| Brazil U20 Liga | 2021/08/18 21:00 | Fluminense PI - U20 v Piaui - U20 | W | 1-2 |
| Brazil U20 Liga | 2021/08/14 19:00 | Piaui - U20 v Picos - U20 | L | 0-3 |
| Brazil U20 Liga | 2021/08/09 21:00 | Piaui - U20 v EC Timon - U20 | L | 0-1 |
| Brazil U20 Liga | 2021/08/04 21:00 | EC Flamengo Piaui - U20 v Piaui - U20 | W | 0-1 |
| Brazil U20 Liga | 2021/08/01 19:00 | Piaui - U20 v River AC - U20 | L | 1-3 |
| Brazil U20 Liga | 2021/07/24 19:00 | Piaui - U20 v Fluminense PI - U20 | D | 1-1 |
| Brazil U20 Liga | 2021/07/21 19:00 | Picos - U20 v Piaui - U20 | L | 1-0 |
| Brazil U20 Liga | 2021/07/17 21:00 | EC Timon PI U20 v Piaui - U20 | L | 1-0 |