Faatumu le fuaiupu lenei: Siegenthaler tauva ma Team Switzerland i le
2013, 2014 ma le 2015 IIHF World U18 Championships. O lana taʻaloga mataʻina na amanaʻia ina ua filifilia o ia i le 2015 U18 WJC All-Star Team. Na filifilia foi o ia e auai i le 2014 Ivan Hlinka Memorial Tournament.