Just when the Portuguese coach likely believed the team's momentum would never turn, Manchester United secured Oliver Glasner's team's opening Selhurst Park setback in the Premier League since February.
The Austrian coach's side had been rampant and deservedly took the lead via the French striker's second penalty attempt. But they could not to capitalize on their control and having failed to find the net at Selhurst, the visitors responded with a rapid double from their summer signing and Mason Mount.
The match proved disappointing day concluding after multiple matches for Glasner, who saw Ismaïla Sarr leave injured with a worrying issue in the first period.
His Portuguese counterpart may have kept his reactions subdued when proceeding down the tunnel right after the final whistle.
Amorim had played down comparisons between the two coaches' game philosophy in the buildup, although he acknowledged that the opposition "currently execute things better than us|aspects superior to ours|elements more effectively".
The reaction following the poor performance against 10-man Everton meant modifying the wide defenders, featuring the Ivorian occupying the right wing as Diogo Dalot assumed Dorgu's position.
The visitors likely felt an opportunity to profit since they possessed extra rest days and nearly scored first within the first minute.
A lengthy throw-in caused chaos in the home penalty box yet remarkably the former United goalkeeper made a close-range stop near the net to deny Casemiro.
The near miss functioned as a warning for Glasner's men post the lunchtime beginning that was scheduled by the television schedulers.
Quickly opportunities started arriving in quick succession. Following wasted numerous attempts during European action, it looked perhaps it wouldn't be the striker's opportunity when he twice dragged efforts missing the goal during the first quarter.
However during a period when talks over the striker's new deal faced delays, it was the France international who provided the first goal.
Another precise pass from Wharton enticed the young Frenchman into making contact after recently producing a brilliant block to prevent the Spaniard, Yoro was forced to foul his compatriot in the penalty box.
Palace's shot-stopper came out in a baseball cap to block the sun from the setting sun yet he'll feel regret for permitting the visitors to draw equal following halftime.
Glasner's team was unprepared via a fast United dead ball allowing the forward to control with his chest while turning simultaneously to generate a strike that found the top corner.
Having survived a chaotic situation where Zirkzee almost scored again at the wrong end, their day improved further a few minutes later as the Dutch attacker was fouled on the edge of Palace's box from the Palace defender.
There was a moment's hesitation within the barrier as the captain passed the dead ball to the midfielder enabling the Englishman to score past the keeper using a fierce strike.
Missing the Senegal international's acceleration to utilize, the home team struggled to create additional opportunities while the visitors managed to see out an important win which moves United move above Palace into sixth place.