A fielder is a position that is further classified as an infielder or an outfielder. Players positioned near the 1st, 2nd, and 3rd bases are the infielders, while those positioned beyond this area including the right, center, and left fielders are classified as outfielders. The lineup of fielders include the pitcher, catcher, first baseman, second baseman, third baseman, shortstop, left fielder, center fielder, and right fielder.