Early Extension: The Two Root Causes — and Why a Chair Cannot Fix Your Swing

6:40 a.m. at the practice tee

6:40 a.m., 4 degrees Celsius, a practice range forty kilometres west of Boston with exactly two people on it. One is the man opening the gate. The other is a regular, fifty-two years old, a fourteen handicap, who has placed a white plastic chair directly behind his backside and assigned himself the simplest drill on earth: hit twenty balls without letting his hips touch the chair.

He never touches the chair. All twenty balls still fly low, thin, and curve right over the final sixty metres. When I ask what he is fixing, the answer comes immediately: “Keeping my hips back.” When I ask why his hips move toward the ball in the first place, he goes quiet.

In swimming, young coaches shout “don't lift your head to breathe.” Experienced ones go and check body rotation and the timing of the exhale, because the lifted head is only the last frame of a rotation sequence that has gone wrong. The golf swing works the same way: the hips moving toward the ball are the final frame of a causal chain that begins several hundredths of a second earlier. Fixing the last frame without touching the chain is the most efficient way to preserve the old fault inside a new costume.

GOLF.com's Instruction piece “2 huge reasons golfers have early extension — and how to fix them” starts at exactly that point. And its most valuable passage is the one where it argues against itself.

Context: an instructional piece inside a content machine

The original is an evergreen instructional explainer: no tournament results, no ShotLink or Data Golf data, no field information, no governance content. That shapes how it should be read. Its value is shelf life, not heat. A tournament report dies in seven days; a lesson about the pelvis can live for ten years.

But it lives in a brutal market. Short-form tips on social platforms now absorb most recreational golf-learning traffic, and every forty-five-second video promises a complete fix. To survive, long-form instruction has to pick a fight: to show that the short tips are feeding the fault. This piece picks its fight with the cue “keep your hips back” — a cue I have heard on essentially every trial lesson at every range I have stood on.

The ball travels its arc, but I am reading the money moving around it. Instruction is one of the few golf content categories immune to the split between tours: it monetises attention regardless of where an example player competes. Which is why it is produced in volume, optimised hard for search, and frequently compressed until only the “how to” survives — the most sellable part, the least risky part, and the part with the least diagnosis in it.

One foundational definition, because plenty of recreational players still conflate it: early extension is the pelvis and hips moving toward the ball between address and impact, lifting the chest, losing spine tilt, and shifting the low point of the arc. The consequence is unstable contact — thin today, fat tomorrow, with no obvious reason why the same swing produced two results.

Mechanism: hips do not lunge at the ball on their own

The strongest mechanistic move in the piece is that it frames early extension as a compensation, not a root fault. The body creates space at impact because the club is arriving out of position, or because the pivot is blocked. The pelvis thrusting toward the ball is not a conscious choice; it is the motor response of a system trying to put the face on the ball.

I have sat through enough range sessions to see this repeat. Trapped players usually do not know they are compensating; they only know the ball is not going. When a coach shouts “keep your hips back,” the player often manages it for three swings — then the body finds the old road again, because the old road is the only one it knows for delivering the club. An empty range forces you to read a swing the way you read an unedited manuscript: every trace of how it was written is still there, and nobody has cleaned it up.

The original names two root causes. I will take them one at a time, with the risks the piece leaves out.

Cause one: a downswing plane that is too steep

When the club comes down too steeply or from outside the line, the arms need somewhere to go. The pelvis moves forward, the chest lifts, and the arc is flattened crudely — enough to reach the ball, not enough to control it. For a right-handed player this pattern usually arrives with a left-to-right curve, a divot pointing left, and a feeling of being stuck under the right shoulder.

The proposed remedy is more backswing depth so the club arrives in a better position at the start of the downswing. Logically, this intervenes at the right layer: it changes where the sequence starts rather than what it does at the end.

But there is a trap the piece does not flag, and it is the trap I see most often in players teaching themselves from video. Chasing “depth” without a pressure constraint produces a sway, an over-run, or a reverse pivot. The player trades early extension for something worse: weight drifting outside the trail foot, head moving, contact becoming less predictable than before. Backswing depth has to be paired with a constraint — keeping trail-knee flex, or monitoring trail-foot load — rather than treated as a standalone goal.

Cause two: pressure retained in the trail foot

Cause two is a ground-force story. The player loads into the inside of the trail foot in the backswing but does not move it to the lead foot in transition. The pivot is then blocked by the player's own weight, the arms get trapped behind the hips, and the body pushes the pelvis toward the ball to free the club's path.

The remedy: load into the inside of the trail foot, then shift to the lead foot from the start of the downswing. The description is directionally correct, and it sits inside the ground reaction force wave that has become the dominant lower-body teaching paradigm since force-plate data entered mainstream coaching. The piece rides that wave without citing it — a common habit in this genre.

The trap here is symmetrical. Over-emphasising the shift to the lead side produces a slide or lunge, drifts the low point forward, and creates a new fat-and-thin pattern. Players who already hit thin shots often get thinner for the first two weeks. The timing of the shift is transition, not backswing — a detail important enough to be bolded in the original, and it is not bolded.

One methodological credit: the piece describes both causes qualitatively, with no degrees, inches, or percentages. Professional coaching literature commonly quantifies pelvic thrust, but thresholds vary by measurement system. I therefore mark this section as data pending verification rather than fact.

McIlroy: a useful model and a warning

The original uses Rory McIlroy as its visual exemplar. He shifts pressure to the lead side, rotates and clears the pelvis, and creates room for the arms rather than consuming it. That is a legitimate reading of one of the most copied swings of the past decade.

A citable fact with source context: McIlroy was born on 4 May 2026 and holds four majors — the 2026 U.S. Open at Congressional, the 2026 PGA Championship at Kiawah, the 2026 Open Championship at Hoylake, and the 2026 PGA Championship at Valhalla. The major drought since then is the defining narrative of the second half of his career.

An editorial credit: the piece explicitly states that McIlroy's flexibility and athleticism are not prerequisites for the underlying principles. That is a responsible decision and it materially reduces the imitation risk a pure “copy the star” piece would create.

A gap remains. McIlroy is an outlier in clubhead speed and rotational mobility; presenting him as a template for a mid-handicap with restricted hip internal rotation is a category error. The principle transfers; the magnitude does not. The piece separates principle from magnitude in a single sentence — but that sentence is an assertion, not evidence.

Three gaps: the face, the body, and the club

The original names two causes. In real diagnosis there are at least four commonly identified groups, and the other two are absent.

The third is face-control compensation. A player who cannot square the face with the hands will thrust the pelvis to buy time. For this group every hip drill fails, because the hips are only doing what the wrists cannot.

The fourth is physical restriction: limited hip internal rotation, limited thoracic extension, or insufficient ankle dorsiflexion. A player with restricted hip rotation who is told to keep the hips back is being set up for a swing the body cannot deliver — and the bill is usually paid by the lower back.

One more group deserves separate treatment because it is equipment, not technique: early extension is frequently a symptom of an ill-fitted club. A lie angle that is too upright, a shaft that is too long, or excessive knee flex at address forces the player to stand up to return the club to the ball. Fixing the technique without re-checking lie angle and shaft length is the most common reason technique changes fail to survive three weeks. The original is silent here, and the silence matters.

The diagnostic problem: two faults, two populations

The two causes do not belong to the same player. They belong to different populations, and collapsing them into one remedy set is the piece's biggest execution weakness.

Group A is the steep, over-the-top player — typically a slicer, higher handicap, out-to-in path, divot pointing left. Group B is the better player who hangs back, loses compression, hits it thin, and cannot work out why distance has dropped. They need different interventions, different dosage, and different checkpoints.

An instructional article with no diagnostic protocol will be applied at random: the reader picks whichever cause sounds more like them. That is why I keep returning to sequencing. Before the prescription, the player needs to know which pattern is present — through ball flight, divot pattern, and path data where available. Without that step, good advice can still be used badly.

The counter-intuitive angle: the chair is a test, not a cure

The strongest part of the original is its self-critique of the wall-and-chair drill. It correctly separates awareness training — a drill that teaches the feel of the hips staying back — from root-cause remediation, a change to backswing depth or pressure sequencing. That distinction is right, and it is the piece's genuine value-add over generic instruction.

But there is a deeper and less comfortable layer. The coaching industry sells drills because drills can be demonstrated in sixty seconds; diagnosis cannot. A coach who puts a chair behind a student and films it produces shareable content. A coach who spends three sessions establishing whether the problem is the face, the hips, or the club produces nothing shareable. That incentive structure explains why the chair drill outlives the diagnostic method.

The second layer sits in the data. Force plates and 3D kinematics are becoming the industry's new astrology: a pressure trace is projected onto a screen, the player nods, and both parties believe a phenomenon has been explained. The graph describes motion; it does not tell you which of four causal groups is active. Reading a trace as though it were a horoscope is the most sophisticated way available of not having to think.

They doubt the voice before they hear the argument. I learned to earn the evidence first and expect the hearing second — and that applies to decent pieces like this one too. An instructional article with no sample, no handicap range, no before-and-after, and no measurement technology is offering professional opinion grounded in experience, not demonstrated efficacy. Saying so out loud respects the reader; it does not diminish the author.

And there is a material omission: no timeline. Re-patterning pelvic behaviour and pressure sequencing is a motor-learning task measured in weeks to months. A reader expecting a range-session fix will pass through the dip, conclude it does not work, and revert to the old cue. Coldness is a long-term strategy, not a character flaw — and a six-to-twelve-week block with measurable checkpoints is the only way that coldness pays.

Verified data

• Primary source: GOLF.com, Instruction vertical, “2 huge reasons golfers have early extension — and how to fix them.” Publication date is not stated in the secondary source extract; it requires direct verification on the original page.
• The original supplies no strokes-gained data, no sample size, no handicap range, no before-and-after outcomes, and no measurement technology. All prescriptions are professional observation.
• McIlroy: born 4 May 2026; four majors — 2026 U.S. Open (Congressional), 2026 PGA Championship (Kiawah), 2026 Open Championship (Hoylake), 2026 PGA Championship (Valhalla).
• Quantitative thresholds for pelvic thrust and foot-pressure distribution vary by measurement system (force plates, in-shoe pressure, 3D kinematics); the original is qualitative only, so any specific figure requires independent verification.
• The points about lie angle, shaft length, and hip internal rotation restriction are standard fitting and physical-screening principles, not content contained in the original article.

Takeaway

What is worth keeping from the original is not the two causes but the way it refuses to sell the reader a magic phrase. In a market where every forty-five-second video promises a complete fix, saying “your hips are compensating for something else” is an act of discipline.

The missing piece is the one only the player can supply: a diagnostic session before buying the drill. Before you put the chair behind you, do you know which of the four causal groups you belong to — or are you simply practising somebody else's drill?