What position did Christy Mathewson primarily play?

Larry Doby is best known for playing with which MLB team? What uniform number did Larry Doby wear with the Indians? What position did Satchel Paige primarily play? What position did Cy Young primarily play? Christy Mathewson is best known for playing with which MLB team? Which player was nicknamed "Big Six"? What position did Gerrit Cole primarily play? Gerrit Cole is best known for playing with which MLB team?