Can a player repair a ball mark on the green without penalty?

A player is permitted to repair a ball mark on the green without incurring any penalty. This rule is grounded in the principle that maintaining the condition of the putting green is essential for the enjoyment and fairness of the game. The repair of ball marks is recognized as part of good etiquette in golf, helping to preserve the playing surface for all players.

There are no restrictions related to the proximity to the ball mark or the number of marks that can be repaired during a round. This allowance is intended to encourage players to act responsibly in caring for the course, ensuring it remains in optimal condition. While the other answers suggest varying penalties, they do not align with the established rules of golf regarding the maintenance of the green.