Muhammad Ali was known and will always be known as one of the best to put hands in boxing gloves. Muhammad Ali was an American professional boxer and activist. He is widely regarded as one of the most significant and celebrated sports figures of the 20th century. After the fight, the 39 -year-old Ali retired for good with a career record of 56 wins, five losses and 37 knockouts. He passed away June 3, 2016.