Career
He was taken with draft pick number 37 in the 2009 National Draft, and played the following year, in the 2010 American Federation of Labor-Congress season. Macmillan attended Scotch College Melbourne where he also played First XI cricket and was a proficient batsman and keeper. Macmillan made his debut in Round 17, against Essendon.
He was born to mother Jane MacMillan.