Football Live Ball
Line of Scrimmage
Players from both teams line up on the scrimmage line.
Before the play clock goes to 0:00, the offense must snap the ball to begin the down. A snap is a backward pass throw the legs from the center to the quarterback (both are players on the offense). Scrimmage downs always begin with a snap, also known as a hike.
The ball is live when the snap is made.
Football Dead Ball
- A score is made
- A pass is incomplete
- The ball carrier is tackled to the ground
- The ball is carried or thrown out of bounds