At the moment when Ruben Amorim likely believed his fortune remained negative, his side secured Oliver Glasner's team's first home defeat in domestic football since February.
The Palace manager's team dominated early and deservedly took the lead through Jean-Philippe Mateta's second penalty attempt. Yet they were unable to capitalize on their control and having failed to find the net at Selhurst, United struck back with a rapid double via their summer signing plus the former Chelsea player.
This represented a difficult day concluding following a busy period for the home manager, who saw the Senegalese international depart hurt with a serious problem in the first period.
Ruben Amorim may have kept his reactions subdued as he headed down the tunnel directly following the final whistle.
Amorim had played down parallels involving his and Glasner's tactical approach in the buildup, although he acknowledged that the opposition "currently execute things better than us|aspects superior to ours|elements more effectively".
His response to the disappointing loss facing ten Toffees was to change the wide defenders, with Amad Diallo shifting to the right side as Diogo Dalot assumed Dorgu's position.
Amorim's team probably recognized a opening to capitalize given that they had three more days to prepare and nearly scored first within the first minute.
An extended delivery caused chaos in the home penalty box but somehow Dean Henderson produced a point-blank save at his goal line to stop the Brazilian.
The near miss served as a wake-up call for Palace following the midday start that was scheduled by TV requirements.
Quickly opportunities commenced appearing in quick succession. Subsequent to squandered a hatful of chances during European action, it appeared perhaps it wouldn't be the Frenchman's match when he twice dragged shots wide of the target during the first quarter.
Yet amid days when talks over Mateta's contract extension faced delays, the French striker emerged who found the breakthrough.
A further accurate delivery from the England international lured Leny Yoro into the challenge after recently producing a brilliant block to stop the winger, Yoro had to trip his fellow Frenchman inside the area.
Henderson re-emerged with head protection to protect his vision from the glare but he will be disappointed to have allowed United to level the score after the restart.
Palace were caught napping via a fast United dead ball and Zirkzee was able to bring under control and swivel in the same movement to unleash an attempt that found the top corner.
Having survived a goalmouth scramble as the forward came close again at the wrong end, their afternoon got even better moments after when the Netherlands forward was brought down outside the penalty area by Marc Guéhi.
There was a moment's hesitation among the defenders as the captain passed the free-kick to Mount and that allowed him to defeat the goalkeeper using a fierce strike.
Lacking the winger's speed to utilize, Palace could barely muster additional opportunities while the visitors managed to complete vital three points that means the Red Devils climb above Palace into sixth place.
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