We are told in Alabama that the warning is told during the conference with the coaches before the game ever starts. The first time we see a shirt out they are told to leave the game. It seems to have worked because we don't have a big problem with it anymore. Everybody in your association needs to be on the same page with this. Send them out early and you won't have to later!

I'm just curious...why must you have a tucked in shirt?

Thanks,
Matt

Because it's a rule.

2-4-15
A player's team jersey designed to be worn inside the pants shall be tucked inside the pants and the pants shall be above the hips and worn properly. A player not conforming to this uniform policy shall be directed to leave the game.