Birdie GAiSwing Analysis
6-Iron · Full Swing Analysis

André Rennes

A frame-by-frame review of André's 6-iron swing from the October 25 session at Mariners, hit off the mat with the full ball-flight readout from the range screen. It's report #7 for this club. It re-reads the same swing and screen as reports #3–#6 with the Birdie GAi scorecard and the full reference frame, and closes with simple next steps.

PlayerAndré Rennes (right-handed)
Club6-Iron · report #7
LocationMariners Point Golf Center, Foster City, CA
Footage1 swing · down-the-line + range screen
Session dateOctober 25, 2026

1 Executive summary

Bottom line: a strong 6-iron that ties his personal bests ★: 150 yards total, 146 carry and 107 mph of ball speed. That ball speed is only 2 mph under the LPGA Tour 6-iron average (109 mph), and the carry is 6 yards short of the LPGA average (152). The launch is a little high at 20° (LPGA 17.1°), but the peak is fine at 81 ft (27 yds) against a 25-yard LPGA average. This is report #7 of 10 for the 6-iron. This was a range session.

The scorecard has several good readings. The hips stay back (about 0.9 in away from the ball at impact, rear of the hips about 0.4 in inside the tush line), the hands return to their address spot (within 0.6 in), and the tempo is 2.6:1, in the good band and his best 6-iron ratio. The constant is still there: the head sinks about 6 in by impact.

Strength

Speed, hips and tempo

107 mph ball speed (ties his best ★), hips staying back, hands back at their address spot, and a 2.6:1 tempo.

Priority 1

Stay tall

The head is about 6 in lower at impact. Keep the cap near its address line so the chest doesn't sink toward the ball.

Priority 2

Launch a little lower

A 20° launch is 3° above the LPGA average. A touch more hands-ahead delivery should bring it toward 17–18° and add carry.

2 Ball flight — range screen

Range screen readout
MetricAndré (Oct 25)André #1 (Oct 6)LPGA Tour avgPGA Tour avg
Ball speed107 mph ★ ties best103 mph109 mph127 mph
Carry146 yds ★ ties best140 yds152 yds183 yds
Flat carry144 yds———
Total150 yds ★ ties best149 yds——
Launch angle20°23°17.1°14.1°
Apex81 ft (27 yds)87 ft (29 yds)25 yds30 yds
Landing angle44°46°46°50°
Curve17 ft (right)11 ft——
Hang time5.6 s5.7 s——
Proximity99 ft53 ft——

★ = personal best for the 6-iron, tied with reports #3–#6 (same swing and screen). The apex tile is partly hidden by a shadow, so 81 ft is read as the apex from its position and unit. The curve arrow is small; it is read as right, as in the earlier logbook entries. Club speed isn't on the screen: at a typical iron smash of ~1.38–1.40, 107 mph of ball speed means about 76–78 mph of club speed (LPGA average 78, PGA Tour 92).

What it means: Ball speed is close to the LPGA level, so speed is not what holds back the carry. The ball launches 3° higher than the LPGA average (6° higher than the PGA Tour) and lands at 44°, a little softer than the LPGA 46°. The peak (27 yds) is normal. A somewhat lower launch with the same speed would turn some height into distance.

3 Timing & tempo — measured from the video

30 frames per second, so each time is accurate to about ±0.03 s. Takeaway starts at about 8.30 s (frame 99), the top is at 8.90 s (frame 117) and impact is at about 9.13 s (frame 124).

GroupBackswingDownswingRatio
André (6-Iron #7, Oct 25 session)~0.60 s~0.23 s~2.6:1
André (6-Iron #1, Oct 6)~0.45–0.60 s~0.23–0.30 s~2:1
André (6-Iron #2, Oct 18)~0.53 s~0.27 s~2:1
André (6-Iron #3, Oct 26)~0.60 s~0.23 s~2.6:1
André (3-Wood #1, Oct 24 session)~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. Reports #4–#6 used this same swing, so they show the same timing. One frame either way moves the ratio between about 2.3:1 and 3:1.

What it means: 2.6:1 sits inside the good band (2.5–3.5:1) and is the closest 6-iron ratio to the Tour 3:1. The downswing (0.23 s) is a touch quicker than the Tour 0.27 s, and the backswing (0.60 s) is shorter than the Tour 0.80 s. The rhythm is smooth, with no rushed top.

4 The reference frame — how this swing was measured

Reference frame
  • Grid: each square is about 5 inches (~51 px). It's scaled from his body size in the frame because his height wasn't given, so treat distances as ±1 inch.
  • Center lines: a vertical line through the centre of his stance and a horizontal line through the ball line. They are fixed references for balance, height and sway. The center lines and the corner-to-corner diagonals cross at his belt buckle at address, and the diagonals add a fixed perspective scaffold for depth.
  • Depth rays (yellow, dashed): the two target-line sticks and the mat edges extended to the horizon. Anything moving along these rays is moving toward the target (into the picture), not sideways.
  • Address references: the white line is the cap line (head height) and the dashed orange line is waist height. The dashed light-blue lines mark shoulder and knee height at address. The dashed red tush line is the back of the hips at address. The red trail is the head path and the yellow trail is the hands' path.
  • Body measures: head height and waist height changes, plus shoulder and hip rotation vs address. Rotation is a visual estimate (about ±10–15°). X-factor is shoulder turn minus hip turn at the top.
  • Tracking: body points were tracked automatically on 210 frames, then checked by eye at each key position. The camera stayed still: the background moved less than 0.2 px (median).

5 Swing sequence

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

Photo 1 · Addresst 8.23s · frame 97
Photo 2 · Takeawayt 8.57s · frame 107
Photo 3 · Lead arm parallelt 8.63s · frame 109
Photo 4 · Topt 8.90s · frame 117
Photo 5 · Arm parallel (down)t 9.03s · frame 121
Photo 6 · Deliveryt 9.10s · frame 123
Photo 7 · Impactt 9.13s · frame 124
Photo 8 · Releaset 9.20s · frame 126
Photo 9 · Finisht 10.13s · frame 154

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 clubhead sole was shown to the camera between 15.5 and 18.5 s. All three crops read the same digit, a 6 with its loop at the bottom and the small bar beneath it (high confidence). Cross-check: the 146 carry and 150 total match his 6-iron best exactly, and are well beyond what a 9-iron would carry given his 144-yd 7-iron. Logged as the 6-Iron.

Photo 1 — Address Good

  • Feet parallel to the target-line stick, with the near-vertical stick just inside the ball.
  • Athletic iron posture: knees flexed, arms hanging, hands just ahead of the ball, belt buckle at the center of the frame.
  • The cap line, tush line and shoulder and knee lines are set here as the references for every later frame.

Photo 2 — Takeaway Head sinks early

  • Hands, arms and club leave together. Hands are already about 9.7 in from their address spot.
  • The head is already ~4.6 in lower than at address and ~2.6 in toward the ball line. The dip starts in the takeaway.
  • Hips stay back (~1.8 in away from the ball) and rise about 1.2 in.

Photo 3 — Lead arm parallel Watch

  • Hands ~23 in from their address spot, wrists setting, wide arc.
  • Head still ~4.6 in below its address height and ~3 in toward the ball line.
  • Hips keep sliding away (~1.9 in), so there's no sway into the ball.

Photo 4 — Top Full turn

  • Shoulders turn about 85° and hips about 40° (±10–15°), an X-factor of about 45°.
  • The head has come back up to ~2.2 in below address, and ~2.8 in toward the ball line (see the depth note).
  • Hips are ~1.7 in away from the ball and ~0.6 in higher than at address.

Photo 5 — Arm parallel (down) Good

  • The lower body starts down: hips are back to about address height (~0.1 in up) and still ~1.0 in away from the ball.
  • Hands are ~26 in from their address spot and dropping on the way down (yellow trail).
  • The head sinks again to ~4.1 in below address.

Photo 6 — Delivery Good

  • Hands are close to home, ~4.6 in from their address spot, with the arms in front of the chest.
  • Hips are still ~0.9 in back, and the head is ~5 in below address.

Photo 7 — Impact Watch the head

  • Hands return to their address spot (within 0.6 in). Good
  • Head is ~5.9 in lower than at address (fix band is above 4 in) but only ~1.5 in toward the ball line.
  • Hips stay back: ~0.9 in away from the ball, with the rear of the hips ~0.4 in inside the tush line. Hips rise ~1.0 in (watch).
  • Estimated rotation: hips open about 35°, shoulders about 15°, so the hips lead.

Photo 8 — Release Good

  • Both arms extend down the line and the chest keeps turning. Hands are ~7.8 in from the address spot.
  • The head reaches its lowest point here, ~6.8 in below address, and hips are ~1.9 in back.

Photo 9 — Finish Excellent

  • Tall and balanced on the lead leg, trail foot up on its toe, belt buckle to the target.
  • The head is ~4.4 in above its address height, so the dip is fully recovered. The finish is held.

Overlay — head at address, top and impact

Measure (vs address)TopImpact6-Iron #2, Oct 18 (top / impact)Reading
Head, down~2.2 in~5.9 in~3 in / ~5 inFix the dip is the same in every 6-iron report
Head, toward the ball~2.8 in~1.5 in— / ~2 inGood at impact, see depth note
Hips, toward the ball~1.7 in (away)~0.9 in (away)— / hips held depthGood no early extension
Tush line gap (rear of hips)—~0.4 in inside the line—Good stays on the line
Hips, rise (waist height)~0.6 in~1.0 in— / —Watch small rise
Hands vs address~38.8 in~0.6 in— / —Good back to the same spot
Shoulder turn (estimate)about 85°about 15° open— / —Info ±10–15°
Hip turn (estimate)about 40°about 35° open— / —Info hips lead the shoulders
X-factor (shoulders minus hips)about 45°—— / —Info good coil
Tempo (back / down)0.60 s0.23 s0.53 s / 0.27 sGood 2.6:1

Depth note: From behind, the head's ~1.5–2.8 in shift toward the ball line sits partly along the depth rays, so it mixes "toward the ball" with "toward the target". One camera can't split the two. A face-on clip of the next swing will settle it (see Limitations).

7 Where the 6-iron sits in the bag

Club (best report)TotalCarryBall speedLaunchCurve
Driver · Oct 7241 yds213 yds129 mph16°38 ft
3-Wood · Oct 24200 yds172 yds121 mph10°36 ft
4-Iron · Oct 7183 yds167 yds110 mph20°39 ft
5-Iron · Oct 2169 yds159 yds108 mph19°20 ft
6-Iron · Oct 25 ★150 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) and totals only 3 more (150 vs 147). Against the 5-iron the gap is large: 13 yards of carry and 19 of total, even though the ball speed differs by just 1 mph (107 vs 108). So the gap isn't about speed. Each club has one swing in the logbook, so the 5-iron may simply have been a very good one. A few more balls with the 5-, 6- and 7-iron will show the true gaps.

8 Diagnosis

  1. Speed is there: 107 mph of ball speed ties his best and is 2 mph under the LPGA average. The 146 carry is 6 yards short of the LPGA 152.
  2. Launch is high: 20° vs 17.1° (LPGA) and 14.1° (PGA). The peak (27 yds) and landing angle (44°) are normal, so the extra launch is the main thing to trim for distance. Curve is a small 17 ft, to the right.
  3. The head dips ~5.9 in at impact and ~6.8 in at release (fix band: above 4 in). It sinks ~4.6 in in the takeaway, recovers to ~2.2 in at the top, then sinks again on the way down.
  4. Hips stay back: ~0.9 in away from the ball at impact and ~0.4 in inside the tush line (good). The waist rises ~1 in (watch). Hands return to within 0.6 in of their address spot.
  5. Turn and sequence: shoulders about 85°, hips about 40°, X-factor about 45°. At impact the hips are about 35° open vs about 15° for the shoulders, so the hips lead.
  6. Tempo 2.6:1 (0.60 s / 0.23 s): good band, best 6-iron ratio, close to the Tour 3:1.
  7. Gapping: carry is only 2 yds over the 7-iron, a pattern to watch.

Confidence: high on ball flight (range screen) and tempo (measured frame by frame); moderate on head and hip distances (grid scaled from body size, ±1 inch); lower on shoulder and hip rotation (visual estimate, about ±10–15°) and on the toward-ball vs toward-target split (needs a second angle). The apex tile is partly hidden, and club speed is estimated.

9 Next steps — keep it simple

Priority 1 · Stay tall

Cap-on-the-line check

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

Feel: "chest over the ball, knees keep their flex." Goal: head dip under 4 in.

Priority 2 · Launch

Hands-ahead half swings

Hit 5 balls with a three-quarter swing, feeling the handle lead the clubhead through impact. Watch the screen for a launch of 17–18°.

A lower launch with the same ball speed turns height into carry.

Keep · Hips back

Back pockets on the line

Whatever he did with the hips on this swing: keep it. The rear of the hips stays on the red tush line through impact.

Zero early extension, as in the last two 6-iron swings.

Keep · Tempo

Same count

Keep the "back-2-3, down-1" rhythm that gave 2.6:1.

It's already the best 6-iron tempo in the logbook.

10 Limitations & next capture

Next capture: to sharpen the reference frame: (1) the same down-the-line spot, filmed in slow motion (120 or 240 fps) so the ball can be followed frame by frame, (2) a face-on clip at chest height, (3) 3–5 balls for an average, and (4) André's height, to lock the grid scale.