Dee ihe na-aga n'ihu maka paragraf a - Morrissey anọchitewo anya Canada n'ọtụtụ asọmpi mba ụwa, gụnyere IIHF World U18 Championships, Ivan Hlinka Memorial Tournament na IIHF World U20 Championships. Morrissey nyere aka n'inyere ndị otu na-erubeghị afọ iri na asatọ aka inweta ọla edo na 2013 IIHF World U18 Championships
, yana ndị otu egwuregwu n'okpuru afọ 20 na 2015 World Junior Ice Hockey Championship. A họpụtara ya na 2015 World Junior All-Star First Team, na-ejedebe na isi anọ na ọkwa +9 plus-minus.