What position did Tony Pérez primarily play?

Which player was nicknamed "Knucksie"? What position did Rollie Fingers primarily play? Rollie Fingers is best known for playing with which MLB team? What uniform number did Rollie Fingers wear with the Athletics? Tony Pérez is best known for playing with which MLB team? What uniform number did Tony Pérez wear with the Reds? Which player was nicknamed "Big Doggie"? What position did Dave Concepción primarily play?