Goals from Stephen O'Flynn and John Russell secured all three points for the Saints in Oriel Park.
It was a comfortable win for Liam Buckley's side who dominated the proceedings and got off to the perfect start with Stephen O'Flynn scoring after nine minutes.
The Saints had to wait until just before the hour mark for the second goal.
John Russell's solo effort capped off a good night for the former Sligo player and helped make it two wins from two.
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