Birmingham manager Alex McLeish claimed their come-from-behind 3-2 victory at Swansea was down to the attitude of the players.
Two goals by substitute Kevin Phillips inside five second-half minutes gave the Blues a victory that at one time looked unlikely.
Jordi Gomez had put the Swans in front after just 90 seconds and in the opening quarter they squandered three easy chances.
Four minutes before the interval Marcus Bent headed his first goal for the visitors but then Rahdi Jaidi deflected an Angel Rangel shot into his own net to give the Swans a deserved half-time lead.
Phillips' introduction in the 65th minute turned things around as nine minutes later he headed home James McFadden's cross and then crashed in a 20-yard shot after the Swans' defence had failed to clear.
"It was a victory for team spirit and character," said McLeish. "We were a bit ragged at the back and the early goal took the stuffing out of us but while we were only one down we were still in the game.
"There are no words to describe the contribution of Kevin Phillips. His finishes were amazing and it is not the first time he has come off the bench to win games for us."
Swansea manager Roberto Martinez could not fault his side, although he admitted had they taken their earlier chances they would have stood a better chance.
"I am very proud of my players but you get nights like this and everything seemed to go in Birmingham's favour," he said.
"We started at a very high tempo and after scoring so quickly we could have added at least two more.
"I was delighted with the start we made but then we let in two very soft goals partly because we were without Leon Britton and Ferrie Bodde. They are the heart of our midfield and could be out injured for several weeks so it is a huge price to pay."