Start Putts on Line: The Ruler Drill

Take it to practice.

Lay a thin yardstick flat on a relatively level putting surface. Aim it along your intended line and center the ball near the back end. Use your normal setup and stroke, keeping the ball on the stick until it rolls off the far end.

Try five and count your successful far-end exits. Then remove the yardstick and putt along that same line. No hole needed—use it for practice or a quick pre-round check.