 As a result of NCAA transfer rules, however, he was forced to sit out the 2002 season.Shelton attended the University of Louisville, and in his junior year (in 2004) he led the Cardinals in rushing (938 yards) and touchdowns (20).His touchdown total tied the single season Louisville touchdown record (since broken by Michael Bush with 23 in 2005) and he also tied a Louisville record by rushing for five touchdowns in a game versus East Carolina University.