The average playing career for an NFL players is 3.5 years.
Longest Careers. The longest careers among NFL players tends to be those who are hit the least. Kickers and punters have the longest careers, averaging 4.87 years. Quarterbacks are next with an average career of 4.44 years. The career of the average NFL player tends to be short. The National Football League is extremely competitive, so players must compete hard to keep their jobs against new players entering the league every year. The injury rate among NFL players is also extremely high. Overall Average. According the the NFL Players Association, the average career of an NFL player is 3.3 years. The players left the NFL for a variety of reasons. These include injury, retirement and being cut by their team. The career of the average NFL player tends to be short. The National Football League is extremely competitive, so players must compete hard to keep their jobs against new players entering the league every year. The injury rate among NFL players is also extremely high. Factoring in players' abilities results in an adjusted average NFL career of 6.86 years. This approximate seven-year figure is the result of counting only those players who are actually on team rosters for the opening game of the season in which they're drafted or signed. The average National Football League player doesn't enjoy a very long career. The number most typically quoted is three years. If you're an NFL fan, this statistic probably leaves you a little confused as you watch your favorite player take the field season after season. […] The length of an NFL Career | Sports Info 247 – If a player is lucky to last long enough in the NFL, … If the average career of an NFL player is 3 ½ years, that means their career is typically over by the time they reach the age of 25 to 27 years old. With the life expectancy of American males at almost 76 years (according to The World Factbook), all NFL players must make plans for life after football. The average career of an NFL quarterback is only 4.44 years. The NFLPA also reported that players with degrees tend to have careers that last about 50% longer than those without degrees. The NFLPA says it is because most NFL players need the time in college to mature. In Baseball, Basketball, Football, Hockey, Sports. Comments. The average playing career for an NFL players is 3.5 years, the average MLB career is 5.6 years, the average NBA career is 4.8 years, and the average NHL career is 5.5 years. Playing in one of the major four American sports takes a toll on a person’s body that is nearly unfathomable The statistic depicts the average length of a player's career in the National Football League, considering different aspects influencing the length of a playing career. According to the NFL Players Association the average career length is about 3.3 years.  Follow Business Insider: The average NBA player will make $24.7 million in his career. That is based on an average salary of $5.2 million and an average career length of 4.8 years and is $18.6 million more than the career earnings for the average NFL player ($6.1 million). 
http://www.livestrong.com/article/15527-long-average-career-nfl-player/ http://www.livestrong.com/article/15527-long-average-career-nfl-player/ http://work.chron.com/long-average-career-nfl-player-12643.html https://sportsandrec.wordpress.com/2010/11/06/the-length-of-an-average-nfl-career/ http://www.rsvlts.com/2013/07/22/longest-sports-careers/ http://www.statista.com/statistics/240102/average-player-career-length-in-the-national-football-league/ http://www.businessinsider.com/chart-the-average-nba-player-will-make-lot-more-in-his-career-than-the-other-major-sports-2013-10
how long is the average nfl career