Emerging Nomads beat Castletown 31-24 in the Shimmin Wilson Manx Bowl at Poulsom Park.
It was a disappointing finale to the season for Castletown, who picked up tries from Mark Venables, Barry Irvine and a penalty try.
Sam Peel kicked three conversions and a penalty for Town.
Athletics: Milestone entries for End To End Walk
It's believed to be highest demand in at least a decade
Hockey: Four clubs play out close-fought pre-season tournament
Mixed sides prepare for new season starting this weekend
Cricket: Hopes to open new national cricket centre soon
Plans for state-of-the-art facility were announced earlier this year
Football: Sean Jackson heading to Nations League with England
Manx amputee player in squad heading to Turkey this week