Which athlete refused military service during the vietnam war on this day in 1967?

On 1967 of April, with the United States at war in Vietnam, Ali declined to be accepted into the military, saying "I ain't got no squabble with those Vietcong." On June 20, 1967, Ali has indicted draft avoidance, sentenced to five years in jail, fined $10,000 and restricted from boxing for a long time.