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.
MGP newcomer reflects on preparing for event
Ste Sewell started racing in 2018
Cycling: Minisculo Fondo event in Ramsey today
Family friendly stage to be held around the Mooragh Park
Isle of Man wraps up Island Games with 80 medals
Golds galore and records broken in Orkney
LIVE: 2025 Island Games - DAY SEVEN
All the latest updates from Team Isle of Man in Orkney
Island Games: Eight more medals for gymnasts
22 medals in total for the Manx team