19-year-old Stettler, who is part of the SCL Tigers' organization, has already played four games for Winterthur this season. The loan agreement with the Tigers has been extended until the end of the season.
Joel Messerli is under contract with EHC Bülach. He, too, will suit up for the Swiss League team until the end of the season and get the opportunity to gain some experience in the Swiss League.
Gianola, for his part, is a product of EHC Winterthur's organization. The 21-year-old goaltender has also already played five games for the Lions this season, posting a .872 save percentage.