Our final set-up factor is the location of the ball relative to the golfer's sternum, or swing center. I don't evaluate ball position in terms of inches forward or back in the stance because stance width changes from player to player. The Pro's ball position with a 5-iron is three inches ahead of the center of the sternum.
Why It's Important Positioning the ball correctly ensures that the clubface is square at impact.
Common Fault Improper ball position is a leading cause of the slice, which results from contact with an open clubface. Many golfers play the ball too far back, never giving the clubface a chance to square up by impact. They simply hit the ball prematurely, with the clubface still open, thereby imparting slice-producing sidespin on the ball.