What jersey number did Troy Polamalu wear with the Steelers?

Which college was Ed Reed playing for when he entered the NFL? What jersey number did Ed Reed wear with the Ravens? What position did Troy Polamalu primarily play? Which college was Troy Polamalu playing for when he entered the NFL? What position did Brian Urlacher primarily play? Brian Urlacher is best known for playing with which NFL team? Which college was Brian Urlacher playing for when he entered the NFL? What jersey number did Brian Urlacher wear with the Bears?