Kids sports has some absolutely horrible parents. Just this season in Mansfield baseball we've had 3 major fights break out that ended with police taking people away in cuffs. I wasn't there for any of them, but a couple of the youth in my church work our concessions stand and they've given me the play-by-plays.
My oldest plays 8U against several tournament teams in his league so I know we have those types of parents behind the other dougout in half the games we play so we're going to see it soon enough. One head coach took an automatic out one inning b/c he made his kid cry over not making a play in the field. Kid was so torn up he couldn't go to the plate so the ump assessed an out for skipping him in the order. The coach seemed unphased as if he did the right thing. Two of the teams bring kids in for week night games from 1-2 hours away. One of the clubs (the Bombers) flies kids in from Florida, California, Dominican, etc. for 10U and 12U tournaments.
As bad as our local baseball league can be, I have no doubt that AAU basketball is orders of magnitude worse. We go to church with most of our team so I'm highly confident our boys and their parents are on the same page, but it's just not worth that much effort to win at this age. All the boys play multiple sports year round so baseball isn't going to be that important to them right now that it should be their sole focus. If we weren't lucky enough to be with this team I'm not sure I'd keep my son in baseball for much longer. The teams we compete against take it way too seriously.
With all that said, we still finished 3rd in a 6 team league this season ahead of 2 of those tournament teams. I love that our boys keep getting better every season without having to put in professional type hours to get better.