No matter if your kids win or lose to a a kid they have beat or loss to, you should not shun the other kids dad, coach, or yell at your kid. I seen it happen today and I wanted to tell the mother what I really thought when she told me the boy got lucky and that wouldn't f@#@ing happen again. If we expect the kids to learn good sportsmanship then the parents need, and coaches, to do the same isn't for fun.