 Siegenthaler akakwikwidza neChikwata cheSwitzerland ku2013, 2014 uye 2015IIHF World U18 Championships. Kutamba kwake kwakatanhamara kwakazivikanwa paakatumidzwa zita ku2015 U18 WJC All-Star Team. Akasarudzwawo kuti atore chikamu mu2014 Ivan Hlinka Memorial Tournament. 