How to Fix an Outside-In Putting Stroke with a Cardboard Box

If you struggle with an outside-in putting stroke, this simple drill can help you fix it fast. Place a small cardboard box just outside your putting path on the Delta Putt mat. As you make your stroke, the goal is to avoid hitting the box with your putter. If you do, it’s a clear sign your stroke is coming outside-in and pushing the ball off line. This visual feedback helps you train a smoother, more neutral path so the putter can move naturally through the ball. With just a few focused reps, you’ll start to feel the difference and build a more consistent, reliable stroke.

For more help on your putting game, be sure to pick up a Delta Putt Max. Click here to shop and get instant feedback on how to improve your putting.