Just when the Portuguese coach likely believed the team's momentum would never turn, the Red Devils delivered the home side's first home defeat in league competition since February.
The Palace manager's team dominated early justifiably opened the scoring by way of Jean-Philippe Mateta's second penalty attempt. Yet they were unable to make their dominance count and having failed to find the net at Selhurst, Amorim's team countered with a rapid double from the Dutch forward plus the former Chelsea player.
This represented a difficult afternoon at the end after multiple matches for the home manager, who witnessed the Senegalese international depart hurt with a concerning injury in the first period.
Ruben Amorim may have kept his reactions subdued when proceeding toward the dressing room immediately after the game's end.
The United manager minimized similarities regarding both managers' tactical approach in the buildup, although he acknowledged that Glasner's team "simply perform things better than us|aspects superior to ours|elements more effectively".
His response to the disappointing loss versus reduced Everton was to change the wide defenders, featuring the Ivorian moving to the right flank with the full-back replaced Patrick Dorgu.
The visitors likely felt a chance to benefit given that they had additional preparation time and nearly scored first after 43 seconds.
An extended delivery created confusion in the Palace area yet remarkably Dean Henderson produced a point-blank save on his goalline to prevent the midfielder.
The near miss acted as an alert for the home team after the early kick-off which was determined by TV requirements.
Quickly opportunities commenced appearing in quick succession. After missing a hatful of chances in midweek, it seemed like it might not be the Frenchman's match as he pulled shots wide of the target in the initial phase.
But in a week where negotiations regarding the forward's renewal hit obstacles, it was the France international who found the breakthrough.
A further accurate delivery from Wharton enticed the young Frenchman toward the tackle after recently producing a brilliant block to stop the winger, the 20-year-old was forced to foul his fellow Frenchman in the penalty box.
Henderson re-emerged wearing a cap to block the sun from the setting sun however he'll experience frustration to have allowed United to level the score post the break.
Palace were caught napping by a quick Bruno Fernandes free-kick and Zirkzee was able to bring under control and pivot in one motion to generate a strike that sailed into the far corner.
Following weathering a frantic moment as the forward came close again at the wrong end, their situation enhanced shortly afterward when the Netherlands forward was brought down outside the penalty area from the Palace defender.
There was a moment's hesitation within the barrier during Fernandes' delivery the free-kick to Mount permitting Mount to score past the keeper using a fierce strike.
Missing the Senegal international's acceleration to call on, Glasner's side found it difficult to generate another chance allowing Amorim's team to secure vital three points elevating the Red Devils climb above Palace up to sixth spot.
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