Does everyone on here believe this? I do.. 90% of misses that I see, are pool players undercutting the object ball. I think someone called it the "pro" cut by overcutting. A great drill to do everyday is place the object balls about 1/2" away from the middle of the end rail and cut the ball where it stays that 1/2" away all the way to the hole with the cue ball moving out about two diamonds and one diamond from the long rail. Then, do it again on the long rail. Our Diamond tables have 4.5" pockets and any more than 1/2" out, the ball will hang up. A great drill before you start playing.