This is the BCAPL / CSI official rule. This is their cue ball foul only rule. It went through changes in '12. What applies to your question is in rule 6.
Rule 7 is a little know rule in which the one in govern have set themselves up as god like, in that they have created a new way to loose a game. Yes, a new way to even loose at One Pocket. I did a video of this showing how you can loose and posted it up, so be careful playing by these rules.
I have not a clue how WPA plays this, most likely they do not have a rule, for their rules are wrote for referees and they would probably are schooled on this and would follow their cue ball foul only rules. I do not feel like searching through the vastness of their rules to try and find it. WPA does not govern over the game of OP, so their rules are not geared towards the game of OP. But they are making in roads into American OP for we see DCC and I believe the International OP going to WPA. I believe the in roads is in sponsorship money, correct me I am wrong.
Whitey
BCAPL / CSI
1-33 Disturbed Balls (Cue Ball Fouls Only) (AR p. 91)
1. During a game, it is not a foul if you accidentally touch or move a single stationary object ball with any part of your body, clothing or equipment, unless the disturbed ball has an effect on the outcome of the shot.
2. "Effect on the outcome of the shot" means that either the disturbed ball contacts any ball set in motion as a result of the shot, or that the base of any ball set in motion as a result of the shot passes through the area originally occupied by the disturbed ball. That area is defined as a circle approximately seven inches in diameter centered on the OFFICIAL RULES OF CUESPORTS INTERNATIONAL 34 position originally occupied by the disturbed ball (see Diagram 6).
3. If a disturbed ball has no effect on the outcome of the shot, your opponent has the option to leave the disturbed ball where it came to rest or to restore it to its original position before the next shot. If the disturbed ball is to be restored, a referee may restore it, your opponent may restore it, or you may restore it with your opponent’s permission. It is a foul if you touch or restore the disturbed ball without your opponent's permission.
4. It is a foul if a disturbed ball has an effect on the outcome of the shot. Your opponent has no restoration option.
5. If you disturb a single object ball and, in the same shot, commit a foul that is not related to the disturbed ball: you are penalized for the foul, and your opponent has the restoration option for the disturbed ball that was not involved in the foul.
6. If a single disturbed ball falls into a pocket with no effect on the outcome of a shot, your opponent has the restoration option. However, if the disturbed ball is designated by specific game rules as the game winning ball, it must be restored. If the game-winning ball is disturbed and falls into a pocket when there is an effect on the outcome of the shot, it is loss of game.
7. It is a foul if:
a. you disturb the cue ball;
b. you disturb more than one object ball;
c. a disturbed ball contacts any other ball;
d. you disturb a ball that is in motion.
Your opponent has no restoration option. If the game-winning ball is disturbed in conjunction with a violation of (a) through (d) and falls into a pocket, it is loss of game.
To put rule 7 into perspective. In playing 9=ball and you disturb a ball that say contacts the 9 ball and it gets pocketed, it then is a loss of game. They have created a new way to lose a game of 9-ball ! Unbelievable !
Below is from the AR section. AR is applied rulings. They set up various scenarios that could arise in a game. They effectively explain the ruling and why. The problem is that these rulings are used to complete the main rule, of which they have left out rule disciplines instead of completing the rule within the rule. This makes for going back and forth to get the full ruling. WPA makes the same mistakes.
Discussion, Rule 1-33-6: The “game winning ball” is designated by rule in 8-Ball, 9-Ball and 10-Ball. In One Pocket and Bank Pool, a ball is designated as the game-winning ball if it is the last ball on the table and the shooter needs only one more ball to win the game. There is never a specific game-winning ball in 14.1 Continuous.