The fights resonate still: The Fight of the Century, Down Goes Frazier!, The Rumble in the Jungle, The Thrilla in Manila. And the fighters, too—MUHAMMAD ALI, JOE FRAZIER, GEORGE FOREMAN—three complicated and competitive men who happened to be vying for sport's biggest prize when boxing was still a national reassurance and its champion a cultural resource. They fought five times for that title, from 1971 to 1975, ranging across the globe, and their struggles, triumphs, and defeats echo through the years as well.At the time, however accidental their convergence, it was an irreproducible pandemonium. Three of them? At once? Those fights made for a roiling and convulsive tournament, all the more striking against a backdrop of national dysfunction.