What position did Bo Jackson primarily play?

What position did Marshawn Lynch primarily play? Marshawn Lynch is best known for playing with which NFL team? Which college was Marshawn Lynch playing for when he entered the NFL? What jersey number did Marshawn Lynch wear with the Seahawks? Bo Jackson is best known for playing with which NFL team? Which college was Bo Jackson playing for when he entered the NFL? What jersey number did Bo Jackson wear with the Raiders? What position did Larry Csonka primarily play?