Well one thing is the way the game is played. With football, it is such a physical sport that you dont have time really develop guys because of the beatings those guys take week in and week out. Running backs typically fall apart when they hit the 30 year old mark. The only positions where you can be successful for a long time are qbs and kickers because they do not typically take a beating. College is basically the minors for football. You dont have the body or time to go from college to the minors to develop because one hit in football and your career is done. With baseball you can see guys playing well into their 40’s so they have time to develop their game before going pro.
