How will the holdbacks every get better if they consistently play with younger kids and then go to college and all of a sudden they are playing older players? It would seem to me, that the holdbacks are putting themselves at a disadvantage when it most counts. Nothing like waiting until you get to your first college practice to play with the big boys. The logic is very flawed- talent rises and players continue to play up and challenge oneself. The weaker play down and stay down. Coaches and players alike will see this when the holdbacks end up being very average in college. Athletes should challenge themselves at all times- it is what makes a player grow.