In EuroManx South Lancashire/Cheshire Division Three, Douglas stayed top of the table with a scrappy 14-3 win over bottom side Prenton.
In a game dominated by the heavy conditions, Douglas started sharper and following a try by Andy Hollis and a Bryn Snellgrove penalty, they were 8-3 up at the break.
The expected Prenton second half cave-in never happened and Douglas had to be content with two more Snellgrove penalties in the second half to see them safely home.
TT 2026: Michael Evans stays with Dafabet for second year
Manxman enters 10th year on the Mountain Course
TT 2026: Paul Jordan extends with Jackson Racing for third year
Northern Irishman wants to build on 'strong' 2025 season
Hockey: Ladies Masters reach England Hockey Semi-Finals
Over 45s side progress past Sheffield
Commonwealth Games 2026: Design chosen for Isle of Man baton
Lesley Sleight's artwork will represent the Island in Glasgow
Rugby: Bevan Rodd included in England's final 2026 Six Nations squad
Island star could make fifth consecutive appearance