It is very interesting that other people also play and invent interesting rules of fairness.
When I played with Mexicans (a field behind McDonald’s on California Street), they line up, and every even person will play for one team, and every odd person will play for other team.
They begin playing in all different shirts relaying on their memory for the first several minutes. When the one team scores first goal, the other team takes their shirts off.
And then they play like this (without corners) to the end of the game. Who can we make our team splits more fair?