(Reuters) - If Johnny Manziel never plays another game in the National Football League, he will not be the first talented player to squander his natural gifts and no doubt will not be the last.
It is one thing to have a career cut short by injury, quite another to sabotage yourself through self-inflicted wounds.
Doubts about Manziel's emotional stability and maturity contributed to the 2012 Heisman Trophy winner -- he was the first freshman to be named the best player in college football -- falling to 22nd in the 2014 draft before he was finally picked up by the Cleveland Browns.