A lack of quality when it counted most left Nottingham Forest manager Mark Warburton frustrated as his side suffered defeat against Birmingham.
A Che Adams goal on five minutes was the decider at St Andrew's and the Forest boss was left rueing what might have been.
"It was disappointing," he said. "We made the mistake after five minutes and you give the team who are fighting and scrapping something to hang on to. Despite dominating for long periods in the second half, we lacked that bit of quality in the final third to get our rewards.
"We looked so strong in the second half but to give the opposition something to hang onto, you give yourself a mountain to climb.
"We knew they would dominate physically. We had 12 corners but there was no point just throwing balls into the box when they are so strong aerially. We tried to play it quickly, we dominated and we just lacked that bit of quality.
"Sometimes the ball just falls your way, it didn't today and we have been punished for that mistake after five minutes.
"There was no lack of effort, the backing from the fans was outstanding, but it is so frustrating that we have come here, dominated for long periods of the game and not got anything out of it."