Shelby was selected by the Bengals with the 138th pick of the fifth round of the
1976 NFL draft. He got little work as a running back in
1976, rushing just 5 times all season for 9 yards. His 761 kickoff return yards led the NFL that season, and his 97-yard return was the longest in the NFL that season. His one touchdown tied with
Cullen Bryant of the
Los Angeles Rams for the NFL lead. He was signed by the
Atlanta Falcons, but the Falcons returned him to the Bengals when a physical exam showed that he had suffered a
broken collar bone in the Bengals' final preseason game against the
Green Bay Packers. The Bengals waived him again a few days later and he was claimed by the
St. Louis Cardinals. He played 3 of 7 games for the Cardinals as a running back and kick returner in
1978 before being waived in October in order to make room on the roster to sign running back
Lawrence Barnes. He ended his pro career with 7 rushing attempts for 14 yards, 2 receptions for 14 yards, 58 kickoff returns for 1375 yards (a 23.7 yard average) and 42 punt returns for 302 yards (a 7.2 yard average). ==References==