If everyone would just slow down a little please...
As it has been observed different leagues have different scoring systems, so the correct answer to the OP situation depends entirely on the league. There simply is no single answer covering everything.
In many leagues ball count determines the winner. Whether or not the ball counts depends on the league rules. In some leagues it will count, in others it will not. Whether or not it is fair to claim a game, set or match win on a ball pocketed on a foul stroke is a matter of morality to be sure, but the rules set the standard, not morality.
In CSI play, which includes BCAPL and USAPL play, rules differ. In BCAPL play, there are as many different sets of handicapping and scoring systems as there are leagues - dozens and dozens of different systems, maybe no two the same.
While CSI Rule 2.7 does make reference to the ball counting in favor of the person with that group,
that rule may be modified at will by league operators per CSI Rule 10-9. I'm sure somewhere an LO has considered the situation and made such a modification.
In USAPL play, there is a specific rule that prohibits the illegally pocketed ball from winning a set or match:
Winning Ball Rule – 8-Ball & 9-Ball
Any ball that brings your total score or your team’s total score to a point that wins a set, must be legally pocketed. If a ball that would normally achieve that score is illegally pocketed, the following procedures apply:
a. Your inning ends. Any foul in conjunction with the illegally pocketed ball is applied normally.
b. The point for the illegally pocketed ball is deferred until you legally pocket another ball.
c. If you do not legally pocket any more balls in that game, the illegally pocketed ball is not scored.
d. If you legally pocket another ball in that game, you are credited with the illegally pocketed ball.
e. If more than one ball is illegally pocketed in such a situation, illegally pocketed balls are scored immediately up to the point at which one more ball is needed to win the game or match. The remaining illegally pocketed ball is deferred (Example: two balls are needed to win, and two balls are illegally pocketed. The first illegally pocketed ball is scored immediately; the second illegally pocketed ball is deferred.)
That rule was added about three years after USAPL started.
A side note on the CSI rule. When 2.7 was written in 2007, we did not contemplate the OP situation. We were knee deep in the new rule set and it simply didn't come up. The language that is still in CSI 2.7 was pulled from the then-current WSR 4.16, Illegally Pocketed Balls (
since obsolete):
...Illegally pocketed balls remain pocketed and are scored in favor of the shooter controlling that specific group of balls, solids or stripes."
Current WSR no longer addresses or defines an illegally pocketed ball, so if your league is playing under WSR (there is no such thing as "BCA rules"), then it is up to your league rules. All WSR states about 8-ball (in WSR 3.7) is that no ball is ever spotted unless it is the 8-ball made on the break.
Can't answer for other leagues...if you want to know about them, now let the chaos continue... :smile:
Buddy