VIDEO: Sheff Wed 1-1 Sunderland (Agg 1-2) –Roberts Last Minute Goal Sends Sunderland to the Play-Off Finals
Sunderland will play Wycombe in the League One play-off final after Patrick Roberts' stoppage-time goal at Sheffield Wednesday.
The Black Cats had led 1-0 from the first leg but Lee Gregory wiped out their advantage in the second half. Wednesday then looked the more likely to go on and get a second but the Wearsiders caught them cold.
Jack Clarke escaped down the left and pulled the ball back for Roberts to crash a shot home.
Wednesday still had time to find a second goal that would have sent the tie to extra time because of the 10 minutes that were added on following Sam Hutchinson's head injury earlier in the second half - but they could not fashion one more big chance.
They will now spend at least another campaign in the third tier after being relegated from the Championship on the final day of last season.
Sunderland's progress means that the play-off final will be contested by the teams who finished fifth and sixth in League One after the Chairboys got past third-placed MK Dons.
Alex Neil will look to guide them to a victory at Wembley that will end a four-year spell in League One after their successive relegations from the Premier League.
Wednesday had the better of a tetchy first half but the closest they came to a goal was when Anthony Patterson easily held George Byers' well-executed bicycle kick.
Roberts sent a shot straight at home goalkeeper Bailey Peacock-Farrell after an enterprising run from Clarke, before Gregory leveled the tie with a close-range finish after Barry Bannan's incisive pass had freed Marvin Johnson down the inside left and he cut back the first time.
Thereafter it looked like the home side were the more likely to go on and find a second goal that would have taken them to Wembley.
However, Tottenham loanee Clarke got away down the left and pulled the ball back for the onrushing Roberts to convert and spark wild celebrations among the traveling fans.