What position did Gary Carter primarily play?

Which player was nicknamed "Captain America"? What position did Keith Hernandez primarily play? Keith Hernandez is best known for playing with which MLB team? What uniform number did Keith Hernandez wear with the Mets? What position did Anthony Rizzo primarily play? Anthony Rizzo is best known for playing with which MLB team? What uniform number did Anthony Rizzo wear with the Cubs? What position did Kris Bryant primarily play?