<prompt> Pedzisa mutsara unotevera: Mushure mekutamba kuSt. Louis AAA Blues U16 uye kuzvipira kuUSA Hockey National Team Development Program USNDPT, Tkachuk akabvuma kutamba kuBoston University mushure mekupedza mwaka miviri neUSNDPT. Paaive achitambira timu yeBoston Terriers yeyunivhesiti, aive nezvibodzwa zvina uye mapoinzi gumi nemana mumitambo 19 semunhu wekutanga asati aita timu yenyika yeU.S. yepasi pemakore makumi maviri yeBoston Terriers.  <response>: 2018 World Junior Championships. Pedyo nekupera kwemwaka, Tkachuk akasarudzwa kuHockey East Rookie Team mushure mekunge ave pachinzvimbo chechishanu pachikwata muzvibodzwa. 