Ali is regarded as one of the leading heavyweight boxers of the 20th century. He remains the only three-time lineal heavyweight champion, having won the title in 1964, 1974, and 1978. Between February 25 and September 19, 1964, Ali reigned as the undisputed heavyweight champion. He is the only boxer to be named The Ring magazine Fighter of the Year six times. He was ranked as the greatest athlete of the 20th century by Sports Illustrated, the Sports Personality of the Century by the BBC, and the third greatest athlete of the 20th century by ESPN SportsCentury. Nicknamed “The Greatest”, he was involved in several historic boxing matches. Notable among these were the first Liston fight; the “Fight of the Century”, “Super Fight II”, the “Thrilla in Manila” versus his rival Joe Frazier, and “The Rumble in the Jungle” versus George Foreman.