Subject
to Law 26(c), if the striker plays a wrong ball and the
error is discovered before the first stroke of the next turn (but see Law
37(c)(3) for handicap play) to be started by playing
a correct ball, the error is rectified and the turn ends.
If the
error is rectified and was committed in the first stroke of one of the first
four turns of the game, the correct ball is placed on any unoccupied point
on either baulk-line as the striker chooses and the striker is deemed to
have played a stroke with that ball.
PLAYER
UNABLE TO PLAY CORRECT BALL
The game is restarted if the player
of the fourth turn of the game discovers, either before or after he plays a
stroke, that both his balls have been played into the game in the first two
turns of the game.
EXCHANGE
OF COLOURS If it is discovered after the first stroke of the fifth turn
of the game that both players have played a wrong ball in the first stroke
of every earlier turn of the game, the choice of balls under Law 8(a)
is reversed and play is deemed to have proceeded from the start of the game
accordingly.