Posh were dealt a blow as they fell behind after just 13 seconds, Malik Mothersille responded before the break with his first league goal.
Archie Collins restored the lead with ten to play and an injury-time double from Jonson Clarke-Harris sealed the three points.
RATINGS KEY: 10-Out of this world, 9-Brilliant, 8-Excellent, 7-Very Good, 6-Okay, 5-Poor, 4-Stinker
RATINGS KEY: 10-Out of this world, 9-Brilliant, 8-Excellent, 7-Very Good, 6-Okay, 5-Poor, 4-Stinker
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