A result that underlines how difficult the Bluefin Sport Championship is, with our Tyrone neighbours running out comfortable victors.
Paul Smith put the away side ahead on 14 minutes when he rounded goalkeeper John Connolly, but Aaron Arkinson's impressive lobbed finish against his former team levels matters before half time.
Gareth Falconer was next to score against his old club, heading in to put Dergview ahead before Philip Wallace added a third.
The woe continued with Sean McEvoy inadvertantly netting an own goal after Andy Sproule's mazy run.
Next up is the Bet McLean League Cup on Tuesday evening at home to Lurgan Celtic.
Earlier in the day the Reserves drew 2-2 with Portadown in a friendly match.