10. Chris Mason
‘Mace the Ace’ was a very talented darts player before he left the sport. He competed at the highest level and he featured in multiple world championships. Mason was reasonably successful and made a lot of money from his career. But away from his sport, he was a difficult person. In fact, he spent a year in prison because of his violent nature. In sum, he allowed his heart to rule his head.
In 1990, Mason received the first serious legal effects of his antics. He resisted being arrested and a judge hit him with community service. But his worst criminal conviction came in 2002. He entered a house with two accomplices and attempted to rob it. Nobody knows why a minor celebrity thought that this was a good idea but it ended with him spending 12 months in jail.