Born in Cushendall, County, Graffin first excelled at hurling in his youth. He arrived on the inter-county scene at the age of sixteen when he first linked up with the minor team, before later lining out with the under-21 side. He made his senior debut during the 2007 championship.
At club level he is a two-time Ulster medallist with Ruairí Óg.
Team Senior Club Hurling Championship (4): 2006, 2008, 2014 (c), 2015.
Antrim Ulster Senior Club Hurling Championship (3): 2006, 2008, 2015 Antrim Senior Club Hurling Championship (4): 2006, 2008, 2014 (c), 2015 Antrim Ulster Senior Hurling Championship (4): 2008, 2009, 2012, 2014 Walsh Cup (1): 2008 Ulster Under-21 Hurling Championship (2): 2009 (c), 2010 Ulster Minor Hurling Championship (2): 2006, 2007.
As a member of the Ulster team, Graffin has lined out in the inter-provincial championship on a number of occasions.
