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.
Commonwealth Games athletics squad in positive mood ahead of Glasgow
Five competitors - including three debutants - set to be involved
FC Isle of Man get pre-season underway with summer festival
Ravens get first runout ahead of new season
Swimming: Oscar Maddrell becomes triple British champion
Manx swimmer also breaks Island records during successful trip
Football: Mixed results for IoM Women in summer series
They welcomed Ynys Mon to The Bowl last weekend