Douglas beat Oldershaw 57-0 at Port-e-Chee to give them a much needed boost before the Christmas lay-off.
Andrew Evans bagged five tries as Douglas went on the rampage against struggling opponents.
There were also tries from Simon Heggs, Will Latta, Callum Carine and Bryn Snellgrove who also added six conversions.
FC Isle of Man prepare for pre-season double-header
Ravens in action tonight and tomorrow (11-12 July)
Double-header race weekend beckons at Jurby
Good turnout expected for rounds five and six of ARA season
Badminton braced for busy Island Games journey
Manx side secured three medals in Guernsey two years ago
Southern 100: Todd retains solo championship title and Crowe Brothers set sidecar lap record
Action on the Billown Course comes to an end for 2025