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Early Extension

Also known as: standing up, losing the angles, hump the dog (coaching slang)

Definition

Early extension is when the hips thrust toward the ball during the downswing. The golfer stands up out of posture and has to compensate at impact.

Early extension is among the most common faults in amateur golf. It is often invisible to the golfer because it feels like "using the hips," which is right in principle but wrong in execution. The difference is between hip translation and hip rotation. Hip translation pushes the pelvis toward the ball, which is toward the camera in a face-on view. Hip rotation spins the pelvis around the lead leg while maintaining the spine angle. The first is early extension. The second is what tour players do.

As the hips push toward the ball during the downswing, the upper body is crowded out of the way. The golfer is essentially "bumping into themselves," leaving no room for the arms to swing freely through the impact zone. The body responds to this crowding with one of two compensations. In one, the hands flip early (an early release, or "flip") to square the face. That can produce hook-draws or pulled draws. In the other, the club gets stuck behind the body, and the player blocks the shot to the right with an open face.

Early extension usually stems from one or more root causes. (1) Inadequate hip mobility makes it physically easier to push than rotate. (2) A faulty pressure shift keeps weight too far back rather than moving it to the lead side. (3) Weak core or glute engagement lets the pelvis drift rather than rotate. (4) A deliberate "drive through" motion, learned from fitness or throwing sports, doesn't translate cleanly to a golf swing.

The correction is to maintain the hip-to-ground angle while the hips rotate through impact. That angle is the bowing of the spine over the ball from the hip hinge at address. Drills that encourage the lead hip to rotate and clear (rather than push forward) are the most direct fix. Physical training for hip mobility and glute activation often speeds up improvement for golfers who have structural causes.

Beginner tip

To feel what proper hip rotation (not extension) looks like: set up to a ball, then without swinging, rotate your hips open to face the target while maintaining your spine angle. Your lead hip should be rotating behind you and around, not pushing toward the ball. That's the feeling to replicate in the swing.

Advanced note

The most reliable indicator of early extension on launch monitor data is a pattern of blocks to the right combined with low, shallow divots — the signature of an arm release forced by a body that moved toward the ball. On video, measure the distance between the fly of the lead hip pants and a reference line at address versus impact. Any net movement toward the ball (camera in face-on view) confirms early extension.

Example

A player who frequently "blocks" shots to the right or hits push-draws with a slight flip is almost certainly early-extending. The hips are pushing at the ball, trapping the arms and forcing a late hand release to compensate.

Why it matters

Early extension creates inconsistency because it relies on precise timing of a compensating flip or block. Motion Lab's spine-angle read shows whether you stood up. A down-the-line clip paused at impact shows whether your hips moved toward the ball.

How it shows up on video

Down-the-line video (camera behind the golfer, along the target line) is the clearest view of early extension. Note where the golfer's backside sits at address, then pause at impact: if the hips have moved toward the ball, early extension is occurring. The golfer will appear to "stand up" from the spine angle they had at address. From face-on it is harder to see, because the hips move toward the camera.

Common mistakes

Believing you are "using the hips" correctly — hip extension toward the ball feels active and athletic. This is why so many golfers do not recognize it as a fault without video feedback.
Trying to "stay down" consciously at impact — this often results in the golfer over-correcting and hitting behind the ball. The fix is hip rotation, not staying lower.
Treating early extension as an arm fault — the arms are reacting to the hip movement, not causing the problem. Fixing arm position without addressing the hip pattern usually produces only temporary improvement.

In SwingVantage Motion Lab

Motion Lab has no separate early-extension detector, and it does not see your hips move toward the ball. It estimates how much your spine angle changes across the swing, which shows standing up out of posture. It also reads your lead-knee flex. To check the hips, film down-the-line and note where your backside sits at address, then pause at impact.

Frequently asked questions

Is early extension common among good players?

Less common, but it does exist at low levels in some tour players. What distinguishes low-handicap early extension is compensating timing that is more consistent — but even at tour level, excessive early extension is considered a limiting factor for peak performance.

Can fitness help with early extension?

Yes, significantly. Hip mobility (specifically internal rotation of the lead hip) and glute activation are the two most common physical limitations that cause early extension. A fitness assessment with a golf-specific trainer or physical therapist can identify and address these underlying causes.

How do I tell if I'm early extending without video?

Common self-diagnosis cues: (1) you frequently hit the golf club against your body in the follow-through. (2) you have a pattern of push-right misses followed by flip-hooks with no apparent cause. (3) your belt buckle points at the ball (rather than past it) at the finish position. Video is the most reliable confirmation.