The Mariners Youth side has recovered from its loss to Adelaide last week to smash Perth 4-nil.
Mitchell Duke and Sam Munro sharing in the goal-scoring frenzy, which sees the side move to fourth place on the ladder.
The side will face Brisbane Roar on Tuesday.
Meanwhile the A League side faces Adelaide United tonight.
A win will secure the Mariners second position and a double chance in the A-League finals.
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