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.
Rugby: Final Manx Cup group fixture taking place this weekend
Vagabonds host Nomads amid competition uncertainty
Hockey: Cup finals weekend for 2025 season finale
Six trophies to be decided in two days at the NSC
Football: Hospital Cup & Junior Cup enter quarter-finals phase
Seven of eight ties across both tournaments scheduled this weekend
Huge Island contingent heading to 2025 London Marathon
Iconic race taking place this weekend (27 Apr)