Marcus Allen was an athlete.
The College Football Hall of Fame is a hall of fame and museum devoted to college football . Marcus LeMarr Allen ( born March 26 , 1960 ) is a former American football running back and football analyst for CBS . His younger brother , Damon Allen , played quarterback for 23 seasons in the Canadian Football League and was professional football 's all-time leader in passing yards . The National Football League ( NFL ) is a professional American football league consisting of 32 teams , divided equally between the National Football Conference ( NFC ) and the American Football Conference ( AFC ) . A running back ( RB ) is an American and Canadian football position , a member of the offensive backfield .