The "Algerian Ligue Professionnelle 1" (Arabic: الرابطة الجزائرية المحترفة الأولى لكرة القدم‎); known as "Championnat National de Première Division" or "Ligue 1" for short.It is the country's primary football competition and serves as the top division of the Algerian football league system. Ligue 1 is one of two divisions making up the Ligue de Football Professionnel, the other being Ligue Professionnelle 2. The league is contested by 16 clubs, and it operates on a system of promotion and relegation with Ligue 2