Cardiff manager Erol Bulut:
"The first 45 minutes I think we did quite good things. Second half we don't need to speak about. It was not what we want to be about.
"Three minutes after 45 in the first half, the referee did not whistle, he added 45 seconds. There was no reason for that and we conceded a goal. We had to continue to concentrate and not concede.
"Second half we made some changes but it was nothing like how we were planning to play. We planned but we did not do it.
"It was mostly individual actions - everyone trying alone to score - but alone we can't do anything. In the second half, there was nothing good to show the supporters."
Birmingham manager Wayne Rooney:
"We knew coming here would be a tough game. Cardiff are a team who stay in games and try to nick three points.
"In the first half we took the ball and made it difficult at times for Cardiff. They had moments, especially at set-pieces - Cardiff are the best in the league at set-pieces - so we struggled at times with that but thankfully we got the goal before half-time.
"I was more pleased with the second half. We didn't give them any chances and we didn't look like conceding a goal and had two or three really good chances.
"I'm really pleased with the performance but it's been a difficult few weeks for everyone result-wise, so tonight it was important to get the result. I'm delighted for the players."