Mezue ahịrịokwu na-esonụ: Yawney gbara bọọlụ maka Saskatoon J's nke Saskatchewan Junior Hockey League (SJHL), na mgbe ahụ Saskatoon Blades nke Western Hockey League (WHL). Ndị Chicago Blackhawks họpụtara Yawney n'asọmpị
1984 NHL Entry Draft, agba nke atọ, nke 45 n'ozuzu. Mgbe ọ na-egwuri egwu na ndị otu egwuregwu hockey ndị nwoke nke Canada, Yawney na-egwuri egwu na NHL maka Blackhawks, Calgary Flames, na St. Louis Blues.