Lee Bowyer has apologised for his side’s performance after Peterborough beat Birmingham City 3-0 at the Weston Homes Stadium.
Blues were three down by the time Gary Gardner received a red card for a foul on Posh captain Nathan Thompson in the second half.
But head coach Bowyer praised the travelling band of 4,000 supporters who followed their team away from home.
He said: “I know what they bring from start to finish, I have to thank them for non-stop singing, staying until the end.
“The referee blows his whistle and they’re still singing as the players come off, that’s some doing that.
“That’s passion for your football club and I know we have that in abundance with our fans.
“I’ll apologise to our fans for that performances but we’ve had a lot of good performances in my time, that’s just one bad one and I think they’ll let us off on that one.”
Blues fell one behind in the opening minute of the game as captain Harlee Dean turned the ball into the back of his own net, and Bowyer believes fatigue was the reason for his team’s lacklustre display.
“They’re physically tired, mentally they’re tired too,” Bowyer added.
“But second half I thought we came out and caused them problems, but all day just nothing went our way.
“We couldn’t score in the first half, they keep it out and then go down the other end and get a penalty.
“We could’ve made it one all, then seconds later they win a penalty to make It 2-0.
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“At half time we changed things around and again started better in the second half, I thought we started as the better team in the second half.
“In the second half we made chances and caused them problems, but then someone makes a pass, hits one of our players on the heel, they break and score and it’s like, wow.
“But if we score that next goal were in the game, but it just fight go our way for whatever reason, but you can’t make excuses, for me they were better than us today and they deserved to win.