Nyora kupfuurira kweiyi ndima - Gore rakatevera, pa2015 IIHF World Junior Championship
, Demko akanga ari muchengeti wemagariro anotanga, achitanga mumitambo 7 ye8. Pasinei nekubviswa kwechikwata ichi muQuarterfinals, Demko akapedza wechitatu mumakwikwi pakati pevarindi vemagariro ne1.74 GAA uye.938 kuchengetedza muzana.