 Nyorai kuenderera mberi kweiyi ndima - Hollenstein akatumidzwa zita kuSwitzerland U20 timu yenyika ye2019 World Junior Championships muCanada. Akatungamirira Switzerland kusvika kunzvimbo yechina, ichidonha kuFinland mumasemifainari. Hollenstein aive zvakare chikamu chechikwata che2020 World Junior ChampionshipsmuCzech Republic. 