Tony Mowbray admitted that there wasn't enough fight from his team after witnessing a narrow defeat for his Rovers side against Birmingham City at St Andrew's.
Maxime Colin's header proved to be the difference in the Midlands, but Rovers failed to turn up in the first half and rarely tested home stopper Lee Camp.
The opportunities did arrive late for Mowbray's men to take a point, with Danny Graham, Elliott Bennett and Derrick Williams all going close to levelling the score.
But Birmingham had their chances as well, most notably through Lukas Jutkiewicz, who crashed an effort against Christian Walton's upright midway through the second half.
And Mowbray was left bewildered by what he saw from a lacklustre Rovers, particularly in the first half.
“I didn’t recognise the team in the first half and we had some harsh words at half time," he revealed to iFollow Rovers after the game.
"We were better in the second half, but it still wasn’t enough. If we have any aspirations then we have to be better than we were tonight, and we have no excuses.
“We had a good following tonight and we didn’t bring a game that warranted anything from the match.
“The players are aware of our feelings, my feelings and we need to have a reaction on Saturday.
“I didn’t see it coming. For two-and-a-half years I’ve had fight, commitment and honesty from the team, but I didn’t see any of that tonight.
“We didn’t get anything from the game and it was really, really disappointing from us tonight.
“We prepare the team throughout the week, Birmingham’s a tough place to come to and they have a decent team.
“But I’m left disappointed by our drive and our passion. Football’s an emotional sport, I’m an emotional guy and I expect an emotional performance," he added honestly.
“We lost the game in the first half and can have no complaints.
“It felt tonight that we turned up tonight as if we could just go and play against a Birmingham side who are in a similar position to us. We didn’t match them in the first half.”