WBC & WBA World Heavyweight titles. Win Jean-Pierre Coopman KO 5 (15) 01976-02-20 February 20, 1976 7001340000000000000 34 years, 7001340000000000000 34 days San Juan, Puerto Rico Retained The Ring , WBC & WBA World Heavyweight titles. Win Joe Frazier TKO 14 (15) , 0:59 01975-10-01 October 1, 1975 7001330000000000000 33 years, 7002257000000000000 257 days Quezon City,