Pedzisa mutsara unotevera: Hollenstein akatumidzwa kuSwitzerland U20 national team nokuda kwe
2019 World Junior Championships muCanada. Akatungamirira Switzerland kusvika kunzvimbo yechina, ichidonha kuFinland mumasemifainari. Hollenstein aive zvakare chikamu chechikwata che2020 World Junior Championships muCzech Republic.