Kammala jumla mai zuwa: Cooke ya buga wasan hockey na kankara na matasa a gasar Ontario Hockey League (OHL) na tsawon yanayi uku, galibi tare da Windsor Spitfires, kafin ya buga sana'a. Ya yi rikodin maki 95 mai ban sha'awa (na goma a gaba ɗaya a gasar), yaƙin neman zaɓe na hukuncin kisa na 146 a kakar wasa ta biyu ta OHL, Vancouver Canucks ta zana shi a matsayin na 144 a gaba ɗaya a cikin
Zaɓin shiga NHL na 1997. Komawa zuwa OHL don kakar wasa ta uku bayan an tsara shi, an yi ciniki daga Windsor zuwa Kingston Frontenacs a ranar 17 ga Disamba, 1997, a musayar Brent L'Heureux. Cooke zai gama kakar wasa da kuma aikinsa na OHL tare da Kingston.