Ku qor sii wadida cutubkan - Ka dib markii uu u ciyaaray St. Louis AAA Blues U16 oo uu ku biiray Barnaamijka Horumarinta Xulka Qaranka ee USA Hockey (USNDPT), Tkachuk wuxuu ogolaaday inuu u ciyaaro Jaamacadda Boston ka dib markii uu dhammaystiray laba xilli ciyaareed oo uu la qaatay USNDPT. Intii uu u ciyaarayay kooxda Boston Terriers ee jaamacadda, wuxuu dhaliyay afar gool iyo 14 dhibcood 19 kulan oo uu ahaa arday cusub ka hor inta uusan ka mid noqon kooxda qaranka Mareykanka ee ka hooseysa 20 jirka ee tartanka adduunka ee 2018
Waxaad Dhamaadkii xilli ciyaareedkii, Tkachuk waxaa loo xushay Kooxda Hockey East Rookie ka dib markii uu kaalinta shanaad ka galay kooxda dhibcaha.