Steven Pressley was full of praise for Coventry despite slipping to a 3-2 defeat in the Capital One Cup at Leyton Orient.
Carl Baker opened the scoring for the Sky Blues before Kevin Lisbie and Dean Cox gave the O's a 2-1 half-time advantage.
But although Baker was sent off for a dangerous challenge on Romain Vincelot in the 55th minute, Franck Moussa equalised four minutes later for the visitors.
Leon Clarke then squandered the chance to restore City's lead when he had a penalty saved before Lisbie's last-gasp header from Moses Odubajo's cross settled the tie.
"It was a superb performance from us," Pressley said. "We played exciting and high intensity and high energy football and how we didn't win the game in the end is a bitter blow.
"The players were magnificent and if I was a fan, I'd be exceptionally proud of the team's performance.
"I didn't think Carl Baker should have been sent-off because I don't think his foot came off the ground.
"But that shouldn't overshadow the performance of the players. I don't think the players can give any more than they have done so far and I'm extremely proud of them.
"The reception that the players got from our fans at the end of the game very much summed up what they thought of the performance and we are all very disappointed with the result of the game and we wanted to progress to the next round of the cup."