See main article: Primera División de México Apertura 2009 Liguilla.
| Primera División de México Apertura 2009 Liguilla Final | |
| Event: | Apertura 2009 Liguilla |
| Team1: | Monterrey |
| Team1association: |  |
| Team1score: | 6 |
| Team2: | Cruz Azul |
| Team2association: | |
| Team2score: | 4 |
| Details: | On aggregate |
| Firstleg: | First leg |
| Team1score1: | 4 |
| Team2score1: | 3 |
| Date1: | December 10, 2009 21:00 (UTC-6) |
| Stadium1: | Estadio Tecnológico |
| City1: | Monterrey, Nuevo León |
| Referee1: | Jorge Gasso (Mexico) [1] |
| Weather1: | Rainy |
| Secondleg: | Second leg |
| Team1score2: | 2 |
| Team2score2: | 1 |
| Date2: | December 13, 2009 18:00 (UTC-6) |
| Stadium2: | Estadio Azul |
| City2: | Benito Juárez, Mexico City |
| Referee2: | Marco Antonio Rodríguez (Mexico) [2] |
| Previous: | Clausura 2009 |
| Next: | Bicentenario 2010 |
The Apertura 2009 Liguilla Final is a two-legged football match-up to determine the Apertura 2009 champion.
After 17 matches on regular season, and 2 two-legged rounds of Liguilla, Cruz Azul and Monterrey have reached the final.
Like other match-ups in the knockout round, the teams will play two games, one at each team's home stadium. As the highest seeded team determined at the beginning of the Liguilla, Cruz Azul was to have home-field advantage for the second leg.
However, the tiebreaking criteria used in previous rounds will not be the same in the final. If the teams remained tied after 90 minutes of play during the 2nd leg, extra time will be used, followed by a penalty shootout if necessary.