What position did Barry Bonds primarily play?

What position did Willie McCovey primarily play? Willie McCovey is best known for playing with which MLB team? What uniform number did Willie McCovey wear with the Giants? Which player was nicknamed "Stretch"? What uniform number did Barry Bonds wear with the Giants? What position did Buster Posey primarily play? What uniform number did Buster Posey wear with the Giants? What position did Madison Bumgarner primarily play?