10. Kelly Pavlik
Former unified middleweight champion Pavlik was a blue-collar hero in his native Ohio. ‘The Ghost’ was an extremely effective boxer with three title defenses, but he got out of the sport at the right time. He made his millions and explained that he no longer had a love for the sport. This is brave because many boxers fight on for far too long.
Pavlik retired after a fight against Andre Ward fell through. Then he decided enough was enough because it just wasn’t worth it anymore. “When you’re done, you might have brain problems, you might be punchy, you might develop Parkinson’s,” he explained to ESPN in 2011. “Why push it? I don’t need it and my heart’s not in it anymore.”