Hi Nic,

There is no rule for this, but there is a great superstition in regards to this situation. Many golfers believe there is only room for 1 ball in the hole and that if there is a ball in the cup already, another will not go in. Of course, we all know it is not true, but superstitions run strong among golfers. Please take your ball out of the hole when you have putted out, it is the courteous thing to do. I know I will not putt if there is a ball in the hole already.