Matt Ritchie scored the winner as Newcastle United condemned Manchester United to a shock 1-0 defeat in the Premier League on Sunday.
It’s United’s second defeat in their last three Premier League games following the 2-0 reverse at Tottenham Hotspurs, leaving them 16 points behind runaway leaders Manchester City.
Despite club record signing Paul Pogba returning to the starting XI, the Red Devils were hardly at their best at St James’ Park and paid the price in the 65th minute.
Jonjo Shelvey’s free-kick was collected by Dwight Gayle who picked out an unmarked Ritchie to fire low past David De Gea.
As he did in the loss at Spurs, Mou hooked Pogba after another below par performance from the France midfielder and United should have equalised soon after, but Anthony Martial saw his two shots blocked on the line by Gayle after the Magpies failed to clear a corner.
Newcastle had kicked off in the relegation zone, but a first win in five league games – their first success against United since 2013 – lifts them to 13th place.
Elsewhere at the John Smith’s Stadium, Huddersfield climbed out of the relegation zone after a 4-1 win against Bournemouth.
David Wagner’s team took the lead in the seventh-minute through Alex Pritchard, only for Junior Stanislas to level for Bournemouth with a cool finish from Ryan Fraser’s cross.
But a brace from Mounie and a stoppage-time penalty from Rajiv van La Parra gave the Terriers all three points as they climb out of the relegation zone, while Bournemouth remain in mid-table.