What's the ruling?
It's found in Rule 17-4. Carefully remove the flagstick. If you've been living right, the ball will drop into the cup and your previous shot is considered holed.
But if you've been a bad boy or girl and, somehow, some way, the ball fails to drop into the cup, you must place the ball on the lip of the cup and putt out.
(The answer to this question only applies to shots from off the green because it's a penalty to leave the flagstick in on shots from on the putting surface.)

