A Douglas side with an average age of just 20 overcame stiff resistance at Oldershaw to bag a 22-15 win.
First half tries from Niall Killey, Bryn Snellgrove and Conor McCoghan saw Douglas 15-12 in front at half-time.
Snellgrove added another after the break which was converted by Tom Chamberlain and this was enough to seal the game.
TT 2026: Nathan Harrison to race again under H&H Motorcycles banner
Manxman managed three top-ten finishes last year
Snooker: Hurricanes join PSM Legion at league summit
Mike Boyle sets new league record for Port St Mary Strollers
FC Isle of Man lose out at free-scoring Chadderton
Hosts deliver first-half blitz to hand 'The Ravens' defeat on the road
TT 2026: DAO Racing returns with Josh Brookes at the helm
It'll be the first time the team has competed here since 2023