Line of scrimmage.
You would take Metrorail
In association football, the ball must completely pass over the line: on is in.In American football and rugby football, any contact with the line makes the ball or player out of play: on is out.
the line of scrimmage
The ball is placed at the 2 yard line in the NFL and the 3 yard line in college football.
College football kicks off at the 35-yard line.
defensive line
The line in front of the quarter back
All football fields are 100 yards long from goal line to goal line
The lowest age it 18 to play on the reserve team if drafted to play.
That line is called the line of scrimmage.
Line of Scrimmage