Rubuta ci gaba ga wannan sakin layi - Siegenthaler ya yi gasa tare da Team Switzerland a 2013, 2014
da kuma 2015 IIHF World U18 Championships. An san wasan nasa na ban mamaki lokacin da aka sanya shi a cikin 2015 U18 WJC All-Star Team. An kuma zaɓe shi don shiga gasar tunawa da Ivan Hlinka a shekarar 2014.