How many players are on a softball field?

During a regulation softball game, there are 10 defensive players on the field at one time. For recreational leagues, the rules can be altered to allow more, or sometimes fewer, players on the field at one time.

Every player on the field is assigned a certain number for coherence and score-keeping purposes. The pitcher is 1, the catcher is 2, the first baseman is 3, the second baseman is 4, the third baseman is 5, the shortstop is 6, the left fielder is 7, the center fielder is 8, the right fielder is 9 and the extra fielder who can be positioned anywhere on the field is 10.