Sunderland have been promoted back to the Premier League after coming from behind to beat Sheffield United 2-1 in the Championship play-off final.
Brighton-bound Tom Watson capitalised on a loose ball and fired low into the bottom corner deep inside stoppage time to spark wild celebrations around Wembley.
Chris Wilder's side dominated large spells of the £200million showdown and took the lead when Tyrese Campbell clipped a delicate effort over the onrushing goalkeeper.
But the Black Cats responded in style, Eliezer Mayenda crashing into the top corner on 76 minutes to set up a grandstand finish at the pulsating national stadium.