Gary Bowyer felt Rovers should have left the DW Stadium with all three points after a 1-1 draw with Wigan Athletic.
Corry Evans put the visitors in front, but James McClean, fortunate to be on the pitch after a rash first half challenge on Markus Olsson, levelled just past the hour mark.
Despite being pegged back Rovers had the chances to claim the win as both Jordan Rhodes and Jason Lowe saw late efforts at goal cleared off the line to leave the manager disappointed to leave with just a point.
Speaking to Rovers Player after the match, Bowyer said: "We score an outstanding goal and then we've had two cleared off the line - one unbelievably so.
"Their goalscorer shouldn't have been on the pitch, it is as simple as that for the challenge Markus Olsson. So we are disappointed with that.
"I think it was a typical local derby, the game was scrappy, the pitch wasn't great and both sides went hell for leather for it.
"On reflection we should have won the game with our chances. We are disappointed that we didn't take all three."
Rovers welcome Swansea City to Ewood Park to next Saturday for the FA Cup fourth round clash - kick-off 12.45pm.
Tickets are on open sale with prices in all areas of the ground at £20 Adults, £15 Seniors 65 and over, £15 18-20yrs, £10 Juniors aged 5-17s and £5 for Under 5s.
Book online today at www.onerovers.co.uk