Question: Is the documentary "The Bluffs Butcher" based on James Tillis, the boxer who was known as "Quick" due to his fast hand speed or Ron Stander, who challenged Joe Frazier for the heavyweight championship in 1972? 
Sentence (from "Ron Stander"): He challenged for the world heavyweight championship in 1972, losing to Joe Frazier by fifth round technical knockout.
Relevant evidence: Yes