Speaking to the media,Coleman said: "We've all got hangovers from losing to Sheffield United on Wednesday. We could have been five points off the play-offs and we missed the chance and I blame this game with Chelsea for that.
"Everyone I talked to in the days building up to Sheffield United was saying, 'Good luck for Chelsea'. I was thinking, 'We've got Sheffield United on Wednesday'.
"People were only half interested and that rubbed off on the players if you see the performance. If you had seen us last night compared to Saturday against Norwich, it was two different teams."