This man stands against a white background with his head tilted back and his arms behind his back with five arrows in his chest and one in his leg in imitation of St. Sebastian in a photo by Carl Fischer which appeared on the cover of Esquire.
In a John Shearer photo, this man stands, his hands pressed against wire grating, outside of a window looking in, open-mouthed, at a man in an elaborate robe, who stares out the window past him. This man stands against a white background with his head tilted back and his arms behind his back with five arrows in his chest and one in his leg in imitation of St. Sebastian in a photo by Carl Fischer which appeared on the cover of Esquire. Bob Thomas shot this man staring wide-eyed at the camera with his head tilted back, his right arm raised menacingly, and a piece of tape with a small lock attached across his mouth. A bald man with glasses appears between the legs of this man, looking up at him, in a Neil Leifer photo, which shows this man curling his right arm across his abdomen as he stares down, open-mouthed, at a man in black trunks sprawled beneath him. That photo, taken in Lewiston, Maine, in 1965, shows this man crowing over Sonny Liston. For 10 points, name this "greatest" boxer. 
In a John Shearer photo, this man stands, his hands pressed against wire grating, outside of a window looking in, open-mouthed, at a man in an elaborate robe, who stares out the window past him.
Muhammad Ali [or Cassius Clay]