Gary Bowyer felt that the effort that the players put in went unrewarded as they lost 2-1 at home to Norwich City.
Rovers took the lead through Alex Baptiste's 22nd minute header, but second half strikes from Cameron Jerome and Bradley Johnson saw the visitors leave Ewood with all three points.
"It is one of huge disappointment tonight for all their efforts," Bowyer told Radio Rovers.
"We got our noses in front but we needed to get a second one.
"Their first goal is scrappy, Baps has mis-judged it at the back post and then the shot goes through Steele's legs.
"We knew we would always be tested, we stuck at it, we kept going but we were done by a wonder strike from him - again. The lad did it to us down there.
"Even at the death at 2-1 we kept going, we won repeated corners, but it just wouldn't quite drop for us."
An injury to Josh King moments after his introduction played a huge part in Rovers' defeat. The Norwegian international looked to have the beating of the Norwich defence but picked up a hamstring injury just five minutes after coming on as a second half substitute.
"We made a change and it didn't quite work for us as Kingy has had to come off," added the Rovers boss. "You saw his pace against Stoke and we felt it was something we could do with.
"So to lose him so soon into the game after one run when he gets past the defender was the big blow for us. It just adds to the disappointment of conceding so late.
"We'll keep going, there is football left to be played, we'll regroup and go again."