The NFL is a young man’s game…an extremely young man’s game.

According to the NFL Players Association Brian Burns Jersey , the average NFL career lasts just 3.3 years; hence the reason for the nickname Not For Long. Football is a collision sport and in no place are those collisions of greater magnitude than the best football league in the world. Whether it be a freak injury that ends a player’s career in a single moment or a recurrence of injuries; most players leave the game early due to declining health. The NFL has even protected itself from early retirements as they are well aware of the average career lasting 3.3 years and, thus, they mandate a player must play 4 years before cashing in on the Player Annuity Plan. This plan is funded by the 32 teams and it provides deferred compensation to retired players at no cost to the players....provided they can play 4 years.But injuries and health aren’t the only things that lead to shorter-than-anticipated careers. Simple ineffectiveness has knocked out many players who either have lost the ability or the motivation to perform at their expected standards. Some players hit that second contract, which is the big-money paycheck, become complacent, and simply ride out the rest of their guaranteed years. Then poof Greg Little Jersey , they’re gone before you even know it like infamous free agent bust Albert Haynesworth. Other players leave the game early due to off-the-field interests such as arguably the greatest player of all time, Jim Brown. When Brown was 29, and coming off an MVP season, he was given an ultimatum by Browns’ owner Art Modell to either come to training camp or risk being fined. Brown essentially told Modell, “You can’t fine me…because I’m retired!” and took his talents to Hollywood.We’ll take a look at which current players will retire early and the reason that will make them leave the game. Here are 15 NFL players who won’t make it to 30. We're over a month and a half into the 2017 NFL season and already, we're starting to have an idea of what rookies might wind up being draft busts. How is that possible Will Grier Jersey , you ask? Easy: they're not Jamal Adams or Marcus Maye.The fantastic Jets rookie duo outside, it's never fun to look back at how badly your team messed up with draft picks, but it can be fun to look them up and see what they're doing outside of football. Today, we're going to look at some of the biggest running back and receiver busts since the 2010 NFL Draft, track them down, and see where they are. Have they managed to stay in the NFL Christian Miller Jersey , or are they on TV?Really, there's no essential ground rules for this list other than players who are still on active NFL rosters are indeed eligible. However, those from the 2015 NFL Draft and up are ineligible unless there's a legitimate reason they belong on this list. Also, any player that was a bust at one position and switched to these two positions (i.e. Terrelle Pryor) is ineligible, as is Josh Gordon because he's not a bust. Gordon had other issues going on, ones he recently made clear in several interviews.If you're ready to look back at some of the biggest busts in recent memory and hope your team wasn't the one that made the pick Jordan Scarlett Jersey , let's do this.