Siddal will need to up their game at home to East Leeds on Saturday after a disappointing start to their National Conference League campaign on Saturday.
Gareth Greenwood’s side were beaten 44-20 at Hull Dockers in the Premier Division after being blown away in the early stages at The Willows.
They were out-muscled early on, Dockers racing into a 22-0 lead after 18 minutes with tries from forwards Nick Powley, John Eccles, Chris Lyth and Craig Cook. Chris Stephenson kicked three conversions.
The hosts missed further opportunities before Siddal steadied the ship with a try from centre Chester Butler, replacement Gareth Blackburn adding the goal.
Stephenson weaved his way through for a try he converted himself and Craig Todd touched down five minutes later to make it 32-6.
Siddal at last found some form and put in a 14-point burst through hooker Craig Sanderson, winger Steve Hope and Butler’s second plus one Blackburn conversions to claw it back to 32-20.
However, Dockers finished the stronger, with a long-range effort from Steve Milne and Cook’s second, Stephenson adding both goals.