Kammala jumla mai zuwa: De la Rose ya wakilci tawagar 'yan kasa da shekaru 18 na kasar Sweden, inda ya lashe lambar azurfa a gasar zakarun duniya ta 2012 ta IIHF U18, wanda aka gudanar a Brno, Znojmo da Břeclav, Jamhuriyar Czech. Ya kuma halarci Gasar Cin Kofin Duniya ta U18 a shekara mai zuwa,
2013, wanda aka gudanar a Sochi, Rasha, inda ya jagoranci tawagar zuwa matsayi na biyar.