What jersey number did Bruce Smith wear with the Bills?

What jersey number did Joe Greene wear with the Steelers? What position did Bruce Smith primarily play? Bruce Smith is best known for playing with which NFL team? Which college was Bruce Smith playing for when he entered the NFL? What position did Derrick Thomas primarily play? Derrick Thomas is best known for playing with which NFL team? Which college was Derrick Thomas playing for when he entered the NFL? What jersey number did Derrick Thomas wear with the Chiefs?