If a player deliberately deflects or stops their ball in motion, what penalty do they incur?

When a player deliberately deflects or stops their ball in motion, they incur a general penalty. This is because intentionally interfering with the ball's movement goes against the rules of fair play in golf.

The general penalty in golf typically results in the player losing two strokes in stroke play or being assessed a loss of hole in match play. This penalty emphasizes the principle that players must allow the ball to run its course, reinforcing the integrity of the game.

In contrast, other potential options do not appropriately reflect the severity of the action. For instance, there are situations where players may not incur a penalty for incidental contact or unintentional actions, which differentiates between deliberate and accidental interferences. Understanding the ramifications of such actions helps maintain the spirit of the game, where players are expected to respect the rules and the natural course of play.