Over-the-line is a bat-and-ball sport, a game related to baseball and softball. Like those games, you have the batter, pitcher, and fielders. Because a game requires only three people per team, it is considerably easier to get a good informal game going. Equipment consists of a rope (or lines marked in the sand), an "official" softball bat & a "official" Orange rubber DeBeer softball. Source : https://en.wikipedia.org/wiki/Over-the-line