Career
Duffie started his career with Falkirk, spending 10 years with the side, starting with the youth development system before playing over 160 matches for the first-team Falkirk
Duffie made his Falkirk first team debut against Aberdeen in the SPL on 2 February 2010. He quickly established himself as first choice right-back and has gone on to make over 100 league appearances for Falkirk in the SPL, SFL and in the combined SPFL. Duffie has become renowned for being an attacking full-back who likes to break forward at pace and overlap the midfield to get crosses into the box.
In season 2011-2012, he was a frequent supplier for striker Farid El Alagui and the 28 goals he scored, and it was mainly down to this that he was included in the PFA Scotland Team of the Year for Division One for that year.
After suffering a number of injuries that restricted his playing time, Duffie was released by Falkirk in January 2016. Duffie has represented Scotland at under-17, under-19 and under-21 level