North Melbourne selected Mahony with pick 34 at the 2019 NAB AFL Draft. AFL.com.au: Small forward/midfielder who uses his decision making and footy smarts to set up opportunities for his team around the goals. Excels at stoppages and provides strong on-field leadership. A very consistent performer for Vic Metro, he averaged 18 disposals at 72 per cent efficiency, 2.8 clearances and 3.5 tackles across the 2019 NAB AFL Under-18 Championships.