| Brazil U20 League | 2021/10/05 18:00 | Riopardense U20 v Uniao Harmonia U20 | D | 1-1 |
| Brazil U20 League | 2021/09/14 18:00 | Uniao Harmonia U20 v SC Jau U20 | L | 0-5 |
| Brazil U20 League | 2019/06/05 18:00 | Novo Hamburgo RS U20 v Uniao Harmonia U20 | L | 3-1 |
| Brazil U20 League | 2019/05/30 18:00 | Uniao Harmonia U20 v Lajeadense RS U20 | L | 0-3 |
| Brazil U20 League | 2019/05/25 18:00 | Guarani RS U20 v Uniao Harmonia U20 | L | 5-1 |
| Brazil U20 League | 2019/05/22 18:00 | Uniao Harmonia U20 v Gremio U20 | L | 1-9 |
| Brazil U20 League | 2019/05/13 18:00 | Uniao Harmonia U20 v Nova Prata RS U20 | L | 1-2 |
| Brazil U20 League | 2019/05/04 14:00 | Internacional U20 v Uniao Harmonia U20 | L | 5-1 |
| Brazil U20 League | 2021/10/04 18:00 | Atletico Clube Sulbrasil U20 v SC Jau U20 | W | 2-1 |
| Brazil U20 League | 2021/09/28 18:00 | Sao Gabriel U20 v Atletico Clube Sulbrasil U20 | W | 0-1 |
| Brazil U20 League | 2021/09/12 18:00 | Atletico Clube Sulbrasil U20 v SC Doze Horas U20 | W | 2-1 |
| Brazil U20 Cup | 2021/07/10 13:00 | Cruzeiro RS U20 v Atletico Clube Sulbrasil U20 | L | 4-2 |
| Brazil U20 Cup | 2021/06/21 18:00 | CE Bento Goncalves RS U20 v Atletico Clube Sulbrasil U20 | L | 2-0 |
| Brazil U20 Cup | 2021/06/12 18:30 | APAFUT U20 v Atletico Clube Sulbrasil U20 | D | 1-1 |