Does the 10b have to be made last or can it be combo'd/carom'd to win?
According to the CSI 10-ball rules I just read, you can win if you call the 10-ball and the pocket you are playing it in, during the game, on a legal hit. However, you can't call more than one ball on any shot, so if you call another ball and make the 10-ball in addition, it spots back up but you do get to keep shooting.
If you call the 10-ball and don't make it, but you make another ball instead (regardless of whether you intended to make it or not), you lose your shot and your opponent has the option to pass it back to you.
I personally don't like this rule, as you can call the 10-ball as often as you want, but if doesn't go and you don't pocket any other ball, and you get a lucky leave, your opponent is stuck with it and does not have the option to pass it back. I think there should be some options available for the opponent if someone takes a stab at making the 10 ball during the game, calls the 10 and misses, and gets a lucky roll and leaves their opponent hooked.
It just doesn't seem fair/consistent to me when if they happen to make another object ball on that shot, the opponent does have an option to pass it back, but if they don't make another object ball on that shot, they don't have the option to pass it back.