# Under Part 4, Rule 4.7 A.(1): Interpretation No. 10 (USHA Four-Wall Rules, 31 January 1999, historical)

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

USHA rules text used with permission of the U.S. Handball Association (ushandball.org); credit: U.S. Handball Association. Source: https://www.ushandball.org/

Balls that skid on wet walls or floors are court hinders, assuming that the player was in position to make a return had the ball bounced truly. However, a house rule may prevail for courts that tend to be very humid, causing the ball to frequently skid on the walls. In such circumstances, hinders should not be called for balls skidding on walls. The referee must inform the players before such a house rule will apply.

Balls that skid on a wet floor will always be called hinders, regardless of the condition of the court, again assuming that the player was in position to make a return had the ball bounced truly.

## Mentioned here

- [Player](https://handball.theperfectship.com/player.md)
- [Referee](https://handball.theperfectship.com/match-referee.md)
- [Hinder](https://handball.theperfectship.com/hinder.md)
- [Court](https://handball.theperfectship.com/court.md)
- [Ball](https://handball.theperfectship.com/ball.md)
- [Wall](https://handball.theperfectship.com/wall.md)
- [Floor](https://handball.theperfectship.com/floor.md)

## Relationships

- Player relates to Referee: mentioned together in 32 sub-rules.
- Player relates to Hinder: mentioned together in 18 sub-rules.
- Player relates to Court: mentioned together in 17 sub-rules.
- Player relates to Ball: mentioned together in 30 sub-rules.
- Referee relates to Hinder: mentioned together in 11 sub-rules.
- Referee relates to Ball: mentioned together in 21 sub-rules.
- Hinder relates to Ball: mentioned together in 19 sub-rules.
- Ball relates to Wall: mentioned together in 12 sub-rules.
- No link to the other terms shown: Floor.
- 13 weaker links (terms mentioned together in few sub-rules) are not drawn.

Rulebook: [USHA Four-Wall Rules, 31 January 1999](https://handball.theperfectship.com/rulebooks/usha-fourwall-1999-01-31.md)

Source: The Official USHA Handball Rules, 1999 (Wayback capture 20000914195049 of cohandball.com). USHA rules text, used with the USHA's written permission (letter not yet filed).