Which college was Ben Roethlisberger playing for when he entered the NFL?

Which college was Kurt Warner playing for when he entered the NFL? What jersey number did Kurt Warner wear with the Rams? What position did Ben Roethlisberger primarily play? Ben Roethlisberger is best known for playing with which NFL team? What jersey number did Ben Roethlisberger wear with the Steelers? What position did Philip Rivers primarily play? Philip Rivers is best known for playing with which NFL team? Which college was Philip Rivers playing for when he entered the NFL?