Tony Mowbray bemoaned his side's lack of guile as their four-match unbeaten run came to an end at the hands of AFC Wimbledon.
Kwesi Appiah's goal just past the quarter-hour at Ewood Park would prove to be enough for the Dons to claim all three points, and to inflict a second home league defeat on Rovers.
The manager felt the team worked hard to try and get something out of the match, but lacked that quality when it mattered.
"We are left frustrated today," the manager told iFollow Rovers.
"We put a lot of effort into today's game, we banged on their door but couldn't get in. It was just a frustrating day for us.
"I said to the players in there that we didn't have the guile to break them down and to score a goal. I think if we'd have got one, we might have got a few. So we are left disappointed.
"Credit to them, they dug in, they made life difficult and they scored a goal and held onto it.
"It is frustrating for us that we didn't have the necessary tools to get something out of the day."
Rovers are back in action next Saturday when they take on Shrewsbury Town.
Tickets for the match against the league leaders have all sold out.