# Rule 21 (Brokaw One-Wall Rules, 1916, historical)

> **Historical rulebook: not the current rules.** The current rules are here: https://handball.theperfectship.com/rules/one-wall/

In doubles, a player must not take up a position to block an opponent after the ball has left the board.

## Mentioned here

- [Player](https://handball.theperfectship.com/player.md)
- [Opponent](https://handball.theperfectship.com/opponent.md)
- [Front wall](https://handball.theperfectship.com/front-wall.md)
- [Ball](https://handball.theperfectship.com/ball.md)
- [Doubles](https://handball.theperfectship.com/doubles.md)

## Relationships

- Player relates to Opponent: mentioned together in 5 sub-rules.
- Player relates to Front wall: mentioned together in 7 sub-rules.
- Player relates to Ball: mentioned together in 15 sub-rules.
- Opponent relates to Ball: mentioned together in 6 sub-rules.
- Front wall relates to Ball: mentioned together in 16 sub-rules.
- Ball relates to Doubles: mentioned together in 7 sub-rules.
- 4 weaker links (terms mentioned together in few sub-rules) are not drawn.

Rulebook: [Brokaw One-Wall Rules, 1916](https://handball.theperfectship.com/rulebooks/brokaw-american-1916.md)

Source: James I. Brokaw, How to Play American Hand Ball (Spalding's Athletic Library No. 13; American Sports Publishing Company, copyright 1915; Library of Congress copy LCCN 16024697, catalogued 1916). Public domain.