Kammala jumla mai zuwa: An haife shi a Fort William (yanzu Thunder Bay), Ontario, Chorney ya buga wasanni huɗu masu nasara na kwalejin hockey a Jami'ar North Dakota. An kira shi zuwa ga NCAA All-Tournament tawagar a 1980, da kuma biyu na farko All Star teams a 1981. Ya fara aikinsa tare da Pittsburgh Penguins wanda ya zana shi a zagaye na shida na 1979 NHL Entry Draft. An yi musayar Chorney zuwa Los Angeles Kings don zaɓin zagaye na shida (Stuart Marston) a cikin
Zaben shiga gasar NHL na shekarar 1985. Bayan ya shafe kakar wasa tare da Sarakuna, Washington Capitals ya sanya hannu amma ya kasa samun matsayi a cikin jerin.