André Rennes — Driver #4 · Full Swing Analysis

1 Executive summary

Bottom line: a driver swing with a very quiet head and a clear new fix. At impact the head was only ~0.5 in lower than at address, the smallest head drop in his driver reports ★ (earlier reports: ~5 in and ~4.6 in). The hips are the new story: they sat ~5.2 in closer to the ball at impact (early extension), where report #3 had them ~0.9 in away. No range screen was shown, so there is no carry, total or ball speed for this swing, and no ball-flight personal bests to flag.

Rotation looks strong: about 85° of shoulder turn against ~40° of hip turn, an X-factor of about 45°, the same as report #3 (estimates, ±10-15°). The tempo is the outlier at ~6.2:1: a long 1.34 s backswing and a quick 0.22 s downswing. That is far from the 3:1 Tour Tempo target and the slowest ratio in the logbook.

Strength

Quiet head ★

Head ~0.5 in lower at impact, against ~5 in and ~4.6 in in earlier driver reports. Hips also stayed ~0.8 in lower, with no standing up.

Priority 1

Hips stay back

Hips moved ~5.2 in toward the ball by impact (early extension), with most of it already done at the top (~4.2 in). Keep the back pockets on the tush line.

Priority 2

Smooth the tempo

1.34 s back and 0.22 s down gives ~6.2:1. Aim for a shorter, steadier backswing (about 0.8 s) with the same quick downswing, so the ratio moves toward 3:1.

2 Timing & tempo — measured from the video

41.8 frames per second, so each frame is about 0.024 s. The backswing starts at frame 73 (1.75 s), the top is at frame 129 (3.08 s) and impact is at frame 138 (3.30 s).

Group	Backswing	Downswing	Ratio
André (driver #4, Oct 28 session)	~1.34 s	~0.22 s	~6.2:1
André (driver #3, Oct 11 session)	~0.67 s	~0.27 s	~2.5:1
André (driver #2, report Oct 10)	~0.60 s	~0.33 s	~2:1
André (driver #1, Oct 7)	~0.50 s	~0.25-0.3 s	~2:1
André (3-wood, Oct 24)	~0.50 s	~0.30 s	~1.7:1
PGA Tour (Tour Tempo, "24/8")	~0.80 s	~0.27 s	3:1

Tour figure: John Novosel, Tour Tempo. One frame either way on the downswing moves the ratio between ~5.5:1 and ~6.8:1. The ball could not be seen, so impact is placed from the hand tracking. If the club actually met the ball a few frames later, the downswing would be longer and the ratio lower.

What it means: The downswing (0.22 s) is quick, a little under the Tour 0.27 s and shorter than all his earlier driver downswings. The backswing is the part that stands out: it is nearly twice the Tour 0.80 s and over twice his earlier driver backswings (0.50-0.67 s). Part of it is probably a slow, drawn-out start, since the hands had already moved ~4.3 in by the takeaway frame. A steadier backswing should make the swing easier to repeat.

3 The reference frame — how this swing was measured

Grid: each square is about 5 inches (~23 px). It is scaled from his body size in the frame (his height was not given), so treat distances as ±1 inch.
Center lines and diagonals (gold and bronze): the vertical and horizontal lines and the two corner diagonals cross at the belt buckle at address. They are the fixed reference for balance, height and perspective. The camera stayed still: the background moved less than 1 px, so no correction was needed.
Depth rays: no alignment sticks or mat edges are visible (he stands on grass), so there is nothing to draw the rays from. Depth cannot be separated from sideways motion in this clip, and the diagonals only give a rough perspective guide.
Height lines: the white line is the top of the cap (head height) and the orange dashed line is waist height at address. The dashed light-blue lines mark shoulder and knee height at address.
Tush line: the dashed red line is the back of the hips at address (down-the-line style view). Hip movement toward the ball is measured against it. The red trail is the head path and the yellow trail is the hands' path.
Tracking and rotation: body points were tracked on every frame (260 frames) and checked by eye at each key position. Shoulder and hip turn are visual estimates (±10-15°) because the golfer is small and far away. The ball could not be seen at this distance, so there is no start direction or finish line for the shot.

4 Swing sequence

Nine key positions, filmed from long range, roughly behind and to the side of the golfer. This is not a true down-the-line or face-on view.

Photo 3 · Lead arm parallelt 2.03s · frame 85

Photo 5 · Arm parallel (down)t 3.13s · frame 131

Photos are numbered in the order they happen in the swing. The frames follow the standard swing positions.

5 Position-by-position biomechanics

Photo 1 — Address Reference

This is not a true address frame: the shaft is already swinging up to the left, which matches a waggle just before the start. Frame 69 is still used as the measuring point for every distance in this report.
Tall posture, with the head at the white cap line.

Photo 2 — Takeaway Good

The head holds its height (0.0 in down) and moves only ~0.5 in toward the ball.
Hips start to shift (~0.4 in toward the ball) and the hands have traveled ~4.3 in from their address spot. The start is slow and smooth.

Photo 3 — Lead arm parallel Good width

The head is steady (about 0.1 in higher, ~0.1 in toward the ball), a nice quiet base.
Hands ~8.8 in from address. Hips ~1.1 in toward the ball, so the shift begins here.

Photo 4 — Top Hips slide in

Shoulders turned about 85° and hips about 40°, so the X-factor is about 45°. This is a strong coil.
Head ~0.4 in lower and ~1.1 in toward the ball, still very quiet.
Hips already ~4.2 in toward the ball at the top. Last time they moved away from it, so the early extension starts in the backswing.

Photo 5 — Arm parallel (down) Quick drop

Only 2 frames after the top, the hands are ~9.1 in from their address spot and coming down fast.
Hips ~4.6 in toward the ball, head ~0.4 in lower.

Photo 6 — Delivery Watch

Hands ~7.3 in from their address spot, hips ~4.8 in toward the ball and ~0.2 in higher.
Head ~0.3 in lower, ~1.4 in toward the ball.

Photo 7 — Impact Hips and hands

Head is only ~0.5 in lower ★ and ~2.2 in toward the ball. The head is the strong point here.
Hips ~5.2 in toward the ball (early extension), but ~0.8 in lower, so he does not stand up.
Hands ~6.5 in from their address spot. Part of this comes from the address frame being a waggle, so read it with care.
Shoulders ~20° open and hips ~35° open (low-confidence estimate, ±10-15°). The ball is not visible.

Photo 8 — Release Good

Arms extend and the chest keeps turning; the head stays at ~2.2 in toward the ball and ~0.3 in lower.
Hips ~5.1 in toward the ball, hands ~11.9 in from their address spot as the club swings through.

Photo 9 — Finish Balanced

Tall, turned and balanced, with the hands high.
Head ~7.5 in toward the ball and ~1.3 in higher, hips ~7.9 in toward the ball. At this angle, part of that is the body turning to face the target.

Overlay — head at address, top and impact

Measure (vs address)	Top	Impact	Driver #3, Oct 11 (top / impact)	Reading
Head, down	~0.4 in	~0.5 in	— / ~4.6 in	Good best driver head drop so far ★
Head, toward the ball	~1.1 in	~2.2 in	— / ~5.2 in	Watch much less than before
Hips, toward the ball	~4.2 in	~5.2 in	— / ~0.9 in away	Fix early extension
Hips, height	~0.5 in lower	~0.8 in lower	— / waist up ~2.8 in	Good no standing up
Hands vs address	~16.7 in	~6.5 in	— / ~0.9 in	Fix address frame was a waggle
Shoulder turn	~85°	~20° open	~85° at the top	Estimate (±10-15°)
Hip turn	~40°	~35° open	~40° at the top	Estimate (±10-15°)
X-factor (shoulders − hips)	~45°	—	~45°	Same as #3, a good coil
Tempo	1.34 s back	0.22 s down	~2.5:1	Watch ~6.2:1, very slow back

Depth note: the camera sits at an angle, so every "toward the ball" number mixes real movement along the depth direction with sideways movement and body rotation. Part of the hips' 5.2 in may be the hips turning, as seen from this angle. A true down-the-line or face-on clip will settle it (see Limitations).

6 One pattern, the whole bag

Report	Head down	Head toward ball	Hips toward ball	Tempo
Driver #1 · Oct 7	~5 in	~2 in	—	~2:1
Driver #3 · Oct 11 session	~4.6 in	~5.2 in	~0.9 in away	~2.5:1
3-Wood #1 · Oct 24	~5 in	—	0 in	~1.7:1
Driver #4 · Oct 28 session	~0.5 in	~2.2 in	~5.2 in	~6.2:1

The link: in his earlier driver and 3-wood reports the head sank about 5 in while the hips stayed back or held their depth. In this swing the two traded places: the head is steady and the hips move in. That suggests the body is looking for the same room to swing, and this time it found it by sliding the hips toward the ball. The next goal is to keep the quiet head and bring back the quiet hips from the 3-wood and driver #3.

7 Diagnosis

Head is very steady: ~0.5 in lower and ~2.2 in toward the ball at impact. That is the best head control in his driver reports ★.
Hips move toward the ball: ~4.2 in by the top and ~5.2 in by impact. This is a change from driver #3 (~0.9 in away) and the 3-wood (0 in).
No standing up: the hips are ~0.8 in lower at impact, so the early extension is a slide rather than a rise.
Good coil: about 85° of shoulder turn and ~40° of hip turn gives an X-factor of ~45°, the same as report #3 (estimates, ±10-15°).
Hands ~6.5 in from the address spot at impact, but the address frame was a waggle, so this likely overstates the real difference.
Tempo ~6.2:1 (1.34 s back, 0.22 s down) is the slowest backswing ratio in the logbook, against the Tour 3:1.
No ball data: the range screen was not shown and the ball could not be tracked, so the effect on ball flight is unknown.

Confidence: high on tempo timing (frame by frame, with impact placed from the hand tracking); moderate on head and hip distances (grid scaled from body size, ±1 inch, oblique view); low on shoulder and hip turn (±10-15°) and on how much of the hips' 5.2 in is real slide versus rotation seen from the side.

8 Next steps — keep it simple

Priority 1 · Hips stay back

Back pockets on the line

Set up with a golf bag or chair just behind the hips, touching lightly. Make 10 slow driver swings keeping contact through the downswing, then 10 normal swings.

Feel: "turn, don't slide toward the ball." Hips moved ~5.2 in toward the ball here, against ~0.9 in away in driver #3.

Priority 2 · Tempo

Shorter, steadier backswing

Count "back-2-3, down" at an even pace, with no slow creep at the start. Aim for a backswing of about 0.8-1.0 s with the same quick downswing.

Moves the ratio from ~6.2:1 toward 3:1 without slowing the 0.22 s downswing.

Capture · Still address

Pause before the takeaway

Stand still at address for 2 seconds before starting the swing, so the address frame is clean.

Makes the hands and head comparison exact, so the 6.5 in can be read with confidence.

Keep · Quiet head

Cap on the white line

Whatever he did with the head here, keep it: the top of the cap stays near its address line through impact.

Head ~0.5 in lower at impact is the best in his driver reports ★.

9 Limitations & next capture

One swing is a snapshot, and there was no range screen, so ball speed, carry, total and spin are unknown.
The ball could not be tracked at this distance, so there is no start direction or finish line, and impact is placed from the hand tracking.
Distances come from a grid scaled to body size (±1 inch); his real height would make the scale exact.
The camera angle is oblique, with no sticks or mat edges, so depth cannot be split from sideways motion or body rotation.
The address frame was a waggle, so the hand comparison against address is approximate.

Next capture: (1) a true down-the-line view with alignment sticks on the grass, (2) a face-on clip at chest height, (3) a still pause at address, (4) the range screen right after each shot, (5) 3-5 balls for an average, and (6) André's height, to lock the grid scale.