Claim: Muhammad Ali won the heavyweight boxing title in 1964.
Evidence: At age 22 in 1964 , he won the WBA , WBC , and lineal heavyweight titles from Sonny Liston in a big upset.
Ali -LRB- then Clay -RRB- won when Liston gave up at the opening of the seventh round -LRB- after being clearly dominated in the sixth -RRB-.