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.
2017–18 Champions Hockey League The 2017–18 Champions Hockey League is the fourth season of the Champions Hockey League, a European ice hockey tournament. The tournament was reduced to 32 teams, and qualification was on sporting merits only. The six founding leagues are represented by between three and five teams (based on a three-year league ranking), while seven "challenge leagues" are represented by one team each. One place was reserved for the Continental Cup champion. Unlike in the three previous editions, founding teams didn't automatically qualify.