0_Apprentice
I love American football. It's probably my favorite sport.
1_Wizard
I do too. It is also known as gridiron football and is a team sport played by two teams of 11 players.
0_Apprentice
Wow, would you believe I thought it was 10 players? That's crazy lol 
1_Wizard
Yeah, the offense controls the football and attempts to advance the field by running or passing.
0_Apprentice
That's called a play, right? I don't know a lot of technical terms of the game.
1_Wizard
The offense has to advance ten yards in four plays, which are actually called downs. Otherwise the other team gets the ball.