Kammala jumla mai zuwa: Bayan ya buga wa St. Louis AAA Blues U16 kuma ya yi alkawarin shirin ci gaban kungiyar kwallon kafa ta Amurka (USNDPT), Tkachuk ya amince ya buga wa Jami'ar Boston wasa bayan ya kammala yanayi biyu tare da USNDPT. Yayin da yake wasa da kungiyar Boston Terriers ta jami'ar, ya zira kwallaye hudu da maki 14 a wasanni 19 a matsayin dan wasa na farko kafin ya shiga kungiyar 'yan kasa da shekaru 20 ta Amurka.
Gasar Zakarun Duniya ta 2018. Kusa da ƙarshen kakar wasa, an zaɓi Tkachuk don Hockey East Rookie Team bayan ya kasance na biyar a cikin ƙungiyar a maki.