Pedzisa mutsara unotevera:
2015 IIHF World Junior Championship, Demko ndiye akanga ari muchengeti wemagariro ekutanga, achitanga mumitambo 7 ye8. Pasinei nekubviswa kwechikwata ichi muQuarterfinals, Demko akapedza wechitatu mumakwikwi pakati pevarindi vemagariro ne1.74 GAA uye.938 kuchengetedza muzana.