 He has previously played in the National Hockey League for the Florida Panthers, Los Angeles Kings and Winnipeg Jets.Ellerby was drafted 10th overall by the Florida Panthers in the 2007 NHL Entry Draft from the Kamloops Blazers of the Western Hockey League.During the 2008 World Junior Hockey Championship, Ellerby was invited to try out for the tournament, having played for Canada at the 2007 Superseries against the Russians.