Pedzisa mutsara unotevera: Theodore akatanga basa rake rehoki duku neAldergrove Minor Hockey Association, panguva iyo akazvisimbisa somutambi akatanhamara munhau yechikwata. Basa rake rakabudirira rakamuita kuti asarudzwe mu2010 WHL Bantam Draft, neSeattle Thunderbirds. Munguva yake neboka, Theodore akashanda semutungamiriri uye akakwikwidza kuTeam Canada mumakwikwi akasiyana siyana epasi rose. Akakunda menduru yegoridhe pa2013 IIHF World U18 Championships uye
2015 World Junior Ice Hockey Championships uye menduru yesirivheri pa2019 IIHF World Championship.