Cuir crìoch air an abairt a leanas: Chluich Yawney airson Saskatoon J's de Saskatchewan Junior Hockey League (SJHL), agus an uairsin Saskatoon Blades den Western Hockey League (WHL). Chaidh Yawney a tharraing leis na Chicago Blackhawks ann an
Draft inntrigidh NHL 1984, treas chuairt, 45mh iomlan. Às deidh dha cluich leis an sgioba hocaidh fireann nàiseanta Chanada, chluich Yawney anns an NHL airson na Blackhawks, Calgary Flames, agus St. Louis Blues.