In 1979, Jackson finished with 1,013 yards receiving, 7 touchdown receptions and was second in the NFL in yards-per-catch with an average of 22.5. His teammate Morgan, who was nine years younger than Jackson, was the only one to finish with a higher average that season. Jackson finished his career by playing one season each for the Minnesota Vikings (1982) and the Seattle Seahawks (1983).
In 1979, Jackson's NFL career reached its peak with 1,013 yards receiving, 7 touchdown receptions, and an impressive average of 22.5 yards per catch. His teammate Morgan, who was significantly younger than him, surpassed him that season. Jackson then went on to play one season each for the Minnesota Vikings (1982) and Seattle Seahawks (1983) before retiring.