# 2009–10 Liga Nacional de Básquet season

The 2009–10 Liga Nacional de Básquet season was the 26th season of the top professional basketball league in Argentina. The regular season started on 7 October 2009. Peñarol won their second title, defeating Atenas in the finals.

## Promotions and relegations

Torneo Nacional de Ascenso Champions from the previous season La Unión and runners-up Unión de Sunchales were promoted, occupying the berths left by Ben Hur and Monte Hermoso. Central Enterriano, also from the second-tier tournament, traded places with Independiente de Neuquén, who had to sell their berth due to financial difficulties.

## Clubs

| Team | City | Arena | Capacity |
| Atenas | Córdoba | Carlos Cerutti | 3,730 |
| Bahía Blanca Estudiantes | Bahía Blanca | Osvaldo Casanova | 3,950 |
| Boca Juniors | Buenos Aires | Luis Conde | 2,000 |
| Central Enterriano | Gualeguaychú | Estadio José María Bértora | 2,000 |
| Ciclista Olímpico | La Banda | Luis Conde | 2,000 |
| Gimnasia y Esgrima (Comodoro Rivadavia) | Comodoro Rivadavia | Socios Fundadores | 2,276 |
| Juventud Sionista | Paraná | Estadio Moisés Flesler | 2,100 |
| Lanús | Lanús | Antonio Rotili | 4,000 |
| Libertad | Sunchales | El Hogar de los Tigres | 4,000 |
| Obras Sanitarias | Buenos Aires | Estadio Obras | 3,100 |
| Peñarol | Mar del Plata | Islas Malvinas | 8,000 |
| Quilmes | Mar del Plata | Estadio Once Unidos | 2,000 |
| Quimsa | Santiago del Estero | Estadio Ciudad | 5,200 |
| Regatas Corrientes | Corrientes | José Jorge Contte | 4,000 |
| La Unión | Formosa | Cincuentenario | 4,500 |
| Unión de Sunchales | Sunchales | La Fortaleza del Bicho Coliseo del Sur | |

## Regular season
### First stage

The first stage took place between 7 October and 25 November 2009. Teams were divided into two zones. The top three teams from each zone plus the best fourth team overall and a wildcard competed in the Torneo Súper 8 that took place in December.

#### North Zone

| Pos | Team | Pld | W | L | Pts | Qualification |
| 1 | Atenas | 14 | 9 | 5 | 23 | Qualified to Torneo Súper 8 |
| 2 | Quimsa | 14 | 9 | 5 | 23 | Qualified to Torneo Súper 8 |
| 3 | Juventud Sionista | 14 | 9 | 5 | 23 | Qualified to Torneo Súper 8 |
| 4 | Libertad | 14 | 7 | 7 | 21 | Qualified to Torneo Súper 8 |
| 5 | La Unión | 14 | 7 | 7 | 21 | |
| 6 | Unión de Sunchales | 14 | 6 | 8 | 20 | |
| 7 | Regatas Corrientes | 14 | 6 | 8 | 20 | |
| 8 | Ciclista Olímpico | 14 | 1 | 13 | 15 | |
* 1 2 Libertad wins head-to-head against La Unión 2–0.

#### South Zone

| Pos | Team | Pld | W | L | Pts | Qualification |
| 1 | Peñarol | 14 | 10 | 4 | 24 | Qualified to Torneo Súper 8 |
| 2 | Boca Juniors | 14 | 9 | 5 | 23 | Qualified to Torneo Súper 8 |
| 3 | Obras Sanitarias | 14 | 8 | 6 | 22 | Qualified to Torneo Súper 8 |
| 4 | Central Enterriano | 14 | 7 | 7 | 21 | |
| 5 | Quilmes | 14 | 7 | 7 | 21 | Qualified to Torneo Súper 8 (wildcard) |
| 6 | Lanús | 14 | 5 | 9 | 19 | |
| 7 | Gimnasia y Esgrima (CR) | 14 | 5 | 9 | 19 | |
| 8 | Bahía Blanca Estudiantes | 14 | 5 | 9 | 19 | |

### Torneo Súper 8

The sixth edition of Torneo Súper 8 took place on 17–20 December 2009 in the city of Mar del Plata. Peñarol won their second title, defeating Atenas in the Final.
| Quarterfinals | Quarterfinals | Semifinals | Semifinals | Final | Final |
| Juventud Sionista | 94 | | | | |
| Quimsa | 77 | | | | |
| Quimsa | 77 | Juventud Sionista | 65 | | |
| | | Peñarol | 78 | | |
| Peñarol | 93 | Peñarol | 78 | | |
| Quilmes | 87 | | | | |
| Quilmes | 87 | | | Peñarol | 74 |
| | | | | Atenas | 67 |
| Atenas | 80 | | | | | Atenas | 67 |
| Obras Sanitarias | 66 | | | | |
| Obras Sanitarias | 66 | Atenas | 75 | | |
| | | Boca Juniors | 71 | | |
| Boca Juniors | 87 | Boca Juniors | 71 | | |
| Libertad | 73 | | | | |

### Second stage

The second stage started on 27 November 2010. All 16 teams were ranked together. Each team carried over half of the points obtained in the first stage.
| Pos | Team | Pld | W | L | Pts | Qualification or relegation |
| 1 | Peñarol | 30 | 23 | 7 | 65 | Quarterfinals |
| 2 | Atenas | 30 | 22 | 8 | 63.5 | Quarterfinals |
| 3 | Juventud Sionista | 30 | 17 | 13 | 58.5 | Quarterfinals |
| 4 | Libertad | 30 | 17 | 13 | 57.5 | Quarterfinals |
| 5 | Boca Juniors | 30 | 16 | 14 | 57.5 | Reclassification playoffs |
| 6 | Quimsa | 30 | 15 | 15 | 56.5 | Reclassification playoffs |
| 7 | La Unión | 30 | 16 | 14 | 56.5 | Reclassification playoffs |
| 8 | Unión de Sunchales | 30 | 17 | 13 | 56 | Reclassification playoffs |
| 9 | Regatas Corrientes | 30 | 16 | 14 | 55 | Reclassification playoffs |
| 10 | Lanús | 30 | 14 | 16 | 53.5 | Reclassification playoffs |
| 11 | Bahía Blanca Estudiantes | 30 | 13 | 17 | 52.5 | Reclassification playoffs |
| 12 | Obras Sanitarias | 30 | 11 | 19 | 52 | Reclassification playoffs |
| 13 | Gimnasia y Esgrima (CR) | 30 | 12 | 18 | 51.5 | Relegation playoffs |
| 14 | Quilmes | 30 | 11 | 19 | 51.5 | Relegation playoffs |
| 15 | Ciclista Olímpico | 30 | 14 | 16 | 51 | Relegation playoffs |
| 16 | Central Enterriano | 29 | 6 | 23 | 45.5 | Relegation playoffs |

## Playoffs
### Championship playoffs

The Playoffs started on 31 March 2011 and ended on 25 May 2011. Peñarol defeated Atenas in the Finals.
| Reclassification | Reclassification | Reclassification | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Final | Final | Final |
| | | | 1 | Peñarol | 3 | | | | | | |
| | | | 10 | Lanús | 0 | | | | | | |
| 7 | La Unión | 2 | 10 | Lanús | 0 | | | | | | |
| 10 | Lanús | 3 | | | | | | | | | |
| 10 | Lanús | 3 | | | | 1 | Peñarol | 3 | | | |
| | | | | | | 10 | Boca Juniors | 0 | | | |
| | | | 4 | Libertad | 1 | | | | | | |
| | | | 5 | Boca Juniors | 3 | | | | | | |
| 5 | Boca Juniors | 3 | 5 | Boca Juniors | 3 | | | | | | |
| 12 | Obras Sanitarias | 0 | | | | | | | | | |
| 12 | Obras Sanitarias | 0 | | | | | | | 1 | Peñarol | 4 |
| | | | | | | | | | 2 | Atenas | 1 |
| | | | 2 | Atenas | 3 | | | | | | |
| | | | 9 | Regatas Corrientes | 2 | | | | | | |
| 8 | Unión de Sunchales | 1 | 9 | Regatas Corrientes | 2 | | | | | | |
| 9 | Regatas Corrientes | 3 | | | | | | | | | |
| 9 | Regatas Corrientes | 3 | | | | 2 | Atenas | 3 | | | |
| | | | | | | 3 | Juventud Sionista | 2 | | | |
| | | | 3 | Juventud Sionista | 3 | | | | | | |
| | | | 6 | Quimsa | 1 | | | | | | |
| 6 | Quimsa | 3 | 6 | Quimsa | 1 | | | | | | |
| 11 | Bahía Blanca Estudiantes | 1 | | | | | | | | | |

### Relegation playoffs

The relegation series began on 2 April. Central Entrerriano and Quilmes lost their respective series and were relegated to the Torneo Nacional de Ascenso.
| Finals | Finals | Finals |
| 13 | Gimnasia y Esgrima (CR) | 3 |
| 16 | Central Entrerriano | 0 |
| Finals | Finals | Finals |
| 14 | Quilmes | 2 |
| 15 | Ciclista Olímpico | 3 |

## Clubs in international competitions

| Team | Competition | Progress |
| Atenas | FIBA Americas League | Group stage |
| Obras Sanitarias | FIBA Americas League | Group stage |
| Peñarol | FIBA Americas League | Champions |
| Quimsa | FIBA Americas League | Final four |
| Libertad | Liga Sudamericana de Básquetbol | Final four |
| Juventud Sionista | Liga Sudamericana de Básquetbol | Final four |
| Quimsa | Liga Sudamericana de Básquetbol | Champions |

## Awards
### Yearly Awards

* Most Valuable Player: Leonardo Gutiérrez, Peñarol
* All-Tournament Team:
** F Leonardo Gutiérrez, Peñarol
** F Juan Locatelli, Atenas
** C Román González, Quimsa
** G Juan Pablo Figueroa, Atenas
** G David Jackson, Libertad