U.S. Marine Alex Minsky lost his leg and nearly died in Afghanistan three years ago, when he and his fellow Marines fell victim to a roadside bomb. After recovering from a coma and learning to use his new prosthetic leg, the Purple Heart recipient fell into depression and started drinking.

Boxing is a sport more often associated with brute violence than with aesthetics. But photographer Howard Schatz has turned thuggish fighters into the subjects of extraordinary portraits showing the beautiful side of pugilism. The stunning pictures, collected in a new book, took six years to capture as Mr Schatz sought to investigate every aspect of the controversial sport.