5.) Cadillac Williams: 3,677 rushing yards
The former Auburn star was selected by the Bucs with the fifth overall pick in the 2005 NFL draft and had a stellar rookie year, rushing for 1,178 yards and six touchdowns while earning Offensive Rookie of the Year honors. During the 2007 season, Williams tore his patellar tendon and was never really the same player after that, despite working hard to make it back to the field. His last season with the Buccaneers came in 2010.