No doubt you have as, hitting the ground before tha ball is quite a common occurrence.

So what causes you to duff a putt?
There are 2 things that cause you to hit the ground before the ball when putting.

1. You moved your head and looked up
2. You were too wristy.

A putt is a shoulders stroke so make sure you keep the wrists out of the putting stroke altogether.

Good Golfing

Anne