Cika wannan jumla: An zaɓa a zagaye na 7 na
2008 Entry Draft (188th overall) na Toronto Maple Leafs, zai yi NHL na farko a ranar 11 ga Maris, 2015, yana yin rikodin maki 1 a cikin nasarar 4<unk>3 Toronto a kan Buffalo Sabres. An kuma sanya shi tauraruwa ta 3 na wasan kuma ya ci gaba da kammala kakar wasa tare da Toronto Maple Leafs, yana buga wasanni 12. MacWilliam ya sa lambar 57 a lokacin da yake tare da Maple Leafs, ya zama dan wasa na farko a tarihin kungiyar da ya sa lambar.