The U 15 nationals should be the tournament that any team that wants to claim to be the best goes to.Run by US lacrosse during the travel season and no area of the country in school. Teams from all over the country attend so if you do not go no excuses and if you win this tournament you should be able to claim a national championship and no one can take that away from you. Yes a win in showcase tournaments have some indication of a teams ability it is still not the same as a win during championship style tournaments.