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40
NFL RULES
Tackling
A play is over when a defender stops the ball carrier by bringing him to the ground. A player is
tackled and a play is over when one or both of his knees touch the ground. In addition, a play
is over when a player runs out of bounds.
Moving the Ball
Every offensive play begins with a snap, where the quarterback receives the ball from the
center player in the offensive line. From there, the quarterback throws the ball, hands it off,
or runs with it.