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Uruguayan boxer Alfredo Evangelista (in dark robe) stands in the ring with American Muhammad Ali (born Cassius Marcellus Clay Jr) (just behind Evangelista's right shoulder), and a number of attendees during in a Heavyweight Championship bout at the Capital Centre, Landover, Maryland, USA, May 16, 1977. Ali won the fight by a unanimous decision in round 15 of 15. (Photo by Joseph Klipple/Getty Images)

Uruguayan boxer Alfredo Evangelista (in dark robe) stands in the ring with American Muhammad Ali (born Cassius Marcellus Clay Jr) (just behind Evangelista's right shoulder), and a number of attendees during in a Heavyweight Championship bout at the Capital Centre, Landover, Maryland, USA, May 16, 1977. Ali won the fight by a unanimous decision in round 15 of 15. (Photo by Joseph Klipple/Getty Images)