After 16 League One games without a goal Szmodics scored twice after top scorer Jonson Clarke-Harris had opened the scoring in the early stages.
But there were several other very impressive displays as Posh maintained their bid for promotion.
Ratings key: 10-Perfect, 9-Outstanding, 8-Very Good, 7-Good, 6-Okay, 5-Poor, 4 Very poor
Ratings key: 10-Perfect, 9-Outstanding, 8-Very Good, 7-Good, 6-Okay, 5-Poor, 4 Very poor