Striker Alex Revell said Northampton "did not disgrace themselves" in their EFL Cup loss to Manchester United.
The 30-year-old equalised with a penalty before half-time, but Ander Herrera and Marcus Rashford made it 3-1 to the Premier League side.
The two goals followed United boss Jose Mourinho bringing on forwards Zlatan Ibrahimovic and Rashford.
"They had to bring on their biggest players to make it comfortable," Revell told BBC Radio Northampton.
"United keep the ball so well and always have options, when you look at the players they've had out, they've taken it seriously and were respectful towards us. They knew they had to put a strong team out.
"We've done ourselves proud with the effort and commitment, and it's time to look to see what we did well.
"I was really confident on scoring the penalty, it meant a great deal as all my family were here, and these are the moments you have to remember in football."
The League One side face Southend, who are in the relegation zone, at Sixfields on Saturday.
"The game was brilliant for everyone for the club but now we're back to our bread and butter for what probably is a tougher game," added Revell.