Career
He previously played for the Union Dutchmen in the National Collegiate Athletic Association Men"s Division I ECAC Hockey conference in the American Hockey League for the Albany Devils and Manitoba Moose. After finishing his collegiate hockey career with Union College, Zajac signed as a free agent with the AHL"s Albany Devils in 2011. In August 2015, Zajac left the Devils organization and signed a one-year contract with Finnish Liiga club, Lukko, which included an initial two month try-out.
Three months later, Zajac returned to the AHL after signing with the Manitoba Moose.
The Moose released Zajac on February 12, 2016 after which Zajac signed with the Stingrays.