McIntosh switched from wheelchair rugby to athletics following a meeting with Kaye Colman, the mother of Richard Colman. He started competing in 2009. In 2010, he was coached by Mandi Cole. That year, he was able to purchase a racing wheelchair that fit him better. At the 2011 Australian National Titles, he earned a gold medal in the 100 metre event, and a silver medal in the 200 metre event.
