they tell everyone who is allowed to catch a pass an who can not. usually 50-79 are the linemen numbers and they are not allowed to catch a pass from the QB unless it is deflected off someone else first. Receivers wear 80 or up or below 50. Generally people who receive the snap (quarter backs, kickers, & punters) are below the number 20.
There are no rules about defense numbers and any defensive player may touche the ball once it leave or even before it leave the QBs hand
To get a copy of a NFL football game, find someone who has recorded it and ask for a copy. You can even find the games online.
Maddan NFL
there are six refs in a NFL football game
Hshhs
NFL is an American football abbreviation. "NFL" stands for "National Football League". National because the league is played across the nation; Football because the game played is referred to as "football" (It is known as "football" in America. Many countries refer to it a "soccer".); League because this national game is played with multiple teams in many places at different times, etc. (unapproved definition of "league").
Close to the sidelines, but not too close.
300,000
No
About 170,000
NFL 10 wii (graphics)
How much does an NFL Umpire make for a playoff football game?
7500=1000- per game