
On Tony Mowbray's first return to Ewood Park as a manager, he saw his old team beat his new one.
After a penalty appeal was turned down by the referee, Ben Brereton Diaz put the ball into the top corner from the edge of the box.
After half-time, Scott Wharton's close-range headed put the game out of reach for the visitors.
Ryan Hedges' goal from almost halfway with the final kick of the game glanced the Sunderland post as the Black Cats tried to get back into the game.
It's two points clear at the top of the Championship thanks to the win for Rovers, but other teams could leapfrog them if they win on wednesday.
Both of the goals that Blackburn scored were hard done by. Dennis had a penalty appeal waved away by the referee after he went down under a Hedges challenge.
Twenty-two seconds later, Brereton was celebrating his 100th start with a goal after two passes and a blocked shot, and his curling effort gave the keeper no chance.
It could have been 2-0 in the space of a few minutes, with BreretonDiaz lying in wait at the back post, while at the other end JackClarke had a headed goal easily saved by the keeper.
The game was won by Wharton after Hedges' free-kick was glanced home by the defender.
Danny Batth had a goal saved by Thomas Kaminski as the visitors had their best spell of the game, but it seemed to spark the visitors into action.
A Jewison Bennette shot was saved by Kaminski in the 10th minute of the second half, and Hedges' effort in the 5th minute of the last minute was close to embarrassment.
Jon Dahl Tomasson is the head coach of the football team.
We played well during the first half.
"Second half I'm always demanding, we could always be better, of course those transition moments where we can kill the game completely."
Overall a great performance, great spirit, and a big compliment to our fans, it was a great night.
It's hard to play against us at Ewood Park, I think we are getting there.
Tony said on the radio that he was from Durham.
The referee was adamant that the penalty was not a stonewall penalty, but what do you do?
We seem to be talking about the referees even though I don't want to. I don't want to be that guy who blames the ref.
We could have been up by a goal if we had a penalty.
If you can create as many opportunities around the box with a centre forward of the movement of Ross Stewart, you will win a lot of football matches.
We have to find a way to be more ruthless and get more people in the box.