Muhammad Ali 21 during an elimination bout following Rocky Marciano's retirement. Mike Tyson broke both records in 1986 when he defeated Trevor Berbick to win the heavyweight title at age 20. Soon after the Liston fight, Clay changed his name to Cassius X, and then later to Muhammad Ali upon converting to Islam and affiliating with the Nation of Islam. Ali then faced a rematch with Liston scheduled for May 1965 in Lewiston, Maine. It had been scheduled for Boston the previous November, but was postponed for six months due to Ali's emergency surgery for a hernia three days before. The fight
Ali S. Khan Ali S. Khan Rear Admiral Ali S. Khan is an American practicing physician and former Director of the Office of Public Health Preparedness and Response (PHPR) at the Centers for Disease Control and Prevention. Since July 2014, he has served as Dean of the College of Public Health and Retired Assistant Surgeon General at the University of Nebraska Medical Center in Omaha, Nebraska. Ali Khan received his Doctor of Medicine from the State University of New York Downstate Medical Center in Brooklyn, NY, and completed a joint residency in internal medicine and pediatrics at the University of Michigan. He later