The Genève-Servette HC competes in a league know by what name prior to the 2017-2018 season?
National League (ice hockey) The National League (NL) is a professional ice hockey league in Switzerland. It is the top tier of the Swiss hockey league system and of the two-tier National League. Prior to the 2017–18 season, the league was officially called National League A.
GCK Lions GCK Lions is a Swiss professional ice hockey team founded in 1932. They are currently in the National League B, Switzerland's second tier ice hockey division. The home arena is Eishalle Küsnacht (capacity 2,200). The team has won one Swiss Championships, in 1966, as well as two championships in the Swiss second division (National League B), in 1946 and 1963. The name of GCK is derived from "Grasshopper Club Zürich" (GCZ) and "SC Küsnacht" (SCK) — two sports clubs which merged to form GCK.