Bernard Hopkins, aka 'The Executioner, aka 'The Alien' has retired at 51 with a pro record of 67 fights, 8 losses, 0 draws. What is most impressive about B Hopkins is that he came to the sport late in life (late teens) and competed at the highest level for 28 years. In that time he won his 1st middleweight title (IBF) in 1995 then the WBC and WBA belts to become the 1st man since Marvellous Marvin Hagler in 1987 to be the lineal undisputed middleweight champion when he defeated Oscar de la Hoya in 2005 for the WBO title. He defended his title(s) 20 times in total before losing in a decision to Jermaine Taylor in 2005 aged 40. After losing his middleweight titles (losing again to J Taylor in the rematch) he went to light heavyweight and again claimed the IBO, IBF and WBA titles, the WBA title coming at age 49. Famous for taking on the next best challenger, he has battled some terrific opponents such as Roy Jones Jnr (twice), Winky Wright, Segundo Mercado, Antwun Echols, Félix Trinidad, William Joppy, Joe Calzaghe and Chad Dawson. His dedication and unrivaled discipline sets him apart from his contemporaries. He walks away from boxing with it's highest respect. What a champion.