Pedzisa mutsara unotevera: 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. Achitamba pamutsetse wapamusoro naSam Reinhart naConnor McDavid, Klimchuk akawana mapoinzi masere kuti abatsire kutungamirira Canada kunotora menduru yegoridhe pa
2013 IIHF World U18 Championships.