John David Jackson (boxer) John David Jackson (boxer) John David Jackson (born May 17, 1963) is an American former professional boxer who competed from 1984 to 1999, and has since worked as a boxing trainer. He is a two-weight world champion, having held the WBO junior middleweight title twice between 1988 and 1993, and the WBA middleweight title from 1993 to 1994. Jackson turned professional in 1984 and won his first 20 fights. He won the inaugural WBO junior middleweight title in 1988 with a win over Lupe Aquino. He defended the title six times before moving up to middleweight in 1993 to take
Joe Calzaghe his title, and then retired. After Collins retired, a fight against British boxing legend Chris Eubank was quickly set up for the vacant WBO title on 11 October 1997, in Sheffield. Calzaghe emerged victorious over the two-time WBO champion, knocking the granite chinned Eubank down in the opening seconds and claiming a unanimous points win. The judges scored the contest 118–110, 118–109, and 116–111 in favour of Calzaghe. Eubank said of Calzaghe in a 2006 interview that: "Joe is the proper article, a true warrior." Calzaghe conceded that Eubank, even in his comeback, gave him the toughest fight of his