Dee ihe na-esote paragraf a - Holmström nọchitere anya Sweden na 2013 Ivan Hlinka Memorial Tournament, ebe o dekọtara otu enyemaka na egwuregwu anọ. O mechara nọchite anya Sweden na 2014 IIHF World U18 Championships
, ebe ọ bụ onye nke abụọ na-ebute ihe mgbaru ọsọ n'oge asọmpi ahụ, na-edekọ ihe mgbaru ọsọ atọ na enyemaka asatọ na egwuregwu asaa. Holmström nọchitere anya Sweden na 2015 World Junior Ice Hockey Championship, ebe o dekọtara otu ihe mgbaru ọsọ na isii na-enyere aka na egwuregwu asaa. Holmström nọchitere anya Sweden ọzọ na 2016 World Junior Ice Hockey Championship, ebe o dere otu ihe mgbaru ọsọ na ise na-enyere aka na egwuregwu asaa.