Terrigal Avoca will play Newcastle City in the grand final of the Black Diamond Cup.
City beat rivals Cardiff while the Central Coast club overcame Singleton.
The minor premiers got away to a fast start at Adelaide Street Oval, taking a 19-point lead into the first break.
The Roosters started to make a comeback in the second term, but as tempers flared Singleton couldn’t quite make up the difference.
GRAND FINALISTS DECIDED IN LOCAL AFL
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