Cobblers boss Justin Edinburgh was critical of his team's defending as he reflected on Saturday’s 4-1 home defeat to Peterborough.
“It’s hugely disappointing,” he said.
“Our defending was poor for the goals and we have to get the basics right. We’ve got to defend better and we’ve let ourselves, the fans and the football club down today.
“It was a competitive game up until they scored but from 2-0 down it was always going to be an uphill struggle. We felt we should have had a penalty at 0-0 but I’m not going to make any excuses.
“We’ve got a very good squad here on paper but that hasn’t materialised out on the pitch yet.
“We have to keep working hard, show belief and we are the only ones who can get ourselves out of the situation we are in.
“I’ve had to work extremely hard to get where I am in my career and I’m not going to give up lightly.
“There is no place to hide and we have to take responsibility and take the challenge ahead full on.”