Bad investments and obviously poor buisness associates .... the shocking thing in this article is that 78% of NFL players have serious issues within 2 years of retirement.
http://www.thepostgame.com/blog/dish/201111/nfl-quarterback-will-have-work-9-5-after-18-year-career
http://www.thepostgame.com/blog/dish/201111/nfl-quarterback-will-have-work-9-5-after-18-year-career