# 1990–91 Primera División de Baloncesto

The 1990–91 Primera División season was the second category of the Spanish basketball league system during the 1990–91 season. It was the second played with the name of Primera División.

## Format

16 teams played this season.
* Regular Season
** League of 16 teams in a single group where they play all against all in two rounds.
* Second Phase
** Group A1, made up of those classified in 1st, 4th, 5th and 8th positions.
** Group A2, made up of those classified in the 2nd, 3rd, 6th and 7th positions.
** Group B1, made up of those classified in positions 9th, 12th, 13th and 16th.
** Group B2, made up of those classified in the 10th, 11th, 14th and 15th positions.
* Promotion playoffs
** The first 3 of groups A1 and A2; plus the champions of groups B1 and B2 play two rounds of knockout rounds for promotion. The first round is the best of 3 matches (first and third matches are played at the home of the best classified in the regular season) and the second to the best of 5 (first, third and fifth matches are played at the home of the best classified in the regular season). The two winners go up to the ACB League.
* Relegation playoffs
** The last of groups A1 and A2 together with the 2nd classified of groups B1 and B2 play an intermediate tie to the best of 3 games (first and third matches are played at the home of the best classified in the regular season). The winners keep the category, while the losers have to play another round to decide who goes down.
** The last 2 classifieds in groups B1 and B2 play a best of 3 games. The losers go down to the 'Segunda División' and the winners have to play one more tie against the losers of the intermediate to the best of 5 games (first, third and fifth games are played at the home of the best classified in the regular season). The winners keep the category.

## Teams
### Promotion and relegation (pre-season)

A total of 16 teams contested the league, including 10 sides from the 1989–90 season, two relegated from the 1989–90 ACB and four promoted from the Segunda División. CAB Obradoiro was not admitted by the FEB and was replaced by Loyola Easo, who obtained a relegation place the previous season.

#### Teams relegated from Liga ACB

* Gran Canaria
* Tenerife AB

#### Teams promoted from Segunda División

* CB Azuqueca
* Digsa Loja
* Santa Coloma
* CAB Cartagena

### Venues and locations

| Team | Home city |
| BC Andorra | Andorra la Vella |
| CAB Cartagena | Cartagena |
| Caja Badajoz | Badajoz |
| CB Azuqueca | Azuqueca de Henares |
| CB Guadalajara | Guadalajara |
| CB Llíria | Llíria |
| CD Cajamadrid | Alcalá de Henares |
| Cirsa Hospitalet | Hospitalet de Llobregat |
| Digsa Loja | Loja |
| ElMonte Huelva | Huelva |
| Gran Canaria | Las Palmas |
| Lagisa Gijón | Gijón |
| Loyola Easo | San Sebastián |
| Prohaci Mallorca | Palma de Mallorca |
| Santa Coloma | Santa Coloma de Gramenet |
| Tenerife AB | Santa Cruz de Tenerife |

## Regular season

| Pos | Team | Pld | W | L | PF | PA | PD | Pts | Qualification or relegation |
| 1 | Gran Canaria | 30 | 22 | 8 | 2295 | 2101 | +194 | 52 | Qualification to A1 |
| 2 | CB Llíria | 30 | 18 | 12 | 2311 | 2294 | +17 | 48 | Qualification to A2 |
| 3 | Prohaci Mallorca | 30 | 18 | 12 | 2501 | 2391 | +110 | 48 | Qualification to A2 |
| 4 | CB Guadalajara | 30 | 18 | 12 | 2314 | 2226 | +88 | 48 | Qualification to A1 |
| 5 | CD Cajamadrid | 30 | 18 | 12 | 2326 | 2244 | +82 | 48 | Qualification to A1 |
| 6 | BC Andorra | 30 | 18 | 12 | 2604 | 2461 | +143 | 48 | Qualification to A2 |
| 7 | Loyola Easo | 30 | 17 | 13 | 2392 | 2331 | +61 | 47 | Qualification to A2 |
| 8 | ElMonte Huelva | 30 | 15 | 15 | 2453 | 2471 | −18 | 45 | Qualification to A1 |
| 9 | Caja Badajoz | 30 | 15 | 15 | 2433 | 2374 | +59 | 45 | Qualification to B1 |
| 10 | Lagisa Gijón | 30 | 15 | 15 | 2433 | 2374 | +59 | 45 | Qualification to B2 |
| 11 | Santa Coloma | 30 | 12 | 18 | 2272 | 2301 | −29 | 42 | Qualification to B2 |
| 12 | CAB Cartagena | 30 | 11 | 19 | 2272 | 2413 | −141 | 41 | Qualification to B1 |
| 13 | Tenerife AB | 30 | 11 | 19 | 2443 | 2580 | −137 | 41 | Qualification to B1 |
| 14 | Cirsa Hospitalet | 30 | 11 | 19 | 2357 | 2497 | −140 | 41 | Qualification to B2 |
| 15 | Digsa Loja | 30 | 11 | 19 | 2315 | 2499 | −184 | 41 | Qualification to B2 |
| 16 | CB Azuqueca | 30 | 10 | 20 | 2307 | 2401 | −94 | 40 | Qualification to B1 |

## Second Phase
### Group A1

| Pos | Team | Pld | W | L | PF | PA | PD | Pts | Qualification or relegation |
| 1 | Gran Canaria | 6 | 4 | 2 | 489 | 439 | +50 | 10 | Qualification to Promotion playoffs |
| 2 | CD Cajamadrid | 6 | 4 | 2 | 463 | 446 | +17 | 10 | Qualification to Promotion playoffs |
| 3 | ElMonte Huelva | 6 | 4 | 2 | 467 | 469 | −2 | 10 | Qualification to Promotion playoffs |
| 4 | CB Guadalajara | 6 | 0 | 6 | 454 | 478 | −24 | 6 | Qualification to Intermediate playoff |

### Group A2

| Pos | Team | Pld | W | L | PF | PA | PD | Pts | Qualification or relegation |
| 1 | Prohaci Mallorca | 6 | 5 | 1 | 527 | 492 | +35 | 11 | Qualification to Promotion playoffs |
| 2 | BC Andorra | 6 | 3 | 3 | 487 | 476 | +11 | 9 | Qualification to Promotion playoffs |
| 3 | CB Llíria | 6 | 2 | 4 | 478 | 486 | −8 | 8 | Qualification to Promotion playoffs |
| 4 | Loyola Easo | 6 | 2 | 4 | 452 | 490 | −38 | 8 | Qualification to Intermediate playoff |

### Group B1

| Pos | Team | Pld | W | L | PF | PA | PD | Pts | Qualification or relegation |
| 1 | Caja Badajoz | 6 | 4 | 2 | 479 | 451 | +28 | 10 | Qualification to Promotion playoffs |
| 2 | Tenerife AB | 6 | 4 | 2 | 546 | 476 | +70 | 10 | Qualification to Intermediate playoff |
| 3 | CAB Cartagena | 6 | 3 | 3 | 505 | 469 | +36 | 9 | Qualification to Relegation playoffs |
| 4 | CB Azuqueca | 6 | 1 | 5 | 483 | 529 | −46 | 7 | Qualification to Relegation playoffs |

### Group B2

| Pos | Team | Pld | W | L | PF | PA | PD | Pts | Qualification or relegation |
| 1 | Lagisa Gijón | 6 | 4 | 2 | 433 | 437 | −4 | 10 | Qualification to Promotion playoffs |
| 2 | Cirsa Hospitalet | 6 | 4 | 2 | 461 | 443 | +18 | 10 | Qualification to Intermediate playoff |
| 3 | Digsa Loja | 6 | 2 | 4 | 484 | 481 | +3 | 8 | Qualification to Relegation playoffs |
| 4 | Santa Coloma | 6 | 2 | 4 | 434 | 460 | −26 | 8 | Qualification to Relegation playoffs |

## PlayOffs
### Promotion playoffs

Semifinal winners are promoted to Liga ACB.
| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Promoted to Liga ACB |
| A1-1 Gran Canaria | A1-1 Gran Canaria | A1-1 Gran Canaria | 63 | 65 | 85 | | | | | | |
| B2-1 Lagisa Gijón | B2-1 Lagisa Gijón | B2-1 Lagisa Gijón | 53 | 69 | 74 | | | | | | |
| B2-1 Lagisa Gijón | B2-1 Lagisa Gijón | B2-1 Lagisa Gijón | 53 | 69 | 74 | A1-1 Gran Canaria | A1-1 Gran Canaria | A1-1 Gran Canaria | A1-1 Gran Canaria | 87 | 81 |
| | | | | | | A2-2 BC Andorra | A2-2 BC Andorra | A2-2 BC Andorra | A2-2 BC Andorra | 87 | 62 |
| A2-2 BC Andorra | A2-2 BC Andorra | A2-2 BC Andorra | A2-2 BC Andorra | 87 | 84 | A2-2 BC Andorra | A2-2 BC Andorra | A2-2 BC Andorra | A2-2 BC Andorra | 87 | 62 |
| A1-3 ElMonte Huelva | A1-3 ElMonte Huelva | A1-3 ElMonte Huelva | A1-3 ElMonte Huelva | 66 | 74 | | | | | | | |
| A1-3 ElMonte Huelva | A1-3 ElMonte Huelva | A1-3 ElMonte Huelva | A1-3 ElMonte Huelva | 66 | 74 | | | | | | | A1-1 Gran Canaria |
| | | | | | | | | | | | | A2-3 CB Llíria |
| A2-3 CB Llíria | A2-3 CB Llíria | A2-3 CB Llíria | 69 | 72 | 97 | | | | | | | A2-3 CB Llíria |
| A1-2 CD Cajamadrid | A1-2 CD Cajamadrid | A1-2 CD Cajamadrid | 66 | 81 | 85 | | | | | | | |
| A1-2 CD Cajamadrid | A1-2 CD Cajamadrid | A1-2 CD Cajamadrid | 66 | 81 | 85 | A2-3 CB Llíria | A2-3 CB Llíria | A2-3 CB Llíria | 84 | 89 | 92 | |
| | | | | | | A2-1 Prohaci Mallorca | A2-1 Prohaci Mallorca | A2-1 Prohaci Mallorca | 71 | 86 | 84 |
| A2-1 Prohaci Mallorca | A2-1 Prohaci Mallorca | A2-1 Prohaci Mallorca | A2-1 Prohaci Mallorca | 106 | 103 | A2-1 Prohaci Mallorca | A2-1 Prohaci Mallorca | A2-1 Prohaci Mallorca | 71 | 86 | 84 |
| B1-1 Caja Badajoz | B1-1 Caja Badajoz | B1-1 Caja Badajoz | B1-1 Caja Badajoz | 99 | 86 | | | | | | |

### Intermediate playoff

Winners remain in the category next season and the losers play the second round of the relegation play-off.
| Team 1 | Series | Team 2 | Game 1 | Game 2 | Game 3 |
| CB Guadalajara | 2–1 | Cirsa Hospitalet | 76–71 | 82–89 | 82–72 |
| Loyola Easo | 2–0 | Tenerife AB | 87–80 | 97–79 | 0 |

### Relegation playoffs
#### First Round

| Team 1 | Series | Team 2 | Game 1 | Game 2 | Game 3 |
| Santa Coloma | 1–2 | CAB Cartagena | 77–70 | 69–75 | 73–78 |
| Digsa Loja | 2–0 | CB Azuqueca | 78–76 | 78–69 | 0 |

#### Second Round

| Team 1 | Series | Team 2 | Game 1 | Game 2 | Game 3 | Game 4 | Game 5 |
| Cirsa Hospitalet | 3–2 | Digsa Loja | 103–89 | 70–71 | 84–78 | 81–87 | 95–83 |
| CAB Cartagena | 3–2 | Tenerife AB | 86–68 | 75–89 | 86–74 | 68–75 | 85–72 |

## Final standings

| Pos | Team | Pld | W | L | Qualification or relegation |
| 1 | Gran Canaria (P) | 42 | 31 | 11 | Promoted to ACB |
| 2 | CB Llíria (P) | 42 | 25 | 17 | Promoted to ACB |
| 3 | Prohaci Mallorca | 42 | 25 | 17 | |
| 4 | BC Andorra | 41 | 23 | 18 | |
| 5 | CD Cajamadrid | 39 | 23 | 16 | Resigned to participate next season |
| 6 | ElMonte Huelva | 38 | 19 | 19 | |
| 7 | Caja Badajoz | 39 | 20 | 19 | |
| 8 | Lagisa Gijón | 39 | 20 | 19 | |
| 9 | CB Guadalajara | 39 | 20 | 19 | |
| 10 | Loyola Easo | 38 | 21 | 17 | |
| 11 | CAB Cartagena | 44 | 19 | 25 | Resigned to participate next season |
| 12 | Cirsa Hospitalet | 44 | 19 | 25 | |
| 13 | Tenerife AB (R) | 43 | 17 | 26 | Relegation to Segunda División |
| 14 | Digsa Loja (R) | 34 | 14 | 20 | Relegation to Segunda División |
| 15 | Santa Coloma | 39 | 15 | 24 | Relegation to Segunda División |
| 16 | CB Azuqueca (R) | 38 | 11 | 27 | Relegation to Segunda División |