In college, he was teammates with QB Brett Favre during the 1989 and 1990 seasons.
He was an immediate contributor for the Cleveland Browns under then head coach Bill Belichick with 3 seasons over 40 catches, 710 yards, and 7 TD. His early career best came in 1993 when he hauled in 41 catches for 756 yards with 8 TD.
In 1993, Jackson changed his name to Dyson. Although, his legal last name was always Dyson, he was partial to using Jackson. He changed his name, when the NFL regulated numbers for positions and forced him to lose number 1 for number 81. After the first week of the season, he changed his name back to Jackson.
In 1996, Jackson was tied with San Diego Chargers wide receiver Tony Martin for most receiving touchdowns in the NFL with 14. He also had career highs with 76 catches and 1,201 yards.