Actually guys, all the sanctions let you do it if you are registered as a B you can play in any A tournament. This is not league ball. Tournament ball is a different animal everywhere except CA I guess. "C" is a step above "all stars", all stars is primarily rec teams that hit only a few tournaments a year. We are registered B team in ASA and Utrip and play nothing but opens and A tournaments. We got better 3/4 through the year with the addition of two players and cutting some girls. So instead of being called an A team we just go and play A teams. We aren't sand bagging either, we are not playing ant nationals or world's at the B level. Back to the response though, many states let you mix as long as you are playing up. B into A, not A into B.