The greatest boxers of all time

Jack Johnson - Not only was Jack Johnson the first African American to become a world heavyweight champion, this in 1908, but he was also a very charismatic man.

Jack Johnson - Johnson was known for taking a more defensive approach and tiring out his opponents, after which he would unleash his fury and demolish them.

Rocky Marciano - Born Rocco Francis Marchegiano in 1923, Rocky Marciano went on to become a pro boxer in 1947 and then a heavyweight world champion in 1952.

Floyd Mayweather Jr. - One of the greatest pound-for-pound fighters of all time, Floyd Mayweather Jr. won world titles in five divisions.

Mike Tyson - Michael Gerard Tyson was born in 1966 and grew up in the mean streets of Brownsville in Brooklyn.

Mike Tyson - With his distinctive peek-a-boo boxing style and devastating punches, in 1986, aged 20, Tyson became the youngest heavyweight champion in history.

Muhammad Ali - Born Cassius Marcellus Clay Jr. on January 17, 1942 in Louisville, Kentucky, Muhammad Ali is considered by many the GOAT (Greatest of All Time).

Muhammad Ali - In 1964, he became heavyweight champion of the world after defeating Sonny Liston. Ali said he'd "float like a butterfly, sting like a bee," and he certainly did.

Pernell Whitaker - Pernell "Sweet Pea" Whitaker's career spanned from 1984 to 2001. Known for his superior defensive style, Whitaker evaded punches effortlessly.

Pernell Whitaker - The fluidity of his reflexes were astonishing, as his opponents missed blow after blow. Whitaker finished his career with 40 wins (17 by knockouts), four losses, and one draw.

Tony Canzoneri - Tony Canzoneri won five world titles in three divisions. He went on to beat 40 top 10 fighters at the time, finishing his career with a record of 137 wins, 24 losses, and 10 draws.

Roberto Durán - It's safe to say that Roberto Durán is Panama's greatest contribution to boxing, with four titles in four different weight classes.

Roy Jones Jr. - Roy Jones Jr. won world championships in four weight classes. His demolishing left hooks earned him the nickname "Captain Hook."