American writers have been fascinated by the ring, both the primal contest inside the ropes and the crazy carnival world outside them. From neighborhood gyms and smoke-filled arenas to star-studded casinos and exotic locales, they have chronicled unforgettable stories about determination and dissipation, about great champions and punch-drunk has-beens, about colorful entourages and outrageous promoters, and, inevitably along the way, about race, class,...