Frazier Decision (unanimous) 15 (15) 01971-03-08 March 8, 1971 7001290000000000000 29 years, 7001500000000000000 50 days New York City, NY " The Fight of the Century "; Lost The Ring World Heavyweight title. For WBA & WBC World Heavyweight titles. Win Oscar Bonavena TKO 15 (15) , 2:03 01970-12-07 December 7, 1970 7001280000000000000 28 years, 7002324000000000000