Question: Who co-authored a 2003 biography of Muhammad Ali along with Don Atyeo, in which chapter on Ali's fight with a two-time world heavyweight champion and an Olympic gold medalist has been described as "an absolute classic"?
Sentence (from "Tim Witherspoon"): He is a two-time world heavyweight champion, having held the WBC title in 1984, and the WBA title in 1986.
Relevant evidence: No