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Brisbane continued to control the first half but they could not add to their advantage as John Hall made an intervention to deny Maclaren.
Shortly before the hour mark, Young was in the thick of the action again, keeping out a close-range effort from Sergio Cirio, but 11 minutes from time, Brisbane put the game out of the reach of their opponents.
Maclaren, who had provided a constant threat all evening, fired an effort past Hall after managing to see off pressure from the opposition's defence.
Deep into added-on time, Borrello provided a smart finish for his second of the night to cap off a fine performance that has helped Brisbane move into second place in the A-League standings.