Cika wannan jumla: MacKenzie ya cancanci zuwa gasar cin kofin duniya ta biyu a jere a PDC a
2012 bayan ya ci Royden Lam a wasan karshe na PDC Greater China. Ya doke Paul Barham 4-2 a cikin mafi kyawun wasanni bakwai na zagaye na farko don shiga cikin 64 na karshe a karon farko. Ya buga tsohon wasan kusa da na karshe na Duniya, Wayne Jones, kuma an doke shi 1-3. A cikin sauran 2012 ya rasa a wasan kusa da na karshe na Pacific Masters zuwa Tony Carmichael kuma an kuma doke shi a wasan kusa da na karshe na WDF Asia-Pacific Cup da Hong Kong Open. Ya shiga Makarantar cancantar PDC a yunƙurin lashe katin yawon shakatawa na shekaru 2 amma bai iya gamawa a cikin manyan 4 a kowane ɗayan kwanaki huɗu ba, amma ya gama da kyau a cikin martaba don a ƙarshe ya buga wasannin yawon shakatawa a wannan shekarar.