Mezue ahịrịokwu na-esonụ: Wisniewski malitere ọrụ hockey ice junior ya na Plymouth Whalers nke Ontario Hockey League (OHL) na 2000. Ọ na-akawanye mma kwa afọ nke ọma, ma bụrụ onye a họpụtara na agba nke ise, nke 156 n'ozuzu, site na Chicago Blackhawks na
N'afọ 2002. Na mbido oge 2003/04, akpọrọ ya onye isi ndị Whalers. N'afọ ahụ, o nyere goolu iri na asaa, 11 n'ime ha bụ n'ike. O mechiri nke iri abụọ na anọ na ngụkọta akara na ihe 70, nke atọ n'etiti ndị na-agbachitere na naanị isi isii na-eduga OHL, nke onye na-agbachitere Kingston Frontenacs Bryan Rodney setịpụrụ. Maka mbọ ya, e nyere Wisniewski OHL's 2004 Max Kaminsky Trophy dị ka onye na-agbachitere kachasị. Ọ kpọkwaara ụlọ nne na nna OHL, Canadian Hockey League (CHL), Defenseman of the Year award. Nkwupụta a nwetara Wisniewski nkwekọrịta na Chicago, na nrịgo na American Hockey League (AHL) Norfolk Admirals, Blackhawks 'elu obere njikọ njikọ.