For some former professional athletes, the hard work and dedication doesn’t end when they decide to retire their number. The world has no shortage of former athletes turned entrepreneurs that made a name for themselves after they’ve left the field. From former-boxer George Foreman’s line of cooking products to Hall of Fame quarterback Roger Staubach’s real estate firm, professional athletes have proven time and again they have the grit and gumption to be successful once their athletic career is over.