Rule 3. Stroke Play
3-1. Winner
The competitor who plays the stipulated round or rounds in the fewest strokes is the winner.
3-2. Failure to Hole Out
If a competitor fails to hole out at any hole and does not correct his mistake before he plays a stroke from the next teeing ground or, in the case of the last hole of the round, before he leaves the putting green, he shall be disqualified.
3-3. Doubt as to Procedure
a. Procedure
In stroke play only, when during play of a hole a competitor is doubtful of his rights or procedure, he may, without penalty, play a second ball. After the situation which caused the doubt has arisen, the competitor should, before taking further action, announce to his marker or a fellow competitor his decision to invoke this Rule and the ball with which he will score if the Rules permit.The competitor shall report the facts to the Committee before returning his score card unless he scores the same with both balls; if he fails to do so, he shall be disqualified.
b. Determination of Score for Hole
If the Rules allow the procedure selected in advance by the competitor, the score with the ball selected shall be his score for the hole.If the competitor fails to announce in advance his decision to invoke this Rule or his selection, the score with the original ball or, if the original ball not one of the balls being played, the first ball into play shall count if the Rules allow the procedure adopted for such ball.
Note
A second ball played under Rule 3-3 is not a provisional ball under Rule 27-2.
3-4. Refusal to Comply with a Rule
If a competitor refuses to comply with a Rule affecting the rights of another competitor, he shall be disqualified
3-5. General Penalty
The penalty for a breach of a Rule in stroke play is two strokes except when otherwise provided.