The Genève-Servette HC competes in a league know by what name prior to the 2017-2018 season?
Genève-Servette HC The Genève-Servette HC (also called "Servette" or "GSHC") is a professional ice hockey club based in Geneva, Switzerland and competing in the National League, the top tier of the Swiss hockey league system. The team plays their home games at the Patinoire des Vernets, which has a seating capacity of 7,135. During the 2015-16 regular season, the GSHC was the fourth most attended team in Switzerland, averaging 6,556 spectators.
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.