Equipment costs aside, gridiron is a very position-centric game. It's difficult for 22 random people to start a recreational pick up game. Players are rarely t

Equipment costs aside, gridiron is a very position-centric game. It's difficult for 22 random people to start a recreational pick up game. Players are rarely trained in more than one or two positions and winning certain matchups are heavily dependent on the height and size of that player being within an optimal range for that position. Casual backyard football will often be played as 4 on 4 or 7 on 7 but that takes away the line play which IMO is the most unique and cerebral aspect of American football.