Most golfers are putting with a club two centimetres too long

The measurement nobody makes

Where your eyes sit decides where you aim

Set up over a putt with your eyes inside the ball line and you will tend to aim right of the target without ever knowing it. Set up with your eyes outside the line and the opposite happens. Since almost nobody checks this, a large share of golfers spend years compensating for an aim error with a compensating stroke, then blame their nerve when a short putt misses.

We measure eye position with a mirror and a laser on the lane, and the fix is usually length. A putter an inch too long pushes you upright and moves your eyes inside the line. Shortening it brings the eyes over the ball, flattens the lie requirement, and settles the aim without changing anything about the stroke.

Retail length is a warehouse decision

Thirty-four inches became standard because it was a convenient stocking length, not because it fits the average adult. The majority of putters we adjust here come down to somewhere between thirty-two and thirty-three and a half. Golfers routinely report that their stroke feels more repeatable within a few holes, which is what happens when your posture stops fighting the club.

Delivered loft, not stamped loft

A putter head has three or four degrees of loft on the specification sheet. What matters is the loft present at impact, which depends on shaft lean, ball position and how much the hands lead. Too little and the ball is driven into the surface and bounces; too much and it hops off the face and skids. On the lane we watch the first three feet of roll and adjust loft to remove the skid.

Head balance against your arc

Every stroke moves on an arc; the question is how much. A strongly arced stroke generally prefers a head with more toe hang, which lets the face rotate naturally. A straighter stroke prefers a face-balanced head. Getting this backwards produces a golfer constantly manipulating the face through impact.

We measure your arc on the lane rather than asking you to describe it, because the description and the measurement disagree more often than not.

Grip size and pressure

Larger putter grips quiet the hands and suit golfers whose wrists get involved. Thinner grips give more feel and suit golfers who putt with their fingertips. Neither is superior. We test both because it is a cheap change with a genuine effect on distance control.