Kammala jumla mai zuwa: Da yake ci gaba zuwa tawagar 'yan kasa da shekaru 20 na Kanada, ya yi wasan farko na uku na gasar zakarun duniya na matasa a shekarar 2009. An kira shi zuwa ga tawagar a shekara 17, yana daya daga cikin uku
'Yan wasan da suka cancanci shiga kungiyar tare da John Tavares da Evander Kane. Babban Kocin Pat Quinn ya horar da Ellis a baya a Gasar Cin Kofin Duniya ta U18. Ya zaɓi Ellis zuwa ƙungiyar a matsayin mai tsaron gida na takwas, maimakon zaɓar mai tsaron gida na 13, saboda ƙwarewar sa a wasan iko. A wasan kusa da na karshe da Rasha, Ellis ya taimaka wajen daidaita wasan da dakika biyar da suka rage a tsarin. Sau biyu, ya hana puck daga sharewa daga yankin mai kai hari, wanda ya ba da damar yin wasa wanda ya haifar da wasan Jordan Eberle. Kanada ta doke Rasha a wasan harbi kafin ta doke Sweden a wasan karshe don lashe zinare. Ellis ya zira kwallaye bakwai a wasanni shida don kammala na huɗu a tsakanin 'yan wasan tsaron na gasar a ci. Har ila yau, ya kafa rikodin Kanada don mafi yawan maki da mai kare 'yan shekaru 17 ya yi.