Cobblers made it three wins and three clean sheets in four games by beating relegated Carlisle United 2-0 at Sixfields on Saturday.
Cobblers boss Jon Brady cut a disconsolate figure after his side were beaten by a last-gasp winner at Leyton Orient on Tuesday.
Did you know with an ad-lite subscription to Northampton Chronicle and Echo, you get 70% fewer ads while viewing the news that matters to you.