The shortest average career for NFL players by position is running back, at three years. These players often get injured very quickly because they are running directly into the trenches, colliding with giant men who want to hurt them.
The average career of an NFL player is 3 1/2 seasons according to the NFLPA.
The professional life of an NFL quarterback is short. The average length of an NFL quarterback's career is only 4.4 years.
Counting only quarterbacks who have played more than one full year (you'd be amazed at how many short-lived QBs there are), the average career length of an NFL quarterback is 6.6 years. Source: http://www.pro-football-reference.com/players/qbindex.htm
8 to 11 years
The average NFL career lasts from two to four years.
soccer premier players outrank the nfl but it depends on what levelAnswerFootball is known in usa and Canada as soccer. American football is known globally as gridiron. The top footballers earn more than the top nfl players. The average gridiron players career is just 4 years, where as the average footballers career in 14 years.
"There is a little bit of a misrepresentation or a misunderstanding on that. Frequently, it is said that the average career is about 3.5 years. In fact, if a player makes an opening day roster, his career is very close to six years…If you are a first-round draft choice, the average career is close to nine years. That 3.5-year average is really a misrepresentation. What it adds is a lot of players who don't make an NFL roster and it brings down the average."
Say you have 2240 current NFL players and 12,000 D-1 players..... but YOUR analysis is based on the assumption that each of these 2240 players play only one year and then leave, and allow each of the 12,000 college players to take over.You need to take into account the average career length of the 2240 players, and the percentage of the college players ready to make the jump (i.e., eligible juniors and seniors).
what are the hours that are required to work to be a NFL player?
Yes by a lot on average.