Dee ihe na-aga n'ihu maka paragraf a - Mgbe ọ na-egwuri egwu maka St. Louis AAA Blues U16 ma tinye aka na USA Hockey National Team Development Program (USNDPT), Tkachuk kwetara igwu egwu maka Mahadum Boston mgbe emechara oge abụọ na USNDPT. Mgbe ọ na-egwu egwuregwu maka ndị otu Boston Terriers nke mahadum, o nwere ihe mgbaru ọsọ anọ na isi iri na anọ na egwuregwu iri na itoolu dị ka nwa akwụkwọ mbụ tupu ya emee ndị otu mba US n'okpuru afọ 20 maka asọmpi World Junior Championship nke afọ 2018.
Ọ dị mma. Na nso ngwụcha oge, a họpụtara Tkachuk maka Hockey East Rookie Team mgbe ọ nọ na nke ise na otu na isi ihe.