Bernie Kosar net worth: Bernie Kosar is a retired American football player who has a net worth of $100 thousand dollars. Bernie Kosar gained additional notoriety after having to file for bankruptcy in 2009, becoming one of the most famous broke athletes in sports history. After a highly successful playing career, Bernie invested in several different ventures including a magazine, a steak house, an arena football league and real estate. In June 2009 Kosar shocked the sports world when he filed for bankruptcy protection claiming $9 million in assets, $19 million in debts. Today Kosar works as a consultant for the Cleveland Browns.