What position did Phil Niekro primarily play?

Which player was nicknamed "The Cobra"? What position did Don Sutton primarily play? Don Sutton is best known for playing with which MLB team? What uniform number did Don Sutton wear with the Dodgers? Phil Niekro is best known for playing with which MLB team? What uniform number did Phil Niekro wear with the Braves? Which player was nicknamed "Knucksie"? What position did Rollie Fingers primarily play?