During his career, he broke the school's rushing record which was held by his friend, mentor and coach, Henry Jefferson.

His most memorable performance came against Dixie College in the championship game in which he ran for 375 yards and scored seven touchdowns.

[3] He was named SEC player of the year and nominated for the Doak Walker Award, which was won by LaDainian Tomlinson.

He backed up four-time Pro Bowler Corey Dillon, the Bengals' leading rusher since 1997, and had just 17 carries and seven receptions.

Chris Perry, former University of Michigan running back, joined the backfield as the Bengals' first round pick in the 2004 NFL draft.

[20] Johnson scored a rushing touchdown in his playoff debut, a 31–17 loss to the Pittsburgh Steelers in the Wild Card Round.

[25] Bengals head coach Marvin Lewis denied any trade talks involving Johnson.

"[27] After a trade fell through, Johnson was released by the team on August 30 during the final roster cuts.

The Lions released running back Tatum Bell to make room for Johnson.

The foundation provides assistance to families and children to promote self-sufficiency and self-reliance and incorporates several community-based programs.

[32] In 2007, James Farrior of the Pittsburgh Steelers joined the effort, establishing his own foundation to assist in this movement.

[33] The foundation helped fund the organization of the first football team for Clark Montessouri High School in Cincinnati.