Answer: at impact of putter face with ball, is the putter face square to the line that you have picked- after reading the putt you want to make. I remember reading a “golf book” about 65 years ago (so I assume that it was written by Hogan) that basically said- read the putt, and then pick a “target spot” no more than 20″ in front of the ball, that if you roll over that spot will then take the ball towards the hole. SO YOU NEED TO READ PUTTS WELL, AND THEN WHEN YOU STROKE THE BALL YOUR PUTTER FACE IS SQUARE, AND ROLLS TO THE SPOT WHICH IS NO MORE THAN 20″ IN FRONT OF YOU.
So what is the most important? From the area of impact putter to ball, to the spot the ball leaves the putter face. Once the ball leaves the putter face, its path has been determined (UNLESS YOU SOMEHOW PUT A SPIN ON THE BALL AND NOT JUST A FORWARD ROLL). Remember Billy Mayfair!!
SEE NEXT BLOG FOR MORE INFO ON HOW TO BE SQUARE TO THE LINE ON EVERY STROKE.