Ross Stewart and Amad Diallo were on target as Sunderland overcame 10-man Middlesbrough in the Wear-Tees derby.
Stewart tapped in on the rebound after Zack Steffen had saved his penalty early in the second half.
Boro, depleted by Dael Fry’s dismissal for conceding the spot-kick, fought hard but could not find a response.
Diallo sealed the victory, exchanging passes with Patrick Roberts and thumping in the Black Cats’ second nine minutes from time.
Sunderland’s victory lifts them to ninth place in the Championship table, just a point behind Boro who drop down to sixth.
The hosts looked the more potent side in attack and should have gone ahead in the ninth minute when Steffen’s careless clearance flew straight to Diallo, but he scuffed his finish across goal with only the keeper to beat.
The on-loan Manchester United winger went close again with a deflected volley, while Stewart’s attempt was ruled out for offside, following up after Steffen fumbled a Roberts shot.
Roberts set up another opportunity that Stewart speared over the bar and Steffen atoned for his earlier error just before the half-time whistle, clawing away the Sunderland striker’s crisp half-volley after a rare slip by Fry.
Boro barely threatened at the other end, although Black Cats goalkeeper Anthony Patterson needed to be alert to get down and tip a Marcus Forss effort around the post.
Sunderland broke the deadlock, however, when Fry was caught out again just four minutes after the restart, bringing down Stewart as he chased a through ball and earning himself a straight red card from referee James Linington.
Although Steffen guessed correctly, diving to his left to turn Stewart’s spot-kick on to the post, the rebound fell perfectly for the Scotland international to tuck away his seventh goal in six games.
Middlesbrough moved to shore up their back line, sending on former Sunderland man Paddy McNair and his vital challenge prevented Edouard Michut from doubling the home side’s advantage soon afterwards.
Despite half-chances for Riley McGree and Hayden Hackney, the visitors were unable to break down a Sunderland side who utilised their advantage prudently.
Diallo wrapped up the points when he collected a return ball from Roberts and cut inside on to his left foot before firing past Steffen.
- 42AleseSubstituted forWrightat 70′minutes
- 4EvansSubstituted forMichutat 11′minutes
- 10RobertsSubstituted forBaat 82′minutes
- 20ClarkeSubstituted forBennetteat 81′minutes
- 6FryBooked at 49mins
- 16HowsonBooked at 16mins
- 21ForssBooked at 50minsSubstituted forArcherat 65′minutes
- 8McGreeSubstituted forWatmoreat 83′minutes
- 25CrooksSubstituted forMcNairat 52′minutes
- James Linington
Match ends, Sunderland 2, Middlesbrough 0.
Second Half ends, Sunderland 2, Middlesbrough 0.
Attempt missed. Chuba Akpom (Middlesbrough) right footed shot from the centre of the box is close, but misses to the left. Assisted by Cameron Archer.
Attempt saved. Cameron Archer (Middlesbrough) right footed shot from the right side of the six yard box is saved in the centre of the goal.
Attempt blocked. Tommy Smith (Middlesbrough) right footed shot from outside the box is blocked.
Corner, Middlesbrough. Conceded by Dan Ballard.
Foul by Édouard Michut (Sunderland).
Tommy Smith (Middlesbrough) wins a free kick in the defensive half.
Abdoullah Ba (Sunderland) wins a free kick on the right wing.
Foul by Jonny Howson (Middlesbrough).
Jewison Bennette (Sunderland) wins a free kick on the left wing.
Foul by Tommy Smith (Middlesbrough).
Attempt missed. Ross Stewart (Sunderland) right footed shot from the right side of the box is high and wide to the right. Assisted by Édouard Michut.
Substitution, Middlesbrough. Duncan Watmore replaces Riley McGree.
Substitution, Sunderland. Abdoullah Ba replaces Patrick Roberts.
Substitution, Sunderland. Jewison Bennette replaces Jack Clarke.
Goal! Sunderland 2, Middlesbrough 0. Amad Diallo (Sunderland) left footed shot from the right side of the box to the bottom right corner. Assisted by Patrick Roberts.
Attempt missed. Tommy Smith (Middlesbrough) left footed shot from outside the box misses to the right following a corner.
Corner, Middlesbrough. Conceded by Jack Clarke.
Attempt blocked. Tommy Smith (Middlesbrough) right footed shot from outside the box is blocked. Assisted by Riley McGree.