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
Nigel Benn vs. Chris Eubank twice more to Steve Collins, who magnanimously claimed afterwards that Benn was the greatest British boxer ever, and wished he could have fought him at his prime. Eubank too lost his title and unbeaten record, also to Collins by a split decision. He retired, and came out of retirement to face a young Joe Calzaghe, who beat him on points. He fought for the WBO cruiserweight title, losing another split decision to Carl Thompson, and the rematch when, ahead on points, the doctor stopped the fight due to Eubank's swollen eye. This time, he retired for good. Two legends of