WBA World Heavyweight titles. Win Ken Norton Decision (unanimous) 15 (15) 01976-09-28 September 28, 1976 7001340000000000000 34 years, 7002255000000000000 255 days The Bronx , New York Retained The Ring , WBC & WBA World Heavyweight titles. Win Richard Dunn TKO 5 (15) 01976-05-24 May 24, 1976 7001340000000000000 34 years, 7002128000000000000 128 days Munich, West Germany Retained