Buuxi weedha soo socota: Wisniewski wuxuu bilaabay xirfadiisa hockey-ga barafka ee da'yarta ee Plymouth Whalers ee Ontario Hockey League (OHL) sanadkii 2000. sanad walbo wuu soo fiicnaadaa, waxaana loo xushay wareega shanaad, kaalinta 156aad, waxaa doortay Chicago Blackhawks sanadkii
Sanadkii 2002. Bilowgii xilli ciyaareedkii 2003-04, waxaa loo magacaabay kabtanka Whalers. Sanadkaas, wuxuu dhaliyay 17 gool, 11 gool ayaana ka dhalisay ciyaar xoog leh. Waxa uu ku dhameystay kaalinta 24-aad ee guud ahaan gool dhalinta isagoo leh 70 dhibcood, oo ah kii saddexaad ee difaaca iyo lix dhibcood oo ka yar hogaanka OHL, oo uu dhigay difaaca Kingston Frontenacs Bryan Rodney. Dadaalkiisa, Wisniewski waxaa la siiyay OHL's 2004 Max Kaminsky Trophy oo ah daafaca ugu fiican. Wuxuu sidoo kale gurigiisa ku qaatay horyaalka waalidka ee OHL, Horyaalka Hockeyga Kanada (CHL), Abaalmarinta Difaaca Sanadka. Aqoonsigan ayaa Wisniewski ku kasbaday qandaraas Chicago, iyo u boodboodka Horyaalka Hockeyga Mareykanka (AHL) ee Norfolk Admirals, oo ah kooxda ugu sareysa horyaalka hoose ee Blackhawks.