Sam Hoskins scored twice in the second-half to add to Jon Guthrie’s long-range strike just before half-time, as Town made it three wins on the spin.
It was far from a vintage performance from Jon Brady’s men, but they did enough to emerge as deserved winners.
Here are Jeremy Casey’s player ratings from Sixfields….
13. Ben Fox
It was feared that Fox was out of action for most of the season, but he is fit and well, and that can only be good news for the Cobblers on this 30-minute showing. Fox was sharp and lively, won the penalty to make it 2-0 and then set Hoskins up for the third ... 7.5 Photo: Pete Norton
14. Josh Eppiah
It was great to see the Leicester City loan man finally get out on the pitch in a Cobblers shirt again. Didn't have time to make too much of an impact n/a Photo: Pete Norton