Douglas B set the cat amongst the pigeons when they beat Shimmin Wilson Manx Shield leaders Southern Nomads 20-7 at Port-e-Chee.
New dad Niall Killey picked up two tries for Douglas and there were also tries from Mike Hebden and Liam Murphy.
All Nomads’ points came from Dave Caldwell, courtesy of a try and conversion.
Douglas now move into second place with a game in hand.
Ramsey B’s hopes of capitalising on a Nomads mistake were dashed when they crashed to a 58-3 defeat away at Vagabonds B.
Sam Liver was the star for Vagas with a hat-trick and there were also tries from Pete Faragher, Rob Martin, Ryan Pope, Joe Louw, Floris Venter, Ben Sharples and Jack Lemon.
Jonny Beckley added four conversions.
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