Calzaghe competed from 1993 to 2008. He was trained by his father Enzo. The younger Calzaghe was a champion in two weight classes. He was the unified WBA (Super), WBC, IBF, WBO and Ring magazine super-middleweight champion. He was also the Ring light-heavyweight champion. BoxRec.com ranks him as the best British super-middleweight boxer of all time. He went undefeated in his professional career, having a record 46–0. He had famous wins against boxers such as Mikkel Kessler, Bernard Hopkins and Roy Jones Jr. (in his final fight). He retired on 5 February 2009. In 2007, Calzaghe won the BBC Sports Personality of the Year Award.
Calzaghe was born in Hammersmith, London, England. His father, musician-turned-trainer Enzo (1949–2018), was from the island of Sardinia, Italy. His mother is Welsh. He grew up in Newbridge, Wales. He has two sons with his former wife Mandy Davies.
- "BoxRec". boxrec.com. Retrieved 17 September 2018.
- "Enzo Calzaghe, champion boxing trainer, dies aged 69". The Guardian. 17 September 2018. Retrieved 17 September 2018.
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