| Brazil U20 League | 2022/04/24 18:00 | Sao Jose EC U20 v Marau FC U20 | L | 4-2 |
| Brazil U20 League | 2021/11/26 18:30 | EC Juventude U20 v Marau FC U20 | L | 5-0 |
| Brazil U20 League | 2021/11/17 19:00 | Internacional U20 v Marau FC U20 | L | 7-0 |
| Brazil U20 League | 2021/11/10 19:00 | Garibaldi U20 v Marau FC U20 | L | 2-0 |
| Brazil U20 League | 2021/09/18 18:00 | SER Caxias do Sul U20 v Marau FC U20 | L | 1-0 |
| Brazil U20 League | 2022/05/09 18:00 | Uniao Harmonia U20 v Riograndense U20 | L | 0-5 |
| Brazil U20 League | 2022/05/05 20:00 | SERC Brasil U20 v Uniao Harmonia U20 | L | 3-1 |
| Brazil U20 League | 2022/04/30 18:00 | APAFUT U20 v Uniao Harmonia U20 | L | 1-0 |
| Brazil U20 League | 2022/04/25 18:00 | Uniao Harmonia U20 v Sapucaiense RS U20 | L | 0-2 |
| Brazil U20 League | 2021/11/26 14:00 | SC Doze Horas U20 v Uniao Harmonia U20 | L | 7-1 |
| Brazil U20 League | 2021/11/22 14:00 | Uniao Harmonia U20 v Gremio Nacional U20 | L | 1-2 |
| Brazil U20 League | 2021/11/19 18:30 | Atletico Clube Sulbrasil U20 v Uniao Harmonia U20 | L | 2-0 |
| Brazil U20 League | 2021/11/15 14:00 | Uniao Harmonia U20 v Riopardense U20 | W | 2-0 |