What position did Dwight Clark primarily play?

What position did Andre Reed primarily play? Andre Reed is best known for playing with which NFL team? Which college was Andre Reed playing for when he entered the NFL? What jersey number did Andre Reed wear with the Bills? Dwight Clark is best known for playing with which NFL team? Which college was Dwight Clark playing for when he entered the NFL? What jersey number did Dwight Clark wear with the 49ers? What position did Mark Andrews primarily play?