10-2. Stroke Play
a. Teeing Ground
The competitor who shall have the honor at the first teeing ground shall be determined by the order of the draw. In the absence of a draw, the honor should be decided by lot.
The competitor with the lowest score at a hole shall take the honor at the next teeing ground. The competitor with the second lowest score shall play next and so on. If two or more competitors have the same score at a hole, they shall play from the next teeing ground in the same order as at the previous teeing ground.
b. Other Than on Teeing Ground
When the balls are in play, the ball farthest from the hole shall be played first. If two or more balls are equidistant from the hole, the ball to be played first should be decided by lot.
Exceptions: Rules 22 (ball interfering with or assisting play) and 31-5 (four-ball stroke play).
c. Playing Out of Turn
If a competitor plays out of turn, no penalty is incurred and the ball shall be played as it lies. If, however, the Committee determines that competitors have agreed to play in an order other than that set forth in Clauses 2a, 2b and 3 of this Rule to give one of them an advantage, they shall be disqualified.
(Incorrect order of play in threesomes and foursomes stroke play — see Rule 29-3.)
(Playing stroke while another ball in motion after stroke from putting green — see Rule 16-1f.)
10-3. Provisional Ball or Second Ball from Teeing Ground
If a player plays a provisional ball or a second ball from a teeing ground, he shall do so after his opponent or fellow-competitor has played his first stroke. If a player plays a provisional ball or a second ball out of turn, Clauses 1c and 2c of this Rule shall apply.
10-4. Ball Moved in Measuring
If a ball is moved in measuring to determine which ball is farther from the hole, no penalty is incurred and the ball shall be replaced.