When you get near the green you usually take 3 clubs with you. You will use a wedge club to chip onto the green. When you get on the green, you will drop the wedge on the ground and take your putter and then putt the ball. When you are down putting, you will leave the wedge behind and then you lose it. If you notice it a couple of holes later, you have to double back to try and find it. If it’s a valuable club, whoever finds it might now give it back. Then you lose your wedge. They can run from $100 up to $250