Kammala jumla mai zuwa: McDavid ya fara taka leda a gasar IIHF a 2013 lokacin da ya shiga tawagar 'yan kasa da shekaru 18 na Kanada a gasar
2013 IIHF Gasar Zakarun Duniya ta U18 a Sochi, Rasha. Dan wasa mafi ƙanƙanta a ƙungiyar Kanada, McDavid ya buga wasan farko da Slovakia a ranar 18 ga Afrilu, inda ya zira kwallaye guda ɗaya da taimakawa biyu. Bayan yin rikodin hat-trick a kan Sweden, an zabi McDavid a matsayin mafi kyawun dan wasan Kanada na wasan. Ya jagoranci gasar a raga da maki yayin da yake taimakawa Kanada ta lashe lambar zinare a karo na uku tun lokacin da aka fara gasar a shekarar 1999, inda ya doke zakaran zakara sau hudu, Amurka, a wasan karshe. Jim Nill, sa'an nan kuma babban dan kallo na Detroit Red Wings, ya ce game da aikinsa cewa, "Ina tsammanin za ku iya cewa shi ne irin na Next One. Kowace shekaru da yawa [wani dan wasa ya zo kamar] Gretzky, Lemieux. Ina tsammanin yana yin bayani ne. Shin shi ne [Sidney] Crosby na gaba? Ina ganin shi ne na gaba".