How to Fix a Slice in Golf: Causes, Drills, and a 4-Week Practice Plan

Quick answer

Slice diagnostic — find your pattern, then your fix

Type of slice	Ball flight	Most likely cause	Highest-leverage first fix
Pull-slice	Starts left, curves right	Out-to-in path with face right of path	Strengthen grip; close face at impact
Push-slice	Starts right, curves further right	In-to-out path with face even further right	Strengthen grip; check alignment
Straight slice	Starts at target, curves right	Face open to a near-zero path	Strengthen grip; address position
Banana slice	Starts left, curves hard right	Severely open face on a steep out-to-in path	Grip + 9-to-3 drill; gate drill for path
Driver-only slice	Slices driver, irons fine	Long shaft + ascending strike exaggerates face error	Tee height + grip; same drills with driver

Why most amateurs slice

GOLFTEC’s swing-data study, reported by Golf Magazine, found that about 60% of all golfers hit a slice, and the average slicer shoots roughly 101. The same data shows that lower-handicap players keep the clubface within about one degree of their swing direction on the downswing. Higher-handicap players sit at three to five degrees open. That gap is the slice.

The reason it matters is the modern ball-flight model. TrackMan’s research is unambiguous: assuming a centered strike, the ball curves toward the face angle and away from the club path. The face dominates start direction (roughly 80–85% on a driver). The face-to-path gap dictates how much the ball curves.

The numbers are unforgiving. TrackMan publishes the math:

• A PGA Tour driver carry of 275 yards with a 5-degree face-to-path mismatch produces about 44 yards of right curvature.
• The same driver shot with a 2-degree mismatch still produces about 19 yards of curve.
• At 300 yards, even 1 degree of face-to-path equals 12 yards of curve — which is why TrackMan University masters say tour-quality driving requires keeping that number under 1.5 degrees on the typical 30–32 yard fairway.

If you are at 3–5 degrees of mismatch, you are not having a confidence problem. You have a measurable, fixable mechanical problem.

The fix order: face, then path, then transfer

There is a long-running debate among teaching pros — captured well in this GolfWRX piece — about whether to fix the face or the path first. The honest answer is “both, in the right order, depending on the player.”

For 80%+ of weekend slicers, the order that works is:

1. Face first. A grip change is the fastest, lowest-cognitive-load face fix. It changes the face position at impact without changing your swing. You can install it in two range sessions and feel it inside ten minutes.
2. Path second. Once the face delivers closer to square, the path fix actually does something — before the face is square, swinging more from the inside just turns a slice into a push. The gate drill and the headcover-under-armpit drill are the two highest-yield path drills.
3. Transfer third. Drilling under block conditions (same shot, repeated) makes everything look great on the range. It does not transfer to the course unless the last phase of practice is random — see Block vs Random Practice in Golf for why this matters more than the drills themselves.

The reason this order works is leverage. The face contributes more to starting direction than the path does. Closing the face from 5° open to 1° open instantly eliminates ~75% of the visible curve, even on the same out-to-in path. Path comes second because it only matters once the face cooperates.

Five drills that actually move the needle

Drills are not magic — most slicers know about every one of these. The slicers who fix it permanently are the ones who do them in the right order, with measurable success criteria, and re-test against video or a launch monitor.

1. The strong-grip half-swing (face fix)

Set up with two to three knuckles visible on the lead hand. Take a half-swing — club at 9 o’clock on the backswing, finish at 3 o’clock — and hit a wedge 50 yards. Goal: 8 of 10 shots starting straight or with a slight draw, never with a slice. Stop the rep when the face is square.

2. The 9-to-3 face-rotation drill (face fix)

Same setup, but with a 7-iron. Half swing back, half swing through. Pause at finish and check that the toe of the club has rotated over the heel — the toe should be pointing roughly skyward, not at the target. This trains the face-rotation pattern your full swing needs.

3. The gate drill (path fix)

Stick two alignment sticks (or headcovers) in the ground in a “gate” — one slightly outside the ball-target line about a foot in front of the ball, the other slightly inside the line about a foot behind the ball. The gate forces a slightly in-to-out swing path. Goal: 10 mid-iron swings without hitting either stick. MyGolfSpy’s path-fix sequence explains the geometry in more detail.

4. The headcover-under-trail-armpit drill (path + connection)

Tuck a headcover or small towel under your trail armpit (right armpit for a right-hander). Hit half-swing 7-irons; the headcover should fall during the follow-through, not before impact. Promotes a connected, in-to-out feel. Caveat: this drill is famously misused — if you already swing too far inside-out, the trail-armpit version can deepen the issue. If that is you, switch to the lead armpit (left, for a right-hander), which trains the opposite feel.

5. The driver-only attack-angle drill (driver-specific)

If you slice driver but strike irons clean, the issue is usually attack angle. Set the ball one to two ball-widths forward of your normal driver position, raise the tee so half the ball sits above the crown, and feel a slight upward strike. A positive attack angle with a square face reduces side spin even on the same swing. Pair with the strong-grip half-swing for the first 10 reps each session.

The four-week protocol that makes it stick

This is the part most articles skip. Drills work in week one and stop working by week four because the fix never gets exposed to variable conditions. The plan below mirrors the howTo schema on this page and is the same sequence PracticeCaddie’s AI plans use when a user reports a slice in onboarding.

1. Week 0 — measure. Phone video down-the-line. Five drivers, five 7-irons. Record curve in yards, start direction, grip position. No fix yet.
2. Week 1 — face. 30 minutes, three sessions. Strong-grip half-swing wedges, then 9-to-3 with a 7-iron. Block practice is correct here — you are acquiring a new motor pattern. No driver yet.
3. Week 2 — path. 30 minutes, three sessions. Gate drill with mid-iron, then headcover-armpit drill with hybrid, then driver. Re-film at the end of week 2 — expect the start direction to have shifted left and curve to have shrunk from “banana” to “fade.”
4. Week 3 — random. 45 minutes, three sessions. Pre-write an 18-shot list rotating club and target. No two consecutive shots match. The fix has to survive variability before it transfers to the course. (See Block vs Random Practice in Golf for the research underpinning this step.)
5. Week 4 — pressure. 45 minutes, three sessions. Each session ends with a “first-tee” simulation: three driver shots with a fairway-or-inside-30-yards success criterion. Play one nine-hole round at week’s end. Record slice rate.
6. Maintenance. Re-film every two weeks for two months. The slice tries to return — measurement is the only reliable counter.

If at the end of week four your slice has not measurably reduced, the issue is almost always one of two things: (a) your grip change reverted under speed (re-do week 1), or (b) the path fix needs a coach with a launch monitor. Most slicers do not need a coach to fix the face. Many need one to fix a deep path pattern.

When to skip the protocol and book a lesson

Self-coaching works for the typical “weak grip + over-the-top” slice. Three patterns benefit more from a one-hour TrackMan or FlightScope lesson than from another month of self-practice:

• Two-way miss with no consistent shape. If you slice and hook in the same round, the path is unstable. A coach with a launch monitor isolates the variable in one session.
• Slice that worsens with speed. Swing changes that work at 80% and break down at 100% are usually a sequence problem, not a face/path problem. Worth diagnosing under load.
• A slice that has survived two prior fix attempts. Pattern is grooved deep enough that supervised re-patterning beats self-driven repetition. Budget one lesson + four weeks of follow-up.

A single launch-monitor session typically costs $75–$150 and saves four to eight weeks of practice in cases where the diagnosis matters more than the drill choice.

Common mistakes

• Doing path drills before the face is fixed. Swinging more from the inside with an open face produces a push-slice, which feels worse than the original pull-slice and convinces players the drill “doesn’t work.” Sequence matters.
• Over-strengthening the grip. Three to four knuckles is a draw grip. Five-plus is a hook grip. Stop at the visible-knuckle count that produces a straight ball or slight draw on the half-swing test, not at the most-rotation possible.
• Block practice for four weeks. Same shot, same target, 50 reps. Range performance climbs, course performance does not. The week-3 random-practice phase is non-negotiable.
• Skipping the baseline measurement. Without week-0 video, you cannot tell at week 4 whether anything changed. Half of the perceived “no progress” comes from poor memory of how bad it was.
• Switching drills weekly. Drill rotation feels productive but starves any single pattern of the reps it needs. Pick the four drills above and stick with them.

Key takeaways

• Face first. The clubface drives starting direction (~80–85%) and a closed-to-path face reduces curve even on a bad path.
• Most amateur slicers sit at 3–5° open face at impact (GOLFTEC data) versus under 1° for low-handicap players.
• TrackMan’s math: every degree of face-to-path mismatch produces ~12 yards of curve at 300 yards.
• Strong grip is the highest-leverage face fix. Two to three knuckles on the lead hand at address.
• Gate drill plus headcover-armpit drill is the highest-yield path-fix pair.
• Four weeks of structured practice — face → path → random → pressure — is the protocol that makes the fix transfer to the course.
• Random practice in week 3 is the difference between a range fix and a course fix. See Block vs Random Practice in Golf for why.

Frequently asked questions

What causes a slice in golf?

A slice is caused by a clubface that is open relative to the swing path at impact — the ball curves toward where the face is pointing, away from where the club is moving. For most amateurs, the dominant problem is a face that is three to five degrees open at impact (per GOLFTEC’s swing data), often paired with an out-to-in path that adds extra side spin. Grip, setup, and transition sequence are the three usual culprits.

Should I fix my clubface or my swing path first?

Fix the face first for most amateur slicers. The clubface contributes roughly 80–85% of starting direction, and a closed-to-path face will reduce slice spin even on a bad path. Strengthening your grip is the single highest-leverage face fix — it changes face delivery without changing your swing. Path fixes take longer because they involve sequencing, so layer those in once the face is reliable.

How long does it take to fix a slice?

Most golfers see meaningful change in three to four weeks of structured practice — roughly two to three sessions a week. Full elimination usually takes eight to twelve weeks because retention requires variability (random practice with rotating clubs and targets, not block reps of the same shot). Block practice on the range can mask the issue inside a session and let it come back on the course.

Why do I slice my driver but not my irons?

Three reasons. First, the driver has the longest shaft and the lowest loft, so any face-to-path mismatch at impact produces more side spin and more visible curve than an iron does. Second, drivers are usually hit off a tee with a sweeping, ascending strike, which exposes path errors that a downward iron strike hides. Third, golfers typically swing harder with driver, which amplifies any sequence flaw. The fix is the same — face first, then path — but expect more visible curve at the start.

Can a stronger grip really fix my slice?

Yes, in many cases. A “weak” grip — hands rotated counter-clockwise (for a right-hander) so you see only one knuckle on the lead hand — encourages an open face at impact. Strengthening to two or three knuckles changes the rotation pattern and closes the face. Tony Finau famously made this exact change to convert a slice into a power fade. Combine with the half-swing 9-to-3 drill so you can feel the new face position at impact.

Related reading

• Block vs Random Practice in Golf: What the Research Actually Says — the motor-learning research behind the week-3 transfer phase of this protocol.
• Golf practice drills that actually transfer to the course — the drill list curated against the same skill-acquisition literature.
• Driving range practice plan — how to structure the 30–45 minute sessions in this protocol.
• Golf practice plan by handicap — what to weight as you move from “fix the slice” to “lower the handicap.”

Want a four-week slice-fix plan personalized to your specific miss, your available range time, and your handicap? Build one free in 30 seconds — PracticeCaddie’s AI plans rotate the drills above into a structured, randomized session list and track your slice rate across rounds.