The Black Cats were 2-1 winners at the Stadium of Light on Saturday.
The Black Cats beat Louis Van Gaal’s side 2-1 on Saturday afternoon, with a late goal from defender Lamine Kone sealing a crucial three points for his team.
It was arguably a deserved victory for Sam Allardyce’s team, as they put in a top performance throughout the game, with David de Gea making several big saves to keep his side in it.
One of those who was impressed by Sunderland's performance was Micky Gray, saying they fully deserved all three points from the game.
“It was absolutely crucial. You have to give a lot of credit to Sam Allardyce,” he told BT Sport.
“I think Sunderland absolutely deserved to win that football match.
“It was epitomised in that second goal, the way he came and put the ball in the back of the net. It was a brilliant, outstanding performance.”
Sunderland will now be hoping they can replicate this performance in their remaining home games this season, with home form likely to play a big part in their fight against relegation.
Several big sides are still to visit the Stadium of Light as well. With the likes of Leicester City, Arsenal, Everton, West Ham and Chelsea are all heading to the North East in the remaining 12 games.
If the Black Cats could replicate their performance against United in those games and pick up points, there’s no denying they would give themselves a strong chance of avoiding the drop.