Nyora kupfuurira kweiyi ndima - Mumwaka wake wechipiri weWHL, 2012<unk>13, Klimchuk akavandudza kusvika pamapoinzi makumi manomwe nematanhatu uye akapedza wechipiri mukutora timu. Akaita kuoneka kaviri nechikwata chenyika cheCanada pasi pe-18. Aive nhengo yechikwata cheCanada chakahwina menduru yegoridhe pa2012 Ivan Hlinka Memorial Tournament. Kutamba pamutsetse wepamusoro naSam Reinhart naConnor McDavid, Klimchuk akawana mapoinzi masere kubatsira kutungamira Canada kumenduru yegoridhe pa2013 IIHF World U18 Championships
.