On offense, eleven-person teams {football}| can have center, two guards, two tackles, two ends, quarterback, halfback, fullback, and slotback or wide receiver. On defense, eleven-person teams can have three or four linemen, three or four linebackers, two safeties, and two cornerbacks.
play
After plays, ball is on scrimmage line for four downs, in which offense tries to move forward ten yards {first down}.
scoring
Moving ball into opponent's end zone scores seven points {touchdown}. Kicking ball through opponent's goal posts scores three points {field goal}. Kicking ball through opponent's goal posts after a touchdown scores one point {point after}. Moving ball into opponent's end zone after a touchdown scores two points {points after}. Downing opponent in its end zone scores two points {safety, football}.
kicking
After receiving ball, offensive team can elect to kick ball to opponent {free kick}. Offensive team can elect to kick ball to opponent on fourth down {punt, football}.
ball movement
Players can carry ball forward {rush, football}. Players can throw ball downfield {pass, football}. Players can throw ball sideways {lateral, football}.
blocking
Offense tries to block players from downing ball carrier {blocking, football}.
tackling
Defense tries to down ball carrier {tackling}.
penalties
Teams cannot move across scrimmage line before ball moves from line {offside, football}. Teams cannot move forward before ball moves from line {illegal motion}. Teams cannot hit the passer after ball release {roughing the passer}. Teams cannot hit the kicker after ball release {roughing the kicker}. Teams cannot hit interfere with pass receiving or defending five yards beyond scrimmage line {pass interference}. Teams cannot block or tackle illegally {personal foul}. Penalties award other team five, ten, or fifteen yards or a down.
Practical Affairs>Game>Athletic>Ball
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Date Modified: 2022.0224