Donaldson did not participate in the 2012 Wuxi Classic or the 2012 Australian Goldfields Open which both were held before the EBSA European Snooker Championships. His first match as a professional was a 4–2 win over Liam Highfield in the minor-ranking PTC Event 1.&lt;ref name="SD 2012/13"&gt;&lt;/ref&gt; The tournament formed part of the Players Tour Championship events, of which Donaldson played all ten tournaments. His best result came in European Tour Event 1, where he beat Ricky Norris and Chris Norbury, before losing 3–4 to Michael Wild in the last 32. He was placed 70th on the Order of Merit.