The Primera B de Chile season was the 59th completed season of the Primera B de Chile in the Chilean football league system.
| Season | 2009 Primera B |
|---|---|
| Champions | Unión San Felipe |
| Promoted | Unión San Felipe Santiago Wanderers San Luis de Quillota |
| Relegated | Deportes Melipilla |
← 2008 2010 → | |
Torneo Apertura
Unión San Felipe was tournament’s champion.[1]
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Unión San Felipe | 19 | 12 | 4 | 3 | 35 | 18 | +17 | 40 |
| 2 | Santiago Wanderers | 19 | 9 | 6 | 4 | 33 | 19 | +14 | 33 |
| 3 | San Luis de Quillota | 19 | 8 | 7 | 4 | 25 | 12 | +13 | 31 |
| 4 | Deportes Melipilla | 19 | 8 | 6 | 5 | 30 | 28 | +2 | 30 |
| 5 | San Marcos de Arica | 19 | 7 | 6 | 6 | 17 | 21 | −4 | 27 |
| 6 | Coquimbo Unido | 19 | 7 | 5 | 7 | 21 | 20 | +1 | 26 |
| 7 | Lota Schwager | 19 | 7 | 5 | 7 | 21 | 25 | −4 | 26 |
| 8 | Provincial Osorno | 19 | 6 | 7 | 6 | 22 | 27 | −5 | 25 |
| 9 | Deportes Antofagasta | 19 | 5 | 8 | 6 | 26 | 26 | 0 | 23 |
| 10 | Naval | 19 | 6 | 5 | 8 | 20 | 24 | −4 | 23 |
| 11 | Deportes Puerto Montt | 19 | 5 | 5 | 9 | 26 | 30 | −4 | 20 |
| 12 | Unión La Calera | 19 | 4 | 7 | 8 | 27 | 31 | −4 | 19 |
| 13 | Deportes Concepción | 19 | 4 | 6 | 9 | 25 | 35 | −10 | 18 |
| 14 | Deportes Copiapó | 19 | 4 | 5 | 10 | 12 | 24 | −12 | 17 |
Torneo Clausura
San Luis de Quillota was tournament’s champion.[2]
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
|---|---|---|---|---|---|---|---|---|---|
| 1 | San Luis de Quillota | 19 | 11 | 6 | 2 | 24 | 12 | +12 | 39 |
| 2 | Santiago Wanderers | 19 | 10 | 8 | 1 | 29 | 12 | +17 | 38 |
| 3 | Unión San Felipe | 19 | 11 | 4 | 4 | 33 | 15 | +18 | 37 |
| 4 | Deportes Antofagasta | 19 | 8 | 4 | 7 | 25 | 30 | −5 | 28 |
| 5 | Deportes Concepción | 19 | 7 | 5 | 7 | 29 | 22 | +7 | 26 |
| 6 | San Marcos de Arica | 19 | 6 | 8 | 5 | 29 | 30 | −1 | 26 |
| 7 | Coquimbo Unido | 19 | 6 | 7 | 6 | 28 | 31 | −3 | 25 |
| 8 | Provincial Osorno | 19 | 6 | 6 | 7 | 35 | 32 | +3 | 24 |
| 9 | Deportes Puerto Montt | 19 | 5 | 6 | 8 | 22 | 24 | −2 | 21 |
| 10 | Naval | 19 | 4 | 9 | 6 | 16 | 26 | −10 | 21 |
| 11 | Unión La Calera | 19 | 3 | 8 | 8 | 19 | 29 | −10 | 17 |
| 12 | Deportes Melipilla | 19 | 8 | 4 | 7 | 35 | 30 | +5 | 13[a] |
| 13 | Deportes Copiapó | 19 | 3 | 4 | 12 | 15 | 30 | −15 | 13 |
| 14 | Lota Schwager | 19 | 3 | 5 | 11 | 18 | 31 | −13 | 8[b] |
Notes:
Final of Champions
In order to determine the 2nd promoted team to Primera División, the two best teams from both Apertura and Clausura tournaments will face in a two-legged tie. The winning team will be promoted, while the losing team will qualify to the promotion play-offs.
As Apertura winners Unión San Felipe were already promoted due to the overall table (77 pts.), their spot was awarded to Santiago Wanderers, which were finished in 2nd place. San Luis de Quillota had their spot granted as Clausura winners.
| San Luis de Quillota | 1–2 | Santiago Wanderers |
|---|---|---|
Zarosa  31' | Report | López 30' Jiménez 64' |
| Santiago Wanderers | 1–1 | San Luis de Quillota |
|---|---|---|
| Alfaro 4' | Report | Flores 65' (pen.) |
Santiago Wanderers won 3–2 on aggregate and were promoted to Primera División.
Promotion play-offs
San Luis de Quillota, as losers of the Final of Champions, and San Marcos de Arica, 4th place of the overall table, faced Palestino and Curicó Unido, placed 15th and 16th in Primera División respectively, for the final two spots to the top-flight division. The play-offs were split into two draws involving a Primera Disivión team against a Primera B team, in two-legged ties.
Draw A
| San Luis de Quillota | 1–2 | Curicó Unido |
|---|---|---|
| Pierani 14' | Report | Albornoz 11', 48' |
| Curicó Unido | 0–3 | San Luis de Quillota |
|---|---|---|
| Report | Alves Machado 50' Flores 63' (pen.)Danesi 90+1' |
San Luis de Quillota won 4–2 on aggregate and were promoted to Primera División. Curicó Unido were relegated to Primera B.
Draw B
| San Marcos de Arica | 0–2 | Palestino |
|---|---|---|
| Report | Pereira 7' Ibáñez 62' |
| Palestino | 0–2 (a.e.t.) | San Marcos de Arica |
|---|---|---|
| Report | Gálvez 73' Celedón 78' | |
| Penalties | ||
Olea  Riquelme Ibáñez Pavez | 4–2 |  Montecinos A. González Pérez V. González |
2–2 on aggregate. Palestino won 4–2 on penalties and remain in Primera División. San Marcos de Arica remain in Primera B.