Unlicensed: Random Notes from Boxing's Underbelly by Jon Hotten
Unlicensed fighting is the raw flipside of boxing. A few men make what they call easy money, but for many the unlicensed game becomes a nightmare of pain and fear. This book shares the lives and times of these men, from John Barnwell, a veteran of 30 years of brutal contests around the world, to the undefeated Billy Heaney, the street-fighting champion called "The Galway Bull".