Can My Practice Golf Swing Cost Me A Stroke

Dear Golf Nut I have a question about taking a practice swing.  If you are taking a practice swing on a shot other than a tee shot, and accidentally hit your ball, what is the correct ruling?  Do you play it as it lies or are you allowed to replace it and hit again without incurring a penalty.  Thanks for the question, this is one that a lot of golfers miss when they are playing.Rule 18 of The Rules of Golf deals with a ball at rest moved.  Specifically 18-2 focuses on a ball moved by the player.  So let’s look at this rule.  And there are two decisions documented in the Rules that address both the tee box and on the rest of the course.

Rule 18-2 says that if a golf ball is in play and if the player, his caddie, or the equipment of the player causes the ball to move, the player incurs a penalty of one stroke.   Now let’s look at the decisions that clarify this.

Decision 18-2a/19 says that when a practice swing on the tee box causes the ball to move, there is no penalty and the golfer can replace the ball on the tee and hit his/her shot?  Why?  Well the ball was not in play.  As simple as that.

However anywhere else on the course, a practice swing that causes the ball to move is in violation of Rule 18-2a and must incur a penalty stroke.  Now one clarification on this ruling.  The practice swing does not count as a stroke in addition to the penalty stroke.  The rules recognize that the golfer was making a practice swing and was not intending to strike the ball.  However the golfer must replace the ball to where it was an incur a penalty of one stroke.

A simple rule that a lot of golfers miss or ignore.  Thanks for the question!