Joe Calzaghe (born 1972) retired undefeated as one of the greatest super middleweights of all time, holding the WBO title for over a decade and defeating American legends at the end of his career.

Career Highlights

• Professional record: 46 wins, 32 by KO, 0 losses
• WBO super middleweight champion for 10 years with 21 defenses
• Late-career wins over Bernard Hopkins and Roy Jones Jr.

Style

Calzaghe was a volume puncher with exceptional hand speed who overwhelmed opponents in flurries. His unorthodox style — hands low, throwing shots from awkward angles — was difficult to prepare for.

Reference:

Wikipedia: Joe Calzaghe

https://en.wikipedia.org/wiki/Joe_Calzaghe