Onchan surprised Ayre United in the GH Corlett Woods Cup preliminary round.
Craig Marsh, Mark Burman, Gerard Colligon and Mark Rees were on target in a 4-2 home win.
Phil Quayle and Elliot Cureton replied for the Tangerines.
Douglas Athletic are up to fifth in JCK Division Two after an 8-1 thrashing of Braddan.
A Josh Green treble, a Liam Dawson double and further goals from Darren Shields, Andy Newton and Stuart Monks (penalty) secured the three points to lift them above Colby in the table.
Football: Semi-finals of 2026 Paul Henry Gold Cup await
Four Division 2 sides begin battle for honours tonight (9 June)
Rhys Stephenson wins TT 'Star of Tomorrow' award
Twenty-year-old was youngest rider at 2026 event
Athletics: GB call-up for Webster for 100km world championships
Former Island athlete a British and European record holder over distance
Football: IoM men's team named for TNS friendly
Manx side to take on Cymru Premier champions this weekend
Shaun Parker fundraiser surpasses £12k
Sidecar passenger