Blackburn Rovers went top of the Championship as they beat former manager Tony Mowbray's Sunderland on his first return to Ewood Park.
Ben Brereton Diaz put Rovers ahead when he superbly curled a left-footed effort into the top corner from the edge of the box, seconds after Sunderland had seen a penalty appeal turned down.
Scott Wharton's close-range header soon after half-time put Rovers in control despite a hint of offside.
Sunderland pushed to try and get back into the game but they could not find a way past a resolute home defence as Ryan Hedges' effort from almost halfway with the final kick of the game glanced the Sunderland post.