Sunderland pounce on loose possession in midfield and romp forward through Ross Stewart, who takes the ball into the box, and slashes wide.
Had support there. But it's all the Black Cats right now.
Flurry of changes from both sides.
Jewison Bennette and Abdoullah Ba are on for Sunderland with Jack Clarke and Patrick Roberts departing.
Duncan Watmore is on for Boro with Riley McGree making way.
That second goal goes in and it is game over.
Since they've been down to 10 men they've played decent football and created chances here and there but that seals the three points for Sunderland.