Which college was John Riggins playing for when he entered the NFL?

Which college was Larry Csonka playing for when he entered the NFL? What jersey number did Larry Csonka wear with the Dolphins? What position did John Riggins primarily play? John Riggins is best known for playing with which NFL team? What jersey number did John Riggins wear with the Redskins? What position did Tiki Barber primarily play? Tiki Barber is best known for playing with which NFL team? Which college was Tiki Barber playing for when he entered the NFL?