The Algerian Basketball Championship, now called the ABC National 1, formally known as the ABC Super Division, is the pre-eminent men's basketball league in Algeria, National 1 is contested by 16 teams, with the two lowest-placed teams relegated to the Second Division and replaced by the two winner of the playoffs. From the 1963 onwards, GS Pétroliers (19 titles) and WA Boufarik (9 titles) both dominated Also there is Darak El-Watani won 11 titles but it no longer exists, though National 1 also saw other champions, including , , USM Alger, RAM Alger, MC Oran, NB Staouéli, AS PTT Alger and CSM Constantine.