The opening round of the Shimmin Wilson Manx Bowl finished all square at Poulsom Park as Castletown and Douglas B fought out a 19-19 draw.
Ed Alderson was on the mark for Town with a try and the remainder of their points came courtesy of the boot of Sam Peel as he kicked a conversion and four penalties.
Douglas hit back with tries from Andy Corris and Jon Hill, plus three penalties from Mark Shortland.
Football: Railway Cup hopefuls all maintain pace in premier league
Castletown stay four points clear atop Division 2
Rugby: Vagabonds Ladies stay top with another victory
Vagabonds men and Douglas also take respective wins on home soil
Hockey: Harlequins A beat rivals to close in on prem leaders
Bacchas B take important victory in battle for top-flight safety
FC Isle of Man torn apart at Barnoldswick Town
It's the Manx side's heaviest ever league defeat