Which player was nicknamed "The Grey Eagle"?

Rogers Hornsby is best known for playing with which MLB team? Which player was nicknamed "The Rajah"? What position did Tris Speaker primarily play? Tris Speaker is best known for playing with which MLB team? What position did Hank Greenberg primarily play? Hank Greenberg is best known for playing with which MLB team? What uniform number did Hank Greenberg wear with the Tigers? What position did Frank Robinson primarily play?