# 2004–05 Primera División A season

Primera División A (Méxican First A Division) is a Mexican football tournament. This season was composed of Apertura 2004 and Clausura 2005. San Luis was the winner of the promotion to First Division after winning Querétaro in the promotion playoff.

## Changes for the 2004–05 season

* Leones de Morelos was acquired by new owners, for that reason the team was moved to Querétaro and was renamed to Querétaro F.C.
* Azucareros de Córdoba was relocated in Colima and renamed Huracanes de Colima.
* Guerreros de Tlaxcala was relocated to Ciudad Obregón and renamed Pioneros de Obregón.
* C.D. Guadalajara moved its reserve team, Tapatío, to La Piedad and renamed to Chivas La Piedad.
* Atlante F.C. moved its reserve team, Guerreros de Acapulco, to Ciudad Nezahualcóyotl and renamed Potros Neza.
* Tigrillos moved from Mexico City to Los Mochis and became Tigrillos Broncos.
* Pachuca Juniors and Lobos BUAP were promoted from Second Division.

## Stadiums and locations

| Club | Stadium | Capacity | City |
| Atlético Mexiquense | Nemesio Díez | 35,000 | Toluca, State of Mexico |
| Celaya | Miguel Alemán Valdés | 25,000 | Celaya, Guanajuato |
| Chivas La Piedad | Juan N. López | 17,000 | La Piedad, Michoacán |
| Coatzacoalcos | Rafael Hernández Ochoa | 4,800 | Coatzacoalcos, Veracruz |
| Cobras Juárez | Olímpico Benito Juárez | 22,000 | Ciudad Juárez, Chihuahua |
| Correcaminos UAT | Marte R. Gómez | 20,000 | Ciudad Victoria, Tamaulipas |
| Cruz Azul Oaxaca | Benito Juárez | 15,000 | Oaxaca, Oaxaca |
| Durango | Francisco Zarco | 15,000 | Durango, Durango |
| Estudiantes de Santander | Altamira | 13,500 | Altamira, Tamaulipas |
| Huracanes de Colima | Colima | 17,000 | Colima, Colima |
| León | Nou Camp | 35,000 | León, Guanajuato |
| Lobos BUAP | Olímpico BUAP | 20,000 | Puebla, Puebla |
| Mérida F.C. | Carlos Iturralde | 25,000 | Mérida, Yucatán |
| Pachuca Juniors | Hidalgo | 30,000 | Pachuca, Hidalgo |
| Pioneros de Obregón | Manuel Piri Sagasta | 4,000 | Ciudad Obregón, Sonora |
| Potros Neza | Neza 86 | 30,000 | Ciudad Nezahualcóyotl, State of Mexico |
| Querétaro | Corregidora | 35,000 | Querétaro, Querétaro |
| San Luis | Alfonso Lastras | 28,000 | San Luis Potosí, S.L.P. |
| Tabasco | Olímpico de Villahermosa | 12,000 | Villahermosa, Tabasco |
| Tigrillos Broncos | Centenario LM | 7,000 | Los Mochis, Sinaloa |

## Apertura 2004
### Group league tables
#### Group 1

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | San Luis | 19 | 10 | 4 | 5 | 46 | 25 | +21 | 34 |
| 2 | Atlético Mexiquense | 19 | 9 | 5 | 5 | 28 | 19 | +9 | 32 |
| 3 | Tigrillos Broncos | 19 | 8 | 6 | 5 | 25 | 20 | +5 | 30 |
| 4 | Huracanes de Colima | 19 | 6 | 6 | 7 | 21 | 25 | −4 | 24 |
| 5 | Chivas La Piedad | 19 | 4 | 5 | 10 | 28 | 41 | −13 | 17 |

#### Group 2

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Mérida F.C. | 19 | 5 | 11 | 3 | 34 | 30 | +4 | 26 |
| 2 | Pioneros de Obregón | 19 | 7 | 5 | 7 | 24 | 24 | 0 | 26 |
| 3 | Durango | 19 | 5 | 9 | 5 | 27 | 25 | +2 | 24 |
| 4 | Tabasco | 19 | 5 | 7 | 7 | 25 | 39 | −14 | 22 |
| 5 | Coatzacoalcos | 19 | 5 | 4 | 10 | 24 | 32 | −8 | 19 |

#### Group 3

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | León | 19 | 9 | 5 | 5 | 26 | 18 | +8 | 32 |
| 2 | Cruz Azul Oaxaca | 19 | 7 | 5 | 7 | 29 | 28 | +1 | 26 |
| 3 | Celaya | 19 | 6 | 8 | 5 | 23 | 24 | −1 | 26 |
| 4 | Pachuca Juniors | 19 | 5 | 6 | 8 | 26 | 25 | +1 | 21 |
| 5 | Potros Neza | 19 | 5 | 4 | 10 | 21 | 30 | −9 | 19 |

#### Group 4

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Querétaro | 19 | 9 | 5 | 5 | 37 | 32 | +5 | 32 |
| 2 | Cobras | 19 | 9 | 3 | 7 | 22 | 17 | +5 | 30 |
| 3 | Correcaminos UAT | 19 | 8 | 6 | 5 | 24 | 24 | 0 | 30 |
| 4 | Lobos BUAP | 19 | 7 | 6 | 6 | 27 | 26 | +1 | 27 |
| 5 | Estudiantes Santander | 19 | 3 | 6 | 10 | 19 | 32 | −13 | 15 |

### General league table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | San Luis | 19 | 10 | 4 | 5 | 46 | 25 | +21 | 34 |
| 2 | Atlético Mexiquense | 19 | 9 | 5 | 5 | 28 | 19 | +9 | 32 |
| 3 | León | 19 | 9 | 5 | 5 | 26 | 18 | +8 | 32 |
| 4 | Querétaro | 19 | 9 | 5 | 5 | 37 | 32 | +5 | 32 |
| 5 | Tigrillos Broncos | 19 | 8 | 6 | 5 | 25 | 20 | +5 | 30 |
| 6 | Cobras | 19 | 9 | 3 | 7 | 22 | 17 | +5 | 30 |
| 7 | Correcaminos UAT | 19 | 8 | 6 | 5 | 24 | 24 | 0 | 30 |
| 8 | Lobos BUAP | 19 | 7 | 6 | 6 | 27 | 26 | +1 | 27 |
| 9 | Mérida F.C. | 19 | 5 | 11 | 3 | 34 | 30 | +4 | 26 |
| 10 | Cruz Azul Oaxaca | 19 | 7 | 5 | 7 | 29 | 28 | +1 | 26 |
| 11 | Pioneros de Obregón | 19 | 7 | 5 | 7 | 24 | 24 | 0 | 26 |
| 12 | Celaya | 19 | 6 | 8 | 5 | 23 | 24 | −1 | 26 |
| 13 | Durango | 19 | 5 | 9 | 5 | 27 | 25 | +2 | 24 |
| 14 | Huracanes de Colima | 19 | 6 | 6 | 7 | 21 | 25 | −4 | 24 |
| 15 | Tabasco | 19 | 5 | 7 | 7 | 25 | 39 | −14 | 22 |
| 16 | Pachuca Juniors | 19 | 5 | 6 | 8 | 26 | 25 | +1 | 21 |
| 17 | Coatzacoalcos | 19 | 5 | 4 | 10 | 24 | 32 | −8 | 19 |
| 18 | Potros Neza | 19 | 5 | 4 | 10 | 21 | 30 | −9 | 19 |
| 19 | Chivas La Piedad | 19 | 4 | 5 | 10 | 28 | 41 | −13 | 17 |
| 20 | Estudiantes Santander | 19 | 3 | 6 | 10 | 19 | 32 | −13 | 15 |

### Results

| Home \ Away | AMX | CEL | CLP | COA | COB | CRO | DUR | EST | HUC | LEO | LOB | MER | PAC | PIO | PTN | QRO | SNL | TAB | TGR | UAT |
| At. Mexiquense | | | 3–1 | | | 3–2 | | | 2–0 | 2–2 | 1–1 | | 2–0 | 0–0 | | | 0–2 | 1–0 | | 3–0 |
| Celaya | 0–0 | | 3–1 | | | 2–1 | | 1–1 | 1–1 | 0–2 | 1–0 | | | 1–1 | | | 3–2 | | | 1–1 |
| Chivas LP | | | | 3–3 | 4–3 | 0–1 | | | | | | 2–2 | 2–1 | | 0–1 | 3–2 | | | 0–0 | 7–0 |
| Coatzacoalcos | 1–2 | 4–1 | | | 0–1 | | 2–1 | 2–0 | | | 2–2 | 2–3 | | | 2–0 | 0–3 | | | 1–0 | |
| Cobras | 0–1 | 1–0 | | | | | 2–1 | 3–0 | | | | 1–2 | | 1–0 | | 1–2 | 3–1 | | 2–1 | |
| Cruz Azul | | | | 2–2 | 1–1 | | 3–2 | | | | | 2–1 | 1–3 | | 1–2 | 1–2 | | 4–1 | 2–1 | |
| Durango | 3–2 | 0–0 | 4–0 | | | | | 1–0 | 3–0 | 0–2 | | | | 1–0 | | | 3–3 | | | 2–2 |
| Est. Santander | 2–1 | | 1–1 | | | 2–1 | | | 1–2 | 0–1 | 0–0 | | | 2–2 | | | 2–2 | 0–0 | | 0–1 |
| Huracanes | | | 1–1 | 0–0 | 0–1 | 1–1 | | | | 3–0 | | | 3–1 | | 5–1 | | | 2–1 | | 0–3 |
| León | | | 3–0 | 2–0 | 2–1 | 0–1 | | | | | | 1–1 | 1–0 | | 2–1 | 3–1 | | 3–4 | | |
| Lobos BUAP | | | 2–0 | | 1–0 | 1–2 | 1–1 | | 0–1 | 1–1 | | 4–4 | | | | 3–3 | | | 1–0 | 4–1 |
| Mérida | 2–1 | 4–2 | | | | | 1–1 | 2–2 | 0–0 | | | | | 3–1 | | | 1–1 | | 1–2 | 0–1 |
| Pachuca Jrs. | | 0–2 | | 4–0 | 0–0 | | 2–2 | 3–1 | | | 0–1 | 3–3 | | | 1–0 | 3–0 | | | 0–0 | |
| Pioneros | | | 4–1 | 1–0 | | 2–2 | | | 3–1 | 1–0 | 2–0 | | 1–0 | | | | 1–0 | 1–2 | | 1–2 |
| Potros Neza | 0–2 | 1–1 | | | 0–0 | | 0–0 | 4–0 | | | 0–1 | 1–1 | | 4–1 | | 2–1 | | | 1–2 | |
| Querétaro | 1–1 | 1–2 | | | | | 3–2 | 2–1 | 2–0 | | | 3–3 | | 2–2 | | | 2–1 | | 2–1 | |
| San Luis | | | 5–2 | 2–1 | | 4–1 | | | 3–0 | 1–0 | 3–2 | | 2–2 | | 5–0 | | | 6–0 | | 2–0 |
| Tabasco | | 1–1 | | 3–1 | 0–1 | | 0–0 | | | | 1–2 | 0–0 | 2–1 | | 3–2 | 3–3 | | | 2–2 | |
| Tigrillos | 2–1 | 2–1 | | | | | 2–2 | 3–1 | 1–1 | 0–0 | | | | 2–0 | | | 2–1 | | | 2–1 |
| Correcaminos UAT | | | 2–0 | 2–1 | 1–0 | 0–0 | | | | 1–1 | | | 2–2 | | 2–1 | 0–2 | | 2–2 | | |

### Reclasification series

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| Tigrillos Broncos | 3–2 | Pioneros de Obregón | 1–2 | 2–0 |
| Correcaminos UAT | 4–3 | Cruz Azul Oaxaca | 0–3 | 4–0 |

#### Second leg
### Liguilla

| Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Semi-finals | Semi-finals | Semi-finals | Semi-finals | Semi-finals | Final | Final | Final | Final | Final |
| 1 | San Luis | 0 | 4 | 4 | | | | | | | | | | |
| 8 | Mérida F.C. | 1 | 3 | 4 | | | | | | | | | | |
| 8 | Mérida F.C. | 1 | 3 | 4 | 1 | San Luis | 1 | 5 | 6 | | | | | |
| | | | | | 6 | Cobras | 1 | 1 | 2 | | | | | |
| 3 | León | 0 | 3 | 3 | 6 | Cobras | 1 | 1 | 2 | | | | | |
| 6 | Cobras | 2 | 2 | 4 | | | | | | | | | | |
| 6 | Cobras | 2 | 2 | 4 | | | | | | 1 | San Luis | 0 | 3 | 3 |
| | | | | | | | | | | 2 | Atlético Mexiquense | 1 | 1 | 2 |
| 2 | Atlético Mexiquense | 0 | 2 | 2 | | | | | | | | | | | 2 | Atlético Mexiquense | 1 | 1 | 2 |
| 7 | Correcaminos UAT | 0 | 1 | 1 | | | | | | | | | | |
| 7 | Correcaminos UAT | 0 | 1 | 1 | 2 | Atlético Mexiquense | 1 | 4 | 5 | | | | | |
| | | | | | 4 | Querétaro | 0 | 3 | 3 | | | | | |
| 4 | Querétaro | 3 | 2 | 5 | 4 | Querétaro | 0 | 3 | 3 | | | | | |
| 5 | Tigrillos Broncos | 2 | 2 | 4 | | | | | | | | | | |

#### Quarter-finals

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| San Luis | 4–4 | Mérida | 0–1 | 4–3 |
| León | 3–4 | Cobras | 0–2 | 3–2 |
| Atlético Mexiquense | 2–1 | Correcaminos UAT | 0–0 | 2–1 |
| Querétaro | 5–4 | Tigrillos Broncos | 3–2 | 2–2 |

##### Second leg
#### Semi-finals

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| San Luis | 6–2 | Cobras | 1–1 | 5–1 |
| Atlético Mexiquense | 5–3 | Querétaro | 1–0 | 4–3 |

##### Second leg
#### Final

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| San Luis | 3–2 | Atlético Mexiquense | 0–1 | 3–1 |

##### Second leg

* Apertura 2004 winners
* San Luis 2nd title

## Clausura 2005
### Group league tables
#### Group 1

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Huracanes de Colima | 19 | 10 | 4 | 5 | 34 | 21 | +13 | 34 |
| 2 | San Luis | 19 | 9 | 6 | 4 | 33 | 21 | +12 | 33 |
| 3 | Tigrillos Broncos | 19 | 9 | 2 | 8 | 36 | 40 | −4 | 29 |
| 4 | Atlético Mexiquense | 19 | 5 | 4 | 10 | 24 | 33 | −9 | 19 |
| 5 | Chivas La Piedad | 19 | 3 | 8 | 8 | 14 | 32 | −18 | 17 |

#### Group 2

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Coatzacoalcos | 19 | 8 | 5 | 6 | 29 | 23 | +6 | 29 |
| 2 | Durango | 19 | 8 | 4 | 7 | 22 | 22 | 0 | 28 |
| 3 | Pioneros de Obregón | 19 | 6 | 6 | 7 | 25 | 28 | −3 | 24 |
| 4 | Mérida | 19 | 6 | 5 | 8 | 32 | 32 | 0 | 23 |
| 5 | Tabasco | 19 | 3 | 8 | 8 | 27 | 34 | −7 | 17 |

#### Group 3

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Cruz Azul Oaxaca | 19 | 10 | 5 | 4 | 42 | 29 | +13 | 35 |
| 2 | Pachuca Juniors | 19 | 10 | 3 | 6 | 25 | 23 | +2 | 33 |
| 3 | León | 19 | 10 | 2 | 7 | 34 | 25 | +9 | 32 |
| 4 | Celaya | 19 | 9 | 5 | 5 | 26 | 23 | +3 | 32 |
| 5 | Potros Neza | 19 | 8 | 4 | 7 | 29 | 27 | +2 | 28 |

#### Group 4

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Querétaro | 19 | 7 | 5 | 7 | 28 | 25 | +3 | 26 |
| 2 | Cobras | 19 | 5 | 9 | 5 | 26 | 25 | +1 | 24 |
| 3 | Lobos BUAP | 19 | 5 | 6 | 8 | 24 | 27 | −3 | 21 |
| 4 | Correcaminos UAT | 19 | 5 | 3 | 11 | 29 | 43 | −14 | 18 |
| 5 | Estudiantes Santander | 19 | 3 | 8 | 8 | 20 | 26 | −6 | 17 |

### General league table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Cruz Azul Oaxaca | 19 | 10 | 5 | 4 | 42 | 29 | +13 | 35 |
| 2 | Huracanes de Colima | 19 | 10 | 4 | 5 | 34 | 21 | +13 | 34 |
| 3 | San Luis | 19 | 9 | 6 | 4 | 33 | 21 | +12 | 33 |
| 4 | Pachuca Juniors | 19 | 10 | 3 | 6 | 25 | 23 | +2 | 33 |
| 5 | León | 19 | 10 | 2 | 7 | 34 | 25 | +9 | 32 |
| 6 | Celaya | 19 | 9 | 5 | 5 | 26 | 23 | +3 | 32 |
| 7 | Coatzacoalcos | 19 | 8 | 5 | 6 | 29 | 23 | +6 | 29 |
| 8 | Tigrillos Broncos | 19 | 9 | 2 | 8 | 36 | 40 | −4 | 29 |
| 9 | Potros Neza | 19 | 8 | 4 | 7 | 29 | 27 | +2 | 28 |
| 10 | Durango | 19 | 8 | 4 | 7 | 22 | 22 | 0 | 28 |
| 11 | Querétaro | 19 | 7 | 5 | 7 | 28 | 25 | +3 | 26 |
| 12 | Cobras | 19 | 5 | 9 | 5 | 26 | 25 | +1 | 24 |
| 13 | Pioneros de Obregón | 19 | 6 | 6 | 7 | 25 | 28 | −3 | 24 |
| 14 | Mérida | 19 | 6 | 5 | 8 | 32 | 32 | 0 | 23 |
| 15 | Lobos BUAP | 19 | 5 | 6 | 8 | 24 | 27 | −3 | 21 |
| 16 | Atlético Mexiquense | 19 | 5 | 4 | 10 | 24 | 33 | −9 | 19 |
| 17 | Correcaminos UAT | 19 | 5 | 3 | 11 | 29 | 43 | −14 | 18 |
| 18 | Estudiantes Santander | 19 | 3 | 8 | 8 | 20 | 26 | −6 | 17 |
| 19 | Tabasco | 19 | 3 | 8 | 8 | 27 | 34 | −7 | 17 |
| 20 | Chivas La Piedad | 19 | 3 | 8 | 8 | 14 | 32 | −18 | 17 |

### Results

| Home \ Away | AMX | CEL | CLP | COA | COB | CRO | DUR | EST | HUC | LEO | LOB | MER | PAC | PIO | PTN | QRO | SNL | TAB | TGR | UAT |
| At. Mexiquense | | 2–3 | | 1–2 | | | 2–2 | 1–0 | | | | 0–5 | | | 1–1 | | | | 2–0 | |
| Celaya | | | | 1–1 | 2–1 | | 1–0 | | | | | | 1–3 | | 1–2 | 4–2 | | 3–2 | | |
| Chivas LP | 1–0 | 1–2 | | | | | 1–0 | 1–1 | 1–1 | | | | | 1–1 | | | 0–0 | | | 1–1 |
| Coatzacoalcos | | | 3–0 | | | 3–3 | | | | 3–1 | | | 0–1 | 1–2 | | | | 2–0 | | 4–1 |
| Cobras | | | 0–0 | | | 2–2 | | | 0–2 | 1–1 | 3–2 | | | | 1–1 | | | 1–1 | | 4–1 |
| Cruz Azul | 1–0 | 2–0 | 7–1 | | | | | 2–1 | 3–2 | 2–4 | 2–1 | | | 2–0 | | | 1–1 | | | 3–0 |
| Durango | | | | 0–0 | 0–0 | 2–1 | | | | | | | 2–1 | | 2–4 | 1–0 | | 2–0 | | |
| Est. Santander | | 1–1 | | 1–1 | 2–3 | | 0–1 | | | | | | 0–2 | | 3–1 | | | | 0–0 | |
| Huracanes | | 1–0 | | | | | 1–0 | | | | 3–0 | 3–0 | | 3–1 | | 0–0 | 3–1 | | 1–2 | |
| León | 1–4 | | | | | | | 4–1 | 0–1 | | 2–1 | | | 1–1 | | | 1–0 | | 4–2 | 4–2 |
| Lobos BUAP | 1–1 | 0–1 | | 3–1 | | | | 1–1 | | | | | 0–1 | | | | 1–1 | 0–0 | | |
| Mérida | | | 2–1 | 3–1 | 1–1 | | | | | 1–0 | 2–3 | | 2–2 | | 2–3 | 3–2 | | | | |
| Pachuca Jrs. | 2–1 | | 2–0 | | | 1–0 | | | | 0–1 | | | | 1–1 | | | 1–0 | 0–2 | | |
| Pioneros | 3–0 | 0–1 | | | | | 1–1 | 2–1 | | | | 2–1 | | | | 2–1 | | | 1–3 | |
| Potros Neza | | | 4–1 | | | 2–0 | | | 2–2 | 2–1 | | | 2–0 | | | | | 1–0 | | 0–1 |
| Querétaro | | | 1–1 | 0–2 | 2–0 | 2–2 | | | | 1–0 | 1–2 | | | | 2–0 | | | | | 4–1 |
| San Luis | | 2–2 | | | 0–0 | | 4–0 | 1–4 | | | | 2–1 | | | | 3–0 | | | 3–0 | |
| Tabasco | 2–2 | | 1–2 | | | 2–3 | | 1–1 | 2–2 | | | | | 1–1 | | | 1–3 | | | |
| Tigrillos | | | | 2–1 | 4–2 | | | | | | 2–1 | 2–0 | 5–3 | | 3–2 | 2–4 | | 3–3 | | |
| Correcaminos UAT | 3–1 | | | | | | 1–0 | | 1–3 | | 2–3 | 2–1 | | 4–0 | | | 1–2 | | 4–2 | |

### Reclasification series

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| León | 5–1 | Cobras | 0–0 | 5–1 |
| Celaya | 2–4 | Durango | 1–2 | 1–2 |

#### Second leg
### Liguilla

| Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Semi-finals | Semi-finals | Semi-finals | Semi-finals | Semi-finals | Final | Final | Final | Final | Final |
| 4 | Pachuca Jrs. | 0 | 1 | 1 | | | | | | | | | | |
| 5 | León | 2 | 4 | 6 | | | | | | | | | | |
| 5 | León | 2 | 4 | 6 | 6 | León | 0 | 3 | 3 | | | | | |
| | | | | | 7 | Coatzacoalcos | 0 | 1 | 1 | | | | | |
| 3 | San Luis | 1 | 1 | 2 | 7 | Coatzacoalcos | 0 | 1 | 1 | | | | | |
| 7 | Coatzacoalcos | 2 | 1 | 3 | | | | | | | | | | |
| 7 | Coatzacoalcos | 2 | 1 | 3 | | | | | | 6 | León | 1 | 1 | 2 |
| | | | | | | | | | | 11 | Querétaro | 2 | 1 | 3 |
| 2 | Huracanes | 2 | 2 | 4 | | | | | | | | | | | 11 | Querétaro | 2 | 1 | 3 |
| 10 | Durango | 2 | 1 | 3 | | | | | | | | | | |
| 10 | Durango | 2 | 1 | 3 | 2 | Huracanes | 0 | 0 | 0 | | | | | |
| | | | | | 11 | Querétaro | 3 | 3 | 6 | | | | | |
| 1 | Cruz Azul Oaxaca | 0 | 2 | 2 | 11 | Querétaro | 3 | 3 | 6 | | | | | |
| 11 | Querétaro | 1 | 2 | 3 | | | | | | | | | | |

#### Quarter-finals

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| Pachuca Jrs. | 1–6 | León | 0–2 | 1–4 |
| San Luis | 2–3 | Coatzacoalcos | 1–2 | 1–1 |
| Huracanes | 4–3 | Durango | 2–2 | 2–1 |
| Cruz Azul Oaxaca | 2–3 | Querétaro | 0–1 | 2–2 |

##### Second leg
#### Semi-finals

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| León | 3–1 | Coatzacoalcos | 0–0 | 3–1 |
| Huracanes | 0–6 | Querétaro | 0–3 | 0–3 |

##### Second leg
#### Final

| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| León | 2–3 | Querétaro | 1–2 | 1–1 |

##### Second leg

* Clausura 2005 winners
* Querétaro 1st title

## Relegation table

| Pos. | Team | Pld. | Pts. | Ave. | GD |
| 16. | Mérida | 113 | 140 | 1.2389 | -5 |
| 17. | Pioneros de Obregón | 113 | 138 | 1.2212 | -35 |
| 18. | Potros Neza | 113 | 135 | 1.1947 | -27 |
| 19. | Chivas La Piedad | 113 | 135 | 1.1947 | -34 |
| 20. | Estudiantes de Santander | 113 | 132 | 1.1681 | -19 |

## Campeón de Ascenso 2005

The Promotion Final faced San Luis against Querétaro to determine the winner of the First Division Promotion. San Luis was the winner.
| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| San Luis | 3–2 | Querétaro | 1–2 | 2–0 |

### Second leg

* Champions
* San Luis 2nd title

### Relegation play-out

The Football Association determined the celebration of a promotion series between the penultimate team of the Primera 'A' Relegation Table against the runner-up of the Second Division, this series faced Chivas La Piedad against the Cachorros UdeG. Chivas La Piedad won the series and remained in the category.
| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
| Chivas La Piedad | 4–1 | Cachorros UdeG | 2–0 | 2–1 |