Kammala jumla mai zuwa: An tantance Dickinson a matsayin babban mai yiwuwa wanda ya cika tsammanin zama zaɓaɓɓen zagaye na farko a 2013 NHL Entry Draft, wanda aka zaɓa 29th gaba ɗaya ta Dallas Stars. Dickinson ya shiga Guelph Storm na Ontario Hockey League (OHL) don kakar 2011<unk>12 kuma an san shi saboda wasan da ya yi lokacin da aka sanya shi zuwa OHL Second All-Rookie Team. A kakar wasa ta gaba an gayyace shi don shiga cikin wasan CHL Top Prospects Game, sannan aka zaba shi don yin wasa tare da tawagar 'yan wasan Kanada da suka lashe lambar zinare a gasar zakarun Turai a shekara ta 2007.
2013 IIHF Gasar Kofin Duniya ta U18. A cikin kakar 2013-14, Dickinson ya taimaka wa Storm ya kama gasar zakarun OHL kafin ya yi rashin nasara ga Edmonton Oil Kings a wasan karshe na Memorial Cup.