The Scratch Project · On-Course Reference
WEDGE MATRIX
Page 1 of 8
Phase 1 · Month 1
⚠️ Fill in YOUR Mevo-verified carry distances only
4 × 4 Scoring Zone — Carry Distances (yds)
| Swing Length |
PW (46°)
Pitching |
GW (50°)
Gap |
SW (54–56°)
Sand |
LW (58–60°)
Lob |
Full (100%)
Lead arm fully extended
|
___ yds |
___ yds |
___ yds |
___ yds |
¾ swing (9 o'clock)
Lead arm parallel to ground
|
___ yds |
___ yds |
___ yds |
___ yds |
½ swing (8 o'clock)
Hands at hip height
|
___ yds |
___ yds |
___ yds |
___ yds |
¼ swing (7 o'clock)
Hands below hip height
|
___ yds |
___ yds |
___ yds |
___ yds |
All distances = CARRY only — not total. Verified on Mevo Gen2 with your competition ball under calm conditions.
Average 5+ shots per data point. Rebuild this matrix every 6 months or after any coach-directed swing change.
How to use this matrix on-course
Know your distance → pick the row (swing length) and column (club) that matches. Always carry —
never guess total. From rough, reduce carry by 10–20% before entering the matrix.
The 40–70 yard danger zone
This is the hardest distance band in golf. Never lay up into it. Your lay-up target
should always land outside this zone — either inside 40 yds or beyond 80 yds.
The Scratch Project · Phase 1 · Month 1
Page 1 — Wedge Matrix
The Scratch Project · On-Course Reference
DISTANCES & DECISIONS
Page 2 of 8
Phase 1 · Month 1
Iron Carry Distances
| Club |
My carry |
Typical 10 HCP |
| 4-iron | ___ yds | ~195 |
| 5-iron | ___ yds | ~185 |
| 6-iron | ___ yds | ~175 |
| 7-iron | ___ yds | ~165 |
| 8-iron | ___ yds | ~155 |
| 9-iron | ___ yds | ~140 |
| PW | ___ yds | ~125 |
| 3-wood | ___ yds | ~215 |
| Driver | ___ yds | ~240 |
Carry only. Your Mevo numbers override the typical column entirely.
Short Game Shot Selector
| Shot |
When to use |
Club |
| Bump & run |
Tight lie · firm ground · plenty of green |
7–PW |
| Chip |
Short grass · moderate green |
PW, GW |
| Pitch |
Need height · soft landing needed |
SW, LW |
| Flop |
Tight pin · must stop quickly |
LW 60°+ |
Layup vs. Attack
| Scenario |
Go if |
Lay up if |
| Par-5 in 2, no penalty |
75%+ |
<75% |
| Par-5 in 2, water |
90%+ |
<90% |
| Dogleg carry cut |
80%+ |
<80% |
| Approach over water |
85%+ |
<85% |
Gut feel overestimates confidence by 15–25%. When in any doubt — lay up.
Lay up to your best proximity distance, never to a random iron.
The Scratch Project · Phase 1 · Month 1
Page 2 — Distances & Decisions
The Scratch Project · On-Course Reference
WIND
Page 3 of 8
Phase 1 · Month 1
Tour Caddie Wind Formula
INTO WIND: Add the wind speed as a percentage to yardage
20 mph headwind · 150 yds needed → +20% → play 180 yds
10 mph headwind · 130 yds needed → +10% → play 143 yds
DOWNWIND: Subtract half the headwind percentage
20 mph tailwind · 150 yds needed → −10% → play 135 yds
10 mph tailwind · 160 yds needed → −5% → play 152 yds
CROSSWIND: Apply ~50% of equivalent headwind adjustment
20 mph crosswind → treat as ~10 mph headwind = +10%
Wind Adjustment Table — At Common Yardages
| Wind |
INTO
adjustment |
DOWN
adjustment |
At 130 yds |
At 150 yds |
At 175 yds |
| 10 mph |
+10% |
−5% |
+13 / −7 |
+15 / −8 |
+18 / −9 |
| 15 mph |
+15% |
−7.5% |
+20 / −10 |
+23 / −11 |
+26 / −13 |
| 20 mph |
+20% |
−10% |
+26 / −13 |
+30 / −15 |
+35 / −18 |
| 25 mph |
+25% |
−12.5% |
+33 / −16 |
+38 / −19 |
+44 / −22 |
| 30 mph |
+30% |
−15% |
+39 / −20 |
+45 / −23 |
+53 / −26 |
Non-negotiable rule
Apply the wind formula on every approach over 100 yards when wind exceeds 10 mph.
No exceptions. The formula must become automatic by Round 20.
Key principle
Headwinds cost more than tailwinds save. Always over-compensate into wind.
Under-compensating into a headwind is the most common amateur mistake in windy conditions.
The Scratch Project · Phase 1 · Month 1
Page 3 — Wind
The Scratch Project · On-Course Reference
CONDITIONS
Page 4 of 8
Phase 1 · Month 1
Mid-Iron Wind — 100–175 Yard Zone
| Distance |
10 mph Head |
20 mph Head |
10 mph Tail |
20 mph Tail |
| 100–120 yds |
+1 club
or ¾ up |
+1.5 clubs |
−½ club |
−1 club |
| 120–150 yds |
+1 club |
+2 clubs |
−½ to 1 |
−1 club |
| 150–175 yds |
+1.5 clubs |
+2.5 clubs |
−½ to 1 |
−1 to 1.5 |
This zone is your highest strokes-gained loss area. Prioritise wind adjustment here above any other yardage band.
Other Conditions Adjustments
±1–2 yds
🌡️ Temperature
Per 10°F from 70°F. UK average 50°F = approximately −5 yds on carry.
+1 yd / ft
⬆️ Uphill
Add the elevation gain in feet directly to required yardage.
−0.5 yd / ft
⬇️ Downhill
Subtract half the elevation drop from required yardage.
−10 to −20%
🌿 From Rough
Deep rough −20%, light rough −10%. Less spin, more roll on landing.
+5–8 yds
🏖️ Firm / Dry
Land short, let it run. Aim back of green, not at flag.
Fly to flag
🌧️ Soft / Wet
Greens hold on landing. Aim directly at flag. Take one extra club.
Combining adjustments
Wind + elevation + lie all stack. In a 20 mph headwind, playing uphill to a soft green:
add wind (+20%) + add elevation, then land at flag. Work through each factor in order.
The Scratch Project · Phase 1 · Month 1
Page 4 — Conditions
The Scratch Project · On-Course Reference
ROUTINES
Page 5 of 8
Phase 1 · Month 1
Pre-Shot Routine — Every Full Shot
1
Read & Decide — behind the ball
Assess lie · wind · yardage · shot shape. Pick ONE precise target. All analytical thinking stops the moment you leave this spot.
2
Trigger Breath
One slow, deliberate exhale. This is the neurological switch from analytical to athletic mode. Non-negotiable on all pressure shots.
3
One Purpose Practice Swing
Rehearse the exact feel required — tempo and sensation only, not mechanics. Smooth and confident. One swing only.
4
Approach & Align
Walk in from behind on target line. Set club face first → feet → hips → shoulders. One look to confirm.
5
One Trigger Word → Execute
Single cue word: "smooth" / "target" / "tempo". Pull trigger within 2–3 seconds. No new thoughts.
Abort Rule
If you feel uncommitted at address — step away completely and restart the routine from Step 1.
An uncommitted swing produces a poor shot more than 90% of the time.
Putting Routine — Every Putt
1
Read from the Low Side
Walk the low side first. Read break from behind the hole, then from behind the ball. Commit fully to a read before approaching.
2
Set an Intermediate Target
Pick a spot 6–12 inches in front of the ball on your chosen start line. Aim your putter face there, not at the hole.
3
Two Practice Strokes — Eyes on Hole
Take two rehearsal strokes while looking directly at the hole. Calibrates feel naturally, like throwing a ball.
4
Sole · Look · Go
Set up to the ball · one look at the hole · eyes back to ball · stroke within 2–3 seconds. Never hesitate.
Speed Rule
On slippery or fast greens: 80% of focus on pace, 20% on line. A miss on the correct
line is always a good putt. A miss on the wrong pace is never recoverable.
The Scratch Project · Phase 1 · Month 1
Page 5 — Routines
The Scratch Project · On-Course Reference
SHORT GAME & STRATEGY
Page 6 of 8
Phase 1 · Month 1
Short Game Routine — Every Greenside Shot
1
Assess All Variables
Lie (tight / fluffy / buried / slope) · landing zone available · green to work with. Decide shot type first, then select the club for that shot. Never the other way around.
2
Pick a Precise Landing Spot
Not a zone — a specific mark on the green where the ball must land. A blade of grass, a discolouration, a pitch mark. This is your target, not the hole.
3
Feel-Based Practice Swings (2–3)
Take practice swings while looking at your landing spot, not the ball. Feel the exact length and pace of the swing required to reach that spot.
4
Visualise the Full Shot
See the ball flight, the landing, and the roll all the way to the hole. Complete visualisation primes commitment and prevents deceleration at impact.
5
Walk In and Execute With Conviction
Set up and go without hesitation. Deceleration is always caused by doubt, never by technique. Commit fully or restart the routine.
Hole Type — Quick Strategy Rules
PAR 3
- ▸Aim fat side — never attack a tucked pin
- ▸Always take enough club — par 3s play long
- ▸Identify your bail-out zone before hitting
- ▸Bogey is acceptable. Double bogey is not.
PAR 4
- ▸Long par-4: plan for bogey from the tee
- ▸Keep tee shot in play above everything else
- ▸Aim using dispersion cone, not the flag
- ▸Short par-4: only attack if short game is sharp
PAR 5
- ▸Lay up to your best proximity distance
- ▸Birdies come from wedges, not hero shots
- ▸Conservative long game, aggressive short game
- ▸Never lay up to the 40–70 yd danger zone
The Scratch Project · Phase 1 · Month 1
Page 6 — Short Game & Strategy
The Scratch Project · On-Course Reference
NEVER & ALWAYS
Page 7 of 8
Phase 1 · Month 1
🚫 Never Do These
-
✗
Attack a sucker pin. One hero shot erases three good shots. Always take the fat side of the green.
-
✗
Under-club to a green with carry trouble. 65% of amateur misses are short. Club to the back of the green.
-
✗
Skip the wind adjustment. 10 mph into = +15 yds at 150. Always apply the formula above 10 mph.
-
✗
Change your club at address. If a new thought arrives — step away, restart the routine completely.
-
✗
Play heroically from trouble. Target from any trouble shot is: back in play, best possible position. Not birdies.
-
✗
Shorten the pre-shot routine when nervous. The routine exists precisely for when you are nervous. Never abbreviate it.
-
✗
Lay up to the 40–70 yard zone. The hardest distance band in golf. Lay up inside 40 or beyond 80 yards.
-
✗
Carry a bad shot into the next one. Accept it, move forward, and start the next routine completely fresh.
✅ Always Do These
-
✓
Aim using your dispersion cone. The flag is a reference, not your target. Aim where the centre of your cone lands safely.
-
✓
Apply the wind formula above 10 mph. On every approach over 100 yards. Automate this until it requires no thought.
-
✓
Complete the pre-shot routine. Every shot. Including tap-ins. The routine is your protection against double bogeys.
-
✓
Hit the percentage shot from trouble. Sideways or backwards to a good lie is always correct. Bogey is the target.
-
✓
Club up as your default. Until Mevo distances are fully verified, add one club to whatever feels right.
-
✓
Pre-select your miss direction. Before every approach — which side of the green is the safe miss? Aim slightly toward it.
-
✓
Count and classify your doubles. After every round: decision error, execution error, or bad break? Target under 3 per round.
-
✓
Trust the number and the read. The club and line chosen after a complete routine is always correct. Never second-guess at address.
The Scratch Project · Phase 1 · Month 1
Page 7 — Never & Always
The Scratch Project · On-Course Reference
JUNE TARGETS
Page 8 of 8
Phase 1 · Month 1
Month 1 Targets
| Metric |
Target |
Day 1 |
| 6-ft make rate | 75%+ | ___ |
| 20-ft lag — past hole | <18 in | ___ |
| Chips inside 8 ft (10) | 6 / 10+ | ___ |
| Double bogeys / round | <3 | ___ |
| Routine compliance | 100% | ___ |
| HCP end of June | ~9 | 10 |
June Drill Focus
- ▸Make 100 putts at 4 ft — three times per week, every week in June
- ▸Clock Drill at 6 ft — both weekly sessions, without exception
- ▸Shot selection hierarchy — apply Guide 02 on every greenside shot
- ▸Phase 1 rule: Don't try to fix anything. Capture Arccos data only and let it show you where the leaks are.
Model Week — Phase 1
| Day |
Session |
Focus |
| Mon | Short game | Putting · chipping · clock drill |
| Tue | Range session | Iron strike · PSR · driver |
| Wed | Rest / mobility | 6-min morning mobility only |
| Thu | 18 holes scored | Full tracking · full routine |
| Fri | Rest + review | SG data · double bogey audit |
| Sat | 18 holes — comp | No mulligans · commit shapes |
| Sun | Full rest | Recovery after two rounds |
Post-Round Double Bogey Audit
Complete after every round. D = Decision error | E = Execution error | B = Bad break
| Hole |
What happened |
Type |
| ____ |
________________________________ |
D / E / B |
| ____ |
________________________________ |
D / E / B |
| ____ |
________________________________ |
D / E / B |
| ____ |
________________________________ |
D / E / B |
The Scratch Project · Phase 1 · Month 1
Page 8 — Targets & Week