Birdie GAiSwing Analysis
6-Iron · Full Swing Analysis

André Rennes

A frame-by-frame review of the October 14 6-iron swing at Mariners from the three-stick station, measured with the full reference frame (grid, center lines, diagonals and depth rays), with the complete ball-flight readout from the range screen and simple next steps.

PlayerAndré Rennes (right-handed)
Club6-Iron · report #3
LocationMariners Point Golf Center, Foster City, CA
Footage1 swing · down-the-line + range screen
Session dateOctober 14, 2026

1 Executive summary

Bottom line: his best 6-iron on record. 146 yards carry, 150 total, 107 mph of ball speed. All three are 6-iron personal bests (previous: 140 carry, 149 total, 103 mph), and the ball speed is only 5 mph shy of the LPGA Tour average (112 mph).

The launch came down from 23° to 20°, still above the tour window but moving the right way. The hips held their depth through impact (no early extension) for the second report in a row. The constant is still there: the head drops about 6 inches by impact. The ball curved 17 ft right.

Strength

Speed and hips

107 mph ball speed (personal best), hands back at their address spot, hips holding depth.

Priority 1

Stay tall

Keep the cap on its address line. The dip forces the body to stand back up through impact, which adds loft and launch.

Priority 2

Flight it down

Hands ahead of the ball at impact. Aim for a 16–18° launch with the same speed.

2 Ball flight — range screen

Range screen readout
MetricAndré todayAndré 6-iron #1LPGA Tour avgPGA Tour avg
Ball speed107 mph ★103 mph112 mph132 mph
Carry146 yds ★140 yds153 yds183 yds
Flat carry144 yds———
Total150 yds ★149 yds——
Launch angle20°23°17.1°14.1°
Apex81 ft (27 yds)87 ft25 yds31 yds
Landing angle44°46°43°46°
Curve17 ft right11 ft——
Hang time5.6 s5.7 s——
Proximity99 ft53 ft——

★ 6-iron personal best. The arrow on the curve panel points right. Club speed isn't on the screen: at a typical 6-iron smash of ~1.38–1.40, 107 mph of ball speed means about 76–78 mph of club speed, just under the LPGA average (78 mph).

What it means: the speed is LPGA-level and the peak (27 yds) is already a tour-height peak. The extra 3–6° of launch is costing distance: the energy goes up instead of forward. With the same speed and a 17° launch, the carry should reach about 150–153 yds, the LPGA average.

3 Timing & tempo — measured from the video

30 frames per second, so each time is accurate to about ±0.03 s. Takeaway starts at 8.30 s, the top is at 8.90 s, and impact is at 9.13 s (the ball is gone in the next frame).

GroupBackswingDownswingRatio
André (6-iron #3, today)~0.60 s~0.23 s~2.6:1
André (6-iron #2, Oct 18)~0.53 s~0.27 s~2:1
André (6-iron #1, Oct 6)~0.45–0.6 s~0.23–0.3 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 s3:1

Tour figure: John Novosel, Tour Tempo. One frame either way at the top moves the ratio between ~2.3:1 and ~3:1.

What it means: this is his best 6-iron tempo so far: a slower, fuller backswing with a fast 0.23 s downswing, much closer to the tour's 3:1. That rhythm probably helped the extra ball speed.

4 The reference frame — how this swing was measured

Reference frame
  • Grid: each square is about 5 inches (48 px). It's scaled from his body size and the alignment sticks in the frame, so treat distances as ±1 inch.
  • Vertical and horizontal center lines (light green): fixed references for balance, spine and height.
  • Two corner diagonals (green): they cross at the frame's center and give a fixed perspective scaffold.
  • Depth rays (yellow, dashed): drawn from the vanishing point of the target-line sticks. Anything that moves along these rays is moving toward the target (into the picture), not sideways.
  • Address references: the white line is the top of the cap and the light-green line is the back of the head. The red trail is the head path and the yellow trail is the hands' path, frame by frame.
  • Body points were tracked automatically on every frame (150 frames, 6.5–11.5 s), then checked by eye at each key position.

5 Swing sequence

Nine key positions, filmed down-the-line from behind the hands. The target is straight into the picture.

Photo 1 · Addresst 8.17s · frame 50
Photo 2 · Takeawayt 8.47s · frame 59
Photo 3 · Lead arm parallelt 8.60s · frame 63
Photo 4 · Topt 8.90s · frame 72
Photo 5 · Arm parallel (down)t 9.03s · frame 76
Photo 6 · Deliveryt 9.10s · frame 78
Photo 7 · Impactt 9.13s · frame 79
Photo 8 · Releaset 9.23s · frame 82
Photo 9 · Finisht 10.17s · frame 110

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

6 Position-by-position biomechanics

Club check

Clubhead

The "6" on the sole, shown to the camera at 0:18 after the swing. Logged as the 6-Iron, report #3. Location confirmed by the video's GPS: Mariners Point Golf Center.

Photo 1 — Address Good

  • Feet parallel to the white feet-line stick, ball just forward of center, hands slightly ahead of the ball.
  • Athletic iron posture: knees flexed, back straight, arms hanging under the shoulders.

Photo 2 — Takeaway Good

  • One-piece start: hands, arms and club move away together.
  • The head is already beginning to sink, the first hint of the dip.

Photo 3 — Lead arm parallel Good width

  • Wide arc, the wrists setting on time.
  • Trail knee keeps its flex, and the hips turn without sliding.

Photo 4 — Top Full turn

  • Full shoulder turn, hands high, shaft just short of parallel. A good length for a 6-iron.
  • Head about 3 in lower than at address and ~3 in toward the ball line.
  • Hips about 2 in away from the ball: they turn, they don't push in.

Photo 5 — Arm parallel (down) Good

  • The lower body starts the downswing and the wrist angle holds.
  • The hands drop on a slightly inside path (yellow trail).

Photo 6 — Delivery Solid

  • The club comes from the inside, with the arms in front of the chest.
  • Trail heel starting to release, on time.

Photo 7 — Impact Watch the head

  • Hands come back to their exact address spot (within half an inch).
  • Head is ~6 in lower than at address. That's the largest dip in the logbook.
  • Hips hold their depth (~1 in away from the ball): no early extension, for the second report in a row.

Photo 8 — Release Full extension

  • Both arms extend down the target line and the chest keeps turning.

Photo 9 — Finish Excellent

  • Tall and balanced on the lead leg, trail foot up on its toe, belt buckle facing the target.
  • Held, as in every report.

Overlay — head at address, top and impact

Measure (vs address)TopImpact6-iron #2 (top / impact)Reading
Head, down~3 in~6 in~3 / ~5 inFix largest dip in the log
Head, toward the ball (in the picture)~3 in~2 in— / ~2 inDepth? see note
Hips, toward the ball−2 in (away)−1 in (away)heldGood no early extension
Hands at impact vs address—< 0.5 in—Good back to the same spot

Depth note: from behind, part of the head's sideways shift runs along the depth rays, so it mixes "toward the ball" with "toward the target". A face-on clip would split the two (see section 10).

7 Where the 6-iron sits in the bag

Club (best report)TotalCarryBall speedLaunchCurve
5-Iron · Oct 2169 yds159 yds108 mph19°20 ft
6-Iron · today150 yds146 yds107 mph20°17 ft
7-Iron · Oct 14147 yds144 yds104 mph22°0 ft

Heads-up: the 6-iron carries only 2 yards more than the 7-iron (146 vs 144) but 13 less than the 5-iron. The normal gap between irons is 10–15 yards. The ball speed is almost the same as the 5-iron (107 vs 108 mph), so the gap is a launch problem, not a speed problem: 20° is a 7-iron launch. Bringing it down to 16–18° should open the gap above the 7-iron.

8 Diagnosis

  1. Speed is up: 107 mph is his 6-iron best, and the hands deliver the club back to their address spot.
  2. Launch too high (20°): better than 23° on Oct 6, but still 3° above LPGA and 6° above PGA. That points to too little forward shaft lean at impact.
  3. The head dips ~6 inches, mostly during the downswing (3 in at the top, 6 in at impact). The body has to stand up out of that dip, and the hands flip to save it, which adds loft.
  4. Good and holding: no early extension. The hips stay back for the second report in a row.
  5. Tempo ~2.6:1, his best 6-iron rhythm so far.
  6. Curve 17 ft right: a mild fade or push. One swing can't say which; a face-on clip of the club path would.

Confidence: high on ball flight (range screen) and tempo (measured frame by frame); moderate on head and hip distances (grid scaled from body size and sticks, ±1 inch); low on the toward-ball vs toward-target split (needs a second angle).

9 Next steps — keep it simple

Priority 1 · Stay tall

Cap-on-the-line check

Same camera spot. Keep the top of the cap on the white address line until the ball is gone, for 10 balls.

Feel: "chest over the ball, knees keep their flex."

Priority 2 · Launch

Hands-ahead punch

Hit five three-quarter 6-irons with the hands ahead of the ball at impact and a short, low finish. Watch the screen: aim for 16–18° launch.

Lower launch with the same speed means more carry.

Keep · Tempo

Today's rhythm

Whatever count was in his head today, keep it. 2.6:1 is his best 6-iron tempo.

Slow back, fast through: it matched his best ball speed.

Keep

Hips back

Back pockets stay on their address line through impact, as they did today.

Two reports in a row with no early extension.

10 Limitations & next capture

Next capture: (1) the same down-the-line spot, plus (2) a face-on clip at chest height, square to the feet stick, to read shaft lean and the right curve, (3) 3–5 balls for an average, and (4) André's height, to lock the grid scale.