Mezue ahịrịokwu a:
2014, Mantha nọchitere anya ndị otu Canada na IIHF World Junior Ice Hockey Championship. Mantha bụ onye na-ebute ụzọ maka Canada, na-edekọ ihe mgbaru ọsọ ise na isii na-enyere aka na egwuregwu asaa, ma kpọọ ya na 2014 WJC All-Star Team.