Aidy Boothroyd was delighted to see his Northampton side produce a strong second-half performance to claim another npower League One scalp in the Johnstone's Paint Trophy.
Having seen off Milton Keynes Dons in the previous round, the Cobblers came from behind to beat Colchester 2-1, with the U's having Clinton Morrison sent-off in stoppage-time. Freddy Sears gave Colchester a first-half lead but Adebayo Akinfenwa equalised shortly after the the restart before Henoc Mukendi grabbed the winner.
"Once the players realised they weren't playing Brazil in their gold shirts they began to believe in themselves," said Boothroyd.
He added: "The team was thrown together a bit because of injuries and maybe we showed Colchester a bit too much respect in the first half. But we played for each other in the second half and got the result we thoroughly deserved.
"It's a cup competition with a trophy at he end of it and we want to do well in it, so I'm very pleased with the result and it sets up nicely for the league game with Exeter on Saturday."