| Brazil U20 Liga | 05/15 18:00 | - | Marau FC - U20 v Uniao Harmonia U20 | L | 3-2 | |
| Brazil U20 Liga | 05/09 18:00 | - | Uniao Harmonia U20 v Riograndense - U20 | L | 0-5 | |
| Brazil U20 Liga | 05/05 20:00 | - | SERC Brasil - U20 v Uniao Harmonia U20 | L | 3-1 | |
| Brazil U20 Liga | 04/30 18:00 | - | APAFUT - U20 v Uniao Harmonia U20 | L | 1-0 | |
| Brazil U20 Liga | 04/25 18:00 | - | Uniao Harmonia U20 v Sapucaiense RS - U20 | L | 0-2 | |
| Brazil U20 Liga | 11/26 14:00 | - | SC Doze Horas - U20 v Uniao Harmonia U20 | L | 7-1 | |
| Brazil U20 Liga | 11/22 14:00 | - | Uniao Harmonia U20 v Gremio Nacional - U20 | L | 1-2 | |
| Brazil U20 Liga | 11/19 18:30 | - | Atletico Clube Sulbrasil - U20 v Uniao Harmonia U20 | L | 2-0 | |
| Brazil U20 Liga | 11/15 14:00 | - | Uniao Harmonia U20 v Riopardense U20 | W | 2-0 | |
| Brazil U20 Liga | 11/06 16:00 | - | SC Jau - U20 v Uniao Harmonia U20 | L | 3-2 | |
| Brazil U20 Liga | 11/03 18:00 | - | Sao Gabriel - U20 v Uniao Harmonia U20 | L | 6-2 | |
| Brazil U20 Liga | 10/26 18:00 | - | Uniao Harmonia U20 v SC Doze Horas - U20 | L | 0-1 | |
| Brazil U20 Liga | 10/15 18:00 | - | Gremio Nacional - U20 v Uniao Harmonia U20 | W | 0-2 | |
| Brazil U20 Liga | 10/11 18:00 | - | Uniao Harmonia U20 v Atletico Clube Sulbrasil - U20 | L | 0-6 | |
| Brazil U20 Liga | 10/05 18:00 | - | Riopardense U20 v Uniao Harmonia U20 | D | 1-1 | |
| Brazil U20 Liga | 09/14 18:00 | - | Uniao Harmonia U20 v SC Jau - U20 | L | 0-5 | |
| Brazil U20 Liga | 06/05 18:00 | - | Novo Hamburgo RS - U20 v Uniao Harmonia U20 | L | 3-1 | |
| Brazil U20 Liga | 05/30 18:00 | - | Uniao Harmonia U20 v Lajeadense RS U20 | L | 0-3 | |
| Brazil U20 Liga | 05/25 18:00 | - | Guarani RS U20 v Uniao Harmonia U20 | L | 5-1 | |
| Brazil U20 Liga | 05/22 18:00 | - |
Uniao Harmonia U20
v
Gremio RS U20
|
L | 1-9 | |
| Brazil U20 Liga | 05/13 18:00 | - | Uniao Harmonia U20 v Nova Prata RS - U20 | L | 1-2 | |
| Brazil U20 Liga | 05/04 14:00 | - |
Internacional RS - U20
v
Uniao Harmonia U20
|
L | 5-1 | |
| Brazil U20 Liga | 04/29 18:00 | - | Uniao Harmonia U20 v Novo Horizonte - U20 | W | 4-2 | |
| Brazil U20 Liga | 04/18 18:00 | - |
Uniao Harmonia U20
v
Brasil de Pelotas - U20
|
L | 0-2 | |
| Brazil U20 Liga | 04/07 18:00 | - |
Uniao Harmonia U20
v
Sao Jose RS - U20
|
L | 0-4 | |
| Brazil U20 Liga | 03/26 18:30 | - | Uniao Harmonia U20 v SERC Brasil - U20 | L | 1-3 |