At the moment when Ruben Amorim likely believed the team's momentum wasn't changing, the Red Devils secured Oliver Glasner's team's first home defeat in the Premier League from February onward.
The Palace manager's team dominated early justifiably opened the scoring by way of the French striker's retaken penalty. However they failed to make their dominance count and having failed to find the net at Selhurst, Amorim's team countered with a rapid double via their summer signing and the English midfielder.
The match proved disappointing encounter finishing of a long week for the home manager, who witnessed the Senegalese international depart hurt with a serious problem in the first period.
His Portuguese counterpart may have kept his feelings controlled as he headed off the pitch right after the final whistle.
Amorim had played down comparisons between his and Glasner's strategic methods ahead of the match, though recognizing that Glasner's team "are just doing things better than us|aspects superior to ours|elements more effectively".
The reaction following the lacklustre defeat against 10-man Everton involved altering the flank players, including the young winger shifting to the right side with the full-back assumed Dorgu's position.
The visitors likely felt a opening to capitalize since they possessed three more days to prepare and came close to leading inside the opening minute.
An extended delivery created confusion inside Palace's defense however incredibly the former United goalkeeper executed a reflex block at his goal line to prevent the midfielder.
The narrow escape served as a wake-up call for the home team after the early kick-off that was scheduled for broadcast purposes.
Quickly opportunities began to come in quick succession. Subsequent to squandered multiple opportunities during European action, it appeared it might not be the striker's opportunity when he twice dragged shots wide of the target inside the opening 15 minutes.
Yet amid days when talks over the forward's renewal have stalled, Mateta stepped up who found the breakthrough.
A further accurate delivery by the midfielder lured Leny Yoro into making contact and, having just made excellent defensive stop to prevent the Spaniard, Yoro had to trip his compatriot in the penalty box.
Palace's shot-stopper came out in a baseball cap to shield his eyes from the glare but he will be disappointed to have allowed United to draw equal after the restart.
Palace were caught napping via a fast United dead ball enabling the Dutchman to control with his chest while turning simultaneously to unleash an attempt that found the top corner.
Following weathering a chaotic situation where Zirkzee almost scored another time defensively, their day improved further moments after while Zirkzee was brought down near the 18-yard line by Marc Guéhi.
There was a moment's hesitation in the defensive wall during Fernandes' delivery the free-kick to Mount enabling the Englishman to score past the keeper with a powerful drive.
Lacking the winger's speed to depend on, Palace could barely muster additional opportunities as United were able to see out an important win that means Manchester United leapfrog the Eagles into sixth place.
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