Favoring one team or another

[rainmaker]

This next question is totally unrelated to any experience I have had yet, but it did occur to me the other night, as I was thinking some things over. Have any of you ever been approached about "throwing" a game, or favoring one team? Do you know of anyone who has? How was it handled?

Obviously, if I thought my partner was on the take, I'd report it, without any hesitation. But, what should I do if I think my partner is favoring one team? I'm not talking here about deliberately throwing the game, but just indulging his/her preferences? I'm leaving this as a hypothetical, since I don't want it to appear to be directed at one person (although I do have one person in mind). Should I not even be looking? Should I try to talk to him/her? Should I tattle?