MacLellan earned selection to the USA Rugby Selects for World Rugby's developmental Americas Rugby Championship tournament in 2014.
He has since made his full international debut for the Eagles in the summer of 2016 against Italy - and signed a professional contract with PRO Rugby's inaugural Ohio Aviators franchise.
2017 saw him sign a deal with Major League Rugby side Utah Warriors.
|2018 - present
|2016 - 2017
|2014 - 2023