Club Deportivo Guadalajara , (often simply known as Guadalajara) is a Mexican professional football club based in Guadalajara, Jalisco. Guadalajara plays in the Primera División de México (Mexican First Division) and is the most successful club in Mexican football, having won 11 First Division titles, 7 Campeón de Campeones, 1  InterLiga, 1 Copa Challenger, 4 Copa Oros de Occidente, and 2 Copa México. Guadalajara is one of the ten founding members of the Mexican First Division and along with longstanding rivals Club América it has never been relegated to the second-tier division. Most recently, Guadalajara is the runner-up of the 2010 Copa Libertadores.