# Jersey / shirt

> A shirt must be worn in GAA championships; doubles partners must match.

## Where it shows up

- [One-wall · Rule 2.4 Uniform](https://handball.theperfectship.com/rules/one-wall/2.4.md): a, c
- [One-wall · Rule 3.4 Referee](https://handball.theperfectship.com/rules/one-wall/3.4.md): a
- [One-wall · Rule 4.10 Timeouts](https://handball.theperfectship.com/rules/one-wall/4.10.md): b
- [Four-wall · Rule 2.4 Uniform](https://handball.theperfectship.com/rules/four-wall/2.4.md): a, c
- [Four-wall · Rule 3.4 Referee](https://handball.theperfectship.com/rules/four-wall/3.4.md): a
- [Four-wall · Rule 4.10 Timeouts](https://handball.theperfectship.com/rules/four-wall/4.10.md): b
- [Four-wall · Rule 2.1-three Courts](https://handball.theperfectship.com/rules/four-wall/2.1-three.md): b
- [Four-wall · Rule 2.1-one Courts](https://handball.theperfectship.com/rules/four-wall/2.1-one.md): b

## Related

- [Uniform](https://handball.theperfectship.com/uniform.md)
- [GAA Handball](https://handball.theperfectship.com/gaa.md)

Rules text: United States Handball Association, used with written permission — https://www.ushandball.org/