| U22 Campeonato Carioca | 2021/06/18 22:30 | Instituto Nauttilus U22 v Niteroi BC U22 | W | 64-85 |
| U22 Campeonato Carioca | 2021/08/08 12:00 | Fluminense U22 v Niteroi BC U22 | L | 73-41 |
| U22 Campeonato Carioca | 2021/06/25 22:00 | Flamengo v Niteroi BC U22 | L | 109-41 |
| U22 Campeonato Carioca | 2021/06/18 22:30 | Instituto Nauttilus U22 v Niteroi BC U22 | W | 64-85 |
| U22 Campeonato Carioca | 2021/06/11 22:00 | Niteroi BC U22 v Fluminense U22 | L | 51-66 |
| U22 Campeonato Carioca | 2021/06/06 13:00 | Tijuca TC U22 v Niteroi BC U22 | L | 81-46 |
| U22 Campeonato Carioca | 2021/08/06 22:30 | Instituto Nauttilus U22 v CD Atitude U22 | W | 69-66 |
| U22 Campeonato Carioca | 2021/07/09 22:30 | Instituto Nauttilus U22 v Fluminense U22 | L | 64-74 |
| U22 Campeonato Carioca | 2021/06/29 22:00 | Flamengo v Instituto Nauttilus U22 | L | 113-30 |
| U22 Campeonato Carioca | 2021/06/25 22:30 | Instituto Nauttilus U22 v Tijuca TC U22 | L | 45-95 |
| U22 Campeonato Carioca | 2021/06/18 22:30 | Instituto Nauttilus U22 v Niteroi BC U22 | L | 64-85 |
| U22 Campeonato Carioca | 2021/06/11 21:30 | CD Atitude U22 v Instituto Nauttilus U22 | L | 59-49 |
| U22 Campeonato Carioca | 2021/06/06 16:00 | Fluminense U22 v Instituto Nauttilus U22 | L | 96-51 |
| U22 Campeonato Carioca | 2021/05/28 22:00 | Instituto Nauttilus U22 v Flamengo | L | 37-74 |