Muhammad Ali, one of the greatest boxers of all time, was born in Louisville, Kentucky with the name Cassius Marcellus Clay, Jr. He was the first fighter to win the world heavyweight championship on three separate occasions, a title which he defended 19 times. Shortly after becoming heavyweight champion, he announced that he was a member of the Nation of Islam, and changed his name to Muhammad Ali. In the 1980s, shortly after his retirement from boxing, he was diagnosed with Parkinson's disease. Although he retired form boxing, he devoted his time to charity activities. In 1999, Sports Illustrated awarded him the title "Sportsman of the Century."

穆罕默德·阿里是美國杰出的拳擊家，原名卡修斯·馬塞盧斯·克萊(小)。他1942年出生于肯塔基州路維，1964年因加入“黑人穆斯林”而改為現(xiàn)名。自1960年獲奧運會輕重量級拳擊冠軍后至1979年，他曾多次贏得世界重量級拳擊冠軍。20世紀(jì)80年代，他被確診患上帕金森氏綜合征，并退出拳壇，但是阿里并沒有從公眾的視野中消失，仍然活躍在體壇上，從事各種公益活動。1999年他在《體育畫刊》設(shè)立的20世紀(jì)體育獎評選中被評為“世紀(jì)最佳運動員”。