At the moment when the Portuguese coach probably assumed his luck would never turn, the Red Devils delivered Oliver Glasner's team's opening Selhurst Park setback in the Premier League since February.
The Austrian coach's side had been rampant rightfully went ahead by way of their forward's repeated spot-kick. Yet they were unable to capitalize on their control after previously struggling to net versus Palace, the visitors responded twice in nine minutes via Joshua Zirkzee plus the former Chelsea player.
The match proved disappointing encounter finishing of a long week for Glasner, who saw Ismaïla Sarr depart hurt with a concerning injury in the first period.
The United manager likely maintained his emotions in check when proceeding off the pitch right after the game's end.
Amorim had played down similarities regarding the two coaches' tactical approach ahead of the match, although he acknowledged that Glasner's team "simply perform things better than us|aspects superior to ours|elements more effectively".
The reaction following the lacklustre defeat facing ten Toffees was to change the wide defenders, including the young winger shifting to the right side while the Portuguese assumed Dorgu's position.
United must have sensed a opening to capitalize since they possessed extra rest days and almost went ahead inside the opening minute.
A long throw created confusion in the Palace area yet remarkably the ex-United shot-stopper executed a reflex block on his goalline to deny Casemiro.
The near miss served as a wake-up call for the home team post the lunchtime beginning which was determined by TV requirements.
Quickly opportunities commenced appearing frequently. Subsequent to squandered numerous attempts in midweek, it looked perhaps it wouldn't be the striker's opportunity when he twice dragged shots wide of the target during the first quarter.
But in a week when talks over the striker's new deal hit obstacles, the French striker emerged who found the breakthrough.
One more perfect ball from Wharton enticed the young Frenchman toward the tackle and, having just made a brilliant block to prevent the Spaniard, the young defender could only bring down Mateta within the 18-yard area.
Henderson re-emerged wearing a cap to shield his eyes from the setting sun but he will be disappointed for permitting the visitors to equalise eight minutes after the restart.
Palace were caught napping from a rapid Fernandes set-piece allowing the forward to bring under control and pivot in one motion to generate a strike that found the top corner.
After enduring a chaotic situation as the forward came close once more in his own net, their day improved further a few minutes later when the Netherlands forward was brought down on the edge of Palace's box from the Palace defender.
A temporary uncertainty developed within the barrier when Fernandes rolled the free-kick to Mount permitting Mount to beat Henderson via a strong shot.
Without Sarr's pace to depend on, Glasner's side found it difficult to generate additional opportunities allowing Amorim's team to secure an important win which moves United move above Palace up to sixth spot.
Elara Vance is a digital strategist and tech consultant with over a decade of experience in helping UK businesses leverage technology for growth and efficiency.