The bridge has legs. Teams will have to submit rosters with their registrations. The older kids won't be allowed to play (um like world series now) so teams will be comprised of kids that are eligible to play. In soccer the kids have an id card with their picture and dob that they present to the ref prior to league games. pretty simple. and again, in hs years when most of the kids have gone through puberty, not problem with the system going grade based, just NOT in youth. Sorry to take your advantage away...