Kurt Warner
Warner’s story is one of the greatest career revivals ever. He was working in a grocery store before he made it to the NFL because he was desperate to pay his bills. The Northern Iowa star went undrafted but he didn’t give up on his dream. Warner played Arena Football and in NFL Europe before he earned a backup berth in St. Louis.

Trent Green’s injury was Warner’s golden opportunity and he never looked back. This was the beginning of ‘The Greatest Show on Turf’ as the Rams won the Super Bowl. It’s one of the most inspiring stories in sports history and Netflix even made a movie about it (via People).