He played college football for the Kansas State Wildcats, earning consensus All-American honors in 1998.
He was originally signed as an undrafted free agent by the Jaguars, and spent one season with the Rams.
After leaving the Rams, Allen was signed by the Calgary Stampeders and played seven regular season games with the team from 2005 to 2006.
In addition to scoring both rushing and receiving touchdowns on the offense, Allen was a kick and punt returner for the Stampeders.
This biographical article relating to an American football running back born in the 1970s is a stub.