Campbell possessed a rare combination of speed and power, and was a prolific running back from 1978 through 1985. His outstanding single-season performance in 1979 earned him All-Pro, Pro Bowl, and NFL Offensive Player of the Year honors. It was also the second of three consecutive seasons in which he led the league in rushing. Only Jim Brown had previously accomplished that feat. Campbell led the NFL in rushing in 1978, 1979, and 1980. He played in five Pro Bowls and finished his career with 9,407 yards and 74 touchdowns rushing along with 806 yards on 121 receptions. In 1980, Campbell's best year in the NFL, he ran for 1,934 yards including four 200-yard rushing games, including a personal best 206 yards against the Chicago Bears. Despite playing against stacked defenses Campbell managed to average 5.2 yards per carry and score 13 rushing touchdowns in 1980 alone.

This September 3, 1979 issue of Sports Illustrated has been signed in blue by Campbell and includes a Great Moments COA.