Didi Hamann fears Manchester City's super season is in danger of being derailed.
City have won one of their last six games to slide out of the Champions League places and Hamann said: "In the last few weeks we have not been firing, but we've come away with a result from four or five sloppy performances.
"We got away with wins over Reading and Bolton when maybe those games could have ended in draws.
"Our defence has kept us where we are but we must improve going forward."