2021 Main
Group A
| Pl | W | D | L | Diff | Pts | |||
| 1 | Real Ariquemes | 6 | 6 | 0 | 0 | 11:0 | 11 | 18 |
| 2 | Porto Velho | 6 | 3 | 1 | 2 | 7:3 | 4 | 10 |
| 3 | Rondoniense | 6 | 2 | 1 | 3 | 8:7 | 1 | 7 |
| 4 | Genus | 6 | 0 | 0 | 6 | 2:18 | -16 | 0 |
Group B
| Pl | W | D | L | Diff | Pts | |||
| 1 | Uniao Cacoalense | 6 | 3 | 3 | 0 | 8:4 | 4 | 12 |
| 2 | Guapore | 6 | 3 | 2 | 1 | 6:3 | 3 | 11 |
| 3 | Barcelona RO | 6 | 2 | 2 | 2 | 6:7 | -1 | 8 |
| 4 | Ji-Parana | 6 | 0 | 1 | 5 | 6:12 | -6 | 1 |
Promotion ~ Campeonato Rondoniense (Play Offs: )
Relegation
2021 Play Offs
Semi-finals
| 1 | Guapore | Real Ariquemes | 0 : 2, 1 : 0 |
| 2 | Porto Velho | Uniao Cacoalense | 1 : 3, 1 : 0 |
Final
| 1 | Real Ariquemes | Porto Velho | 1 : 2, 1 : 1 |
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