Early Extension
Also known as: standing up, losing the angles, hump the dog (coaching slang)
Early extension is thrusting the hips toward the ball during the downswing. This causes the golfer to stand up out of posture and forces compensations at impact.
Early extension is among the most common faults in amateur golf and is frequently invisible to the golfer. This is because it feels like "using the hips". This means which is right in principle but wrong in execution. The difference is between hip translation (pushing the pelvis toward the ball, toward the camera in a face-on view) and hip rotation (spinning the pelvis around the lead leg, 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 compensations. This means either the hands flip early (an early release, or "flip") to square the face. This means which can produce hook-draws or pulled draws. This means or the club gets stuck behind the body and the player blocks the shot to the right with an open face.
Early extension typically stems from one or more root causes. This means (1) inadequate hip mobility. This makes it physically easier to push than rotate. (2) a faulty pressure shift, where weight stays too far back rather than moving to the lead side. (3) a weak core or glute engagement. This causes the pelvis to drift rather than rotate. Or (4) a deliberate "drive through" motion learned from fitness or throwing sports that doesn't translate cleanly to a golf swing.
The correction is to maintain the hip-to-ground angle. This means the bowing of the spine over the ball from the hip hinge at address. This means. At the same time, the hips rotate through impact. 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 accelerates improvement for golfers who have structural causes.
To feel what proper hip rotation (not extension) looks like. This means set up to a ball, then without swinging, rotate your hips open to face the target. At the same time, 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.
The most reliable indicator of early extension on launch monitor data is a pattern of blocks to the right combined with low, shallow divots. This means 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. This means the hips are pushing at the ball, trapping the arms and forcing a late hand release to compensate.
Why it matters
Early extension creates uneven results because it relies on precise timing of a compensating flip or block. SwingVantage can flag this pattern from body position at impact in video, which is one of the clearest indicators of the fault.
How it shows up on video
Face-on video (camera in front of the golfer) is ideal for detecting early extension. Watch the space between the lead hip and the camera. This means if it decreases by a lot from the setup position through impact (hips move toward the camera/ball), early extension is occurring. The golfer will appear to "stand up" from the spine angle they had at address. Down-the-line video shows the pelvis "bumping" forward toward the camera rather than rotating cleanly around the lead leg.
Common mistakes
- Believing you are "using the hips" correctly. This means hip extension toward the ball feels active and athletic. This is why. As a result, 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 typically produces only temporary improvement.
In SwingVantage Motion Lab
Early extension is one of the faults most clearly visible in face-on video and is a detection target in SwingVantage's pose analysis. The system looks for pelvis position change between setup and impact — a reliable proxy for the hip-translation pattern. Findings are labeled by confidence level based on video quality and camera angle.
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. This means but even at tour level, excessive early extension is considered a limiting factor for peak performance.
Can fitness help with early extension?
Yes, by a lot. Hip mobility (in particular 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. This means (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.
Related terms
- Hip ClearanceHip clearance is the rotation of the lead hip out of the way through impact. This creates room for the arms and club to swing freely past the body.
- Pressure ShiftPressure shift is the movement of the center of pressure under the feet — measured by force plates — from trail to lead during the swing. Elite players shift pressure earlier and more decisively than amateurs.
- FlipA flip is when the hands flick or scoop under the ball at impact rather than the shaft leaning forward. This means it adds loft, kills compression, and is a defensive reaction to poor sequencing.
- BlockingBlocking is when the arms and club fail to fully release through impact. This means the face is held open and the ball flies straight right (for a right-hander) with no draw curve.
- Low PointLow point is where the clubhead reaches the bottom of its arc through impact. Controlling it — keeping it at or just ahead of the ball with irons — is the basis of pure contact.
- Kinematic SequenceThe kinematic sequence is the order in which body segments accelerate and decelerate during the downswing: pelvis → torso → lead arm → clubhead. Each segment slingshots the next for maximum speed.
Go deeper
Early Extension: the full lessonRelated guides & benchmarks
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