13. Bill Goldberg ($13.5 million)
When Bill Goldberg made his WCW (World Championship Wrestling) debut in 1997, the world went crazy, because two years prior to that, he had just retired from another sport franchise: American football.
For five years, he was a defensive tackle player for several NFL teams. In 1992, he was a part of the World Bowl winning team, Sacramento Surge. But that was about it. To be fair, he has been more successful in wrestling.
Bill left WCW a couple times throughout his entire career. First was in 2002 when he decided to compete in All Japan Pro Wrestling. Then in 2004, he returned for another year before his retirement.
Last year, Bill stepped back into the ring and has appeared in some matches ever since. However, he still focuses more on his career as MMA commentator. He is making good enough money to keep his $13.5 estimated net worth.