A live wire forward line carved out several early chances for the Dragons who saw chances saved from Brill, Matthews and Brittain in just the first few minutes.
Yet for all their ambition upfront, it was Portlock who was soon the busier of the goalkeepers, and they fell behind in the first quarter to a well executed penalty corner.
Cambridge doubled their lead with a smartly taken mid air deflection and a 3rd before halftime seemed harsh after such a promising start undermined by defensive errors and not helped by sin bins for Brewer and Baldwin with green and yellow cards respectively though thankfully not simultaneously.
The returning Bob Slack added some much needed defensive midfield cover and Hutton in the back line added a physical presence to the pace of Garner and resoluteness of Briault as they began to get a foothold back in the game.
Issac Charles provided drive from centre mid while Ryan Matthews was tenacious in that link up role, scrapping like a Tasmanian devil for every ball and showing his range of passing across the width of the pitch feeding the Howitt brothers raiding either flank.
A 3-1 final score would at least have seen some reward for their positive attitude going forwards, but Cambridge scored a fourth goal of real quality, fast, precise passing dispatched with another first time deflection. The Dragons will question their marking, but a quality goal nonetheless.
At 4-0 the Dragons were despondent at the final whistle with a genuine feeling that had they been able to weather the early storm, this could have been a much closer game than the result would suggest.
A trip to Cambridge sees the Dragons face Cambs Uni next week, perhaps with a feeling that they have something to prove to themselves in the final 3 fixtures.