Career
He was selected by the Pittsburgh Penguins in the 6th round (180th overall) of the 2008 National Hockey League Entry Draft. Prior to turning professional, Killeen played major junior hockey in the Ontario Hockey League with the Brampton Battalion. On April 13, 2010, the Pittsburgh Penguins signed Killeen to an entry-level contract.
He was later assigned to AHL affiliate, the Wilkes-Barre/Scranton Penguins.
On April 3, 2013, the Pittsburgh Penguins traded him to the Columbus Blue Jackets in exchange for future considerations, however following the 2012-2013 season"s end the Blue Jackets declined to extend Killeen a qualifying offer allowing him to become a free agent on July 1, 2013. On June 11, 2014, the of Carleton University announced that Killeen would be suiting up with the Carleton Ravens men’s hockey team to play 2014-2015 season within the Ontario University Athletics conference of Canadian Interuniversity Sport (Commonwealth of Independent States ).
