MUHAMMAD ALI, the best boxer, and according to some, the greatest athlete of all time, passed away on June 3, 2016, at the age of 75.

He was born on January 17, 1942, as Cassius Clay, and when he was only 18, he won the Olympic gold in the light heavyweight category in Rome. After that, he started a magnificent professional career during which he achieved 56 victories and was defeated five times.

He soon converted to Islam and took the name under which he became a legend, not only as a boxer but also as an activist, after refusing to join the military because he opposed the Vietnam War.

In 1984, he was diagnosed with Parkinson's disease. He passed away in 2016, the day after he was rushed to a hospital due to breathing problems. The official cause of death was septic shock.

His career was marked by fights with Joe Frazier and George Foreman in an era that is considered the golden era of his sport. Former US President Bill Clinton told Ali that he looked like a ballerina, but that he hit harder than anyone.

Here are some of Muhammad Ali's best fights:

Muhammad Ali vs. Sonny Liston (Miami, 1964) - a fight in which he became the world champion for the first time

Muhammad Ali vs. Cleveland Williams (Houston, 1966) - victory against one of the best hitters in boxing history

Muhammad Ali vs. Ernie Terrell (New York, 1967) - Terrell refused to call him by his new name, so Ali shouted "What's my name?" as he hit him

Muhammad Ali vs. Joe Frazier (New York, 1971) - defeat based on the decision of the judges from a great rival on whom he later took revenge

Muhammad Ali vs. George Foreman (Kinshasa, 1974) - a fight known as "Rumble in the Jungle", where Ali exhausted a great rival and then knocked him out and took back the title

Muhammad Ali vs. Joe Frazier (New York, 1974) - the introduction to the fight was a clash in a television studio, and this time Ali won on points

Muhammad Ali vs. Joe Frazier (Manila, 1975) - the final, third clash between Ali and Frazier in which Ali won after 14 incredible rounds. Frazier was forbidden from entering the ring for the final 15th round by his team

Muhammad Ali vs. Leon Spinks (New Orleans in 1978) - seven months after Spinks surprised him, Ali trained for a rematch and became the world champion at 36

Muhammad Ali vs. Trevor Berbick (Nassau, 1981) - for the first time in his career, he lost two consecutive fights and decided to retire at 39 years and 328 days.