Definitive Illegal Formation Rules

[Brushami]

I use
--- ST ST
--- --- --- --- AMR
--- MC---MC---MC ---
--- DC---DC---DC---DR
----------GK------------
I got 20% possession, why..

According to the beginning post, it says, "At least 1, but no more than 2, players on EACH..." You've got two on the right, but not a single one on the left.