How Golf Ball-Marker Rules Work Explainer
Before lifting a ball on the putting green, a golfer must mark its spot by placing a ball-marker immediately behind or next to the ball, or by holding a club on the ground beside it. A small coin or purpose-made marker is common because it identifies the location without interfering much.
The ball must be replaced on its original spot before the marker is removed. If another player's marker interferes with a stance or line, it may be moved one or more clubhead lengths to the side using a fixed reference, then returned by reversing the same procedure.
Accidentally moving a ball or marker on the putting green usually carries no penalty, but the ball or marker must be replaced. Deliberately lifting without first marking, using an improper object as the marker, or playing from a wrong place can lead to a penalty depending on what occurred next.
Good marking is about preserving a precise location. Players should place the marker close, lift the ball cleanly, and reverse any temporary move before putting. The routine looks ceremonial, but it protects every player's right to the same lie and position the ball had before it was lifted.
An artificial object such as a coin or purpose-made marker is the normal choice; a club may also mark the spot.
Immediately behind or next to the ball.
Usually no, but the ball or marker must be replaced.
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