby fade on the range. On the course, under pressure, the old pattern still shows up on half your swings — the brain reverts to old motor patterns when the target matters.
Weeks 4 to 8: with two or three range sessions a week plus weekly video checks, the new pattern becomes the default. Most dedicated amateurs play their first genuinely slice-free round in this window.

The single biggest predictor of whether the change sticks is measurement frequency. Players who re-film weekly catch the grip creeping weak within days and correct it; players who go by feel drift back in three weeks and conclude the fix "didn't work." This is exactly the weekly film-compare-adjust loop Break80 is built around: film, check against last week's checkpoints, get one thing to work on, repeat.

The payoff is enormous. The slice is the number one score-wrecker at every level below single digits — it is the difference-maker fault in our guides to breaking 100 and breaking 90, because a driver you can keep in play is worth more strokes than any short-game hack.

Your slice-fix checklist

Save this. Work it top to bottom, and do not skip ahead.

Film it: down-the-line at hand height, 3 to 4 meters behind, 240 fps, plus one face-on video.
Checkpoint 1 — setup: count knuckles, check the Vs, check shoulder alignment and ball position.
Checkpoint 2 — top and transition: face open at the top? Club jumping above the shaft line? Check your tempo ratio with the tempo tool.
Checkpoint 3 — impact: open face and cupped lead wrist through the ball? Divot pointing left?
Fix the grip first. 200 to 300 balls of knuckle-checked half swings.
Then the face: split-hand release drill until you can hook the ball on command.
Then the path: headcover gate drill — only once your miss has moved left.
Re-film weekly. Compare against your baseline video and correct drift early.
Give it six to eight weeks before you judge the result on the course.
Never aim left, never buy loft to hide a curve you have not fixed.

The slice is not a mystery and it is not permanent. It is a visible, filmable, fixable chain of causes — and the first honest look at your own swing on video is the day it starts to die.