Your putter is probably fighting your stroke.
Putters get sold on looks, badge, and the pro who won with one. But four numbers — toe-hang, MOI, loft, and length — either match your stroke or quietly sabotage it. Buy by physics, not marketing.
The face has to return square. Balance decides whether it does.
Every stroke swings on a natural arc — the more your hands rotate, the more the face opens and closes. A putter's balance either cooperates or resists. Match them and the face returns square. Mismatch them and it returns open or closed — the ball starts offline before break, slope, or nerves ever get a vote.
"Forgiveness" is not a feeling. It's a moment of inertia.
Nobody strikes the center every time. An off-center hit twists the face about the head's center of gravity during the half-millisecond the ball is on it — starting the ball offline and bleeding distance. How much it twists is set by one number the marketing rarely leads with: MOI. Slide the strike off center and watch the two heads disagree.
Fit is physics. Buy the number, not the badge.
Match toe-hang to your arc
Not to the brand, the tour win, or the shape. Straight stroke → face-balanced. Arc → toe-hang.
Mallet ≠ auto-forgiving
Forgiveness is the MOI number, not the silhouette. Check the g·cm², not the outline.
Most amateurs' putters are too long
Extra length pushes your eyes inside the line and biases your aim before you move.
Loft exists for a reason
2–4° lifts the ball out of the tiny depression it rests in, so it rolls instead of hopping.
A fit putter only matters if your stroke repeats.
Perfect toe-hang can't save a stroke that returns the face somewhere new every time. Fit removes the equipment excuse — then reps build the repeatable stroke that makes the fit worth anything. Groove it at a true Stimp 10 on your PrimePutt mat until square is the only thing your hands know.
Get the mat PGA pros use →What this actually means for your putting.
Keep going — you just read Chapter 5.