 Ellerby proved to be a solid addition to Lukko's blueline, contributing steady defensive play to go along with 3 goals and 12 points in 43 games.On July 10, 2017, Ellerby agreed to a one-year deal with top tier Swedish club, Mora IK of the Swedish Hockey League (SHL).He contributed with a heavily defensive role, logging the most blocked shots in the SHL and playing big minutes.