, WBC & WBA World Heavyweight titles. Win Jimmy Young Decision (unanimous) 15 (15) 01976-04-30 April 30, 1976 7001340000000000000 34 years, 7002104000000000000 104 days Landover, MD Retained The Ring , 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