A late Ryan Giles own goal saw Sunderland snatch victory in an entertaining Tees-Wear derby at the Riverside.
An energetic start saw the hosts rewarded when Delano Burgzorg slotted home from Hayden Hackney's defence-splitting pass, but despite Boro's dominance, the Black Cats equalised after Dan Neil's shot took a deflection off George Edmundson and into the net.
Sunderland took the lead early in the second half through Wilson Isidor's cool finish before Hackney pulled Boro back level minutes later.
However, a late twist saw Giles' 87th-minute own goal prove to be the decisive moment as the Black Cats move level on points with third-placed Burnley in the Sky Bet Championship table, while Boro remain stuck outside the play-off positions.
Mark Travers, after his loan move from Bournemouth, started between the posts for Boro, with fellow Irish international Finn Azaz also in the hosts' line-up.
After Aidan Morris had a shot blocked, early pressure from the Teessiders saw debutant Morgan Whittaker play a neat pass through to Luke Ayling on the right flank and he chipped a cross in to Marcus Forss, but his header was pushed away by Anthony Patterson.
Boro's bright start was rewarded 11 minutes in when Hackney threaded a brilliant pass into Burgzorg, who burst through the centre of the Sunderland defence to tuck the ball into the bottom corner.
Patrick Roberts made some promising moves and had a shot from a tight angle blocked before his inswinging corner was met by Chris Mepham at the back post, but Travers made the save.
Boro remained in control, exposing the Black Cats' defence again as Hackney sprinted into plenty of space in the middle of the pitch before flicking a pass to an unmarked Forss on the left, but his shot flew over
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