Manchester United failed to make it six Premier League games unbeaten under Ruben Amorim, falling to a 1-0 defeat at home against Everton.
Former Red Devils manager David Moyes got his first win at **Old Trafford**as a visiting manager, despite his team playing over 75 minutes with 10 men.
Amorim was forced into making changes to the side that played against Tottenham Hotspur before the international break, with Harry Maguire picking up an injury in the 2-2 draw, while Matheus Cunha picked up a knock in training.
Joshua Zirkzee was handed a rare start, and defender Leny Yoro was also recalled to the starting lineup.
The visitors began brightly, while Amorim's side struggled to string passes together in the final third.
However, in controversial fashion Idrissa Gueye was sent off for hitting teammate Micheal Keane and it was expected that it would be a routine win for the hosts.
Despite this, United produced their worst league performance of the season and were behind at the break due to a brilliant solo goal from Kieran Desbury-Hall.
After the break, the Red Devils failed to improve and while Jordan Pickford made a few smart saves to deny Bruno Fernandes, Bryan Mbeumo and Zirkzee, it was a relatively comfortable win for Moyes' men.
Here are the key takeaways from the contest.
Amorim's stubbornness proves costly
The players will get the majority of the blame for their complacent performance against a team playing with 10 men, however Amorim's lack of in-game management was concerning. As soon as Gueye was sent off, Moyes adapted and switched shape, which is something that the Portuguese manager failed to do.
There was no need to persist with a back five, as the three centre-backs were essentially making one player. Amorim's system could have worked but the wing-backs needed to be pushed up higher and perhaps even one of the centre-backs needed to be moved into a slightly more advanced position.
The Old Trafford faithful thought these changes would come at half-time, however only Mason Mount was introduced with Amad Diallo moving to right-wing-back where he should have started the contest. Amorim's stubbornness was on display again, but this time he made a like for like substitution with Patrick Dorgu replaced by Diogo Dalot.
This was a new all-time low in the Amorim era and the head-coach deserves plenty of blame for his team's lacklustre display.
Unbeaten run comes to an end
United fans were under the impression that their team had finally turned a corner in recent weeks. In the Premier League, the Red Devils were unbeaten in five matches, their best run under Amorim, with wins coming against Sunderland, Liverpool and Brighton and two consecutive draws away to Nottingham Forest and Spurs.
Even in the two draws, United came from behind late on to snatch an additional two points, but it seems the poor habits from last season have crept back in. Their unbeaten run came to an end in unforgivable fashion, losing against 10 men at home without any kind of fight.
It was a complacent performance from start to finish, with players misplacing simple passes and playing without any kind of urgency. The narrative around United's supposed turnaround has now completely changed-they've gone from being on the verge of extending their unbeaten run to six games to now being winless in their last three matches.
Possession struggles continue
In recent weeks, Amorim has shifted away from a heavy possession tactic and has instead favoured a more direct approach. This change has been influential in United's improved form, however a recurring issue still needs to be resolved by the head-coach.
United have performed well against top sides this season and this is mainly due to them having less of the ball, which means they can be that bit more direct and purposeful during transitions. However, in games they are expected to dominate the ball, they have struggled and this continued in the match against Everton.
The Reds had the majority of the ball but were unable to break down the Toffees low-block. While Pickford did make some saves, they were relatively routine, as United struggled to create clear-cut opportunities and resorted to shooting predominately from distance.
Amorim's side have a favourable set of fixtures coming up, however if they are unable to improve on the ball, it is unlikely that they will move up the table.
Zirkzee fails to impress
In recent weeks Zirkzee has been linked with a move away from Old Trafford due to limited playing time. The striker has rarely featured for United this season, due to the club not qualifying for any European competition and also being knocked out of the Carabao Cup.
Zirkzee was handed his first start of the season in the absence of the injured Cunha. The Dutchman began the game poorly with his loose touches, poor passing and weak holdup play pounced upon by the opposition defenders.
The forward did grow into the contest, but his influence was limited and he didn't do enough across the full 90 minutes. He isn't suited to the number nine role and probably works better as one of the attacking midfielders.
Zirkzee thought he levelled the score, when he got on the receiving end of Luke Shaw's teasing cross, but Pickford reacted brilliantly to keep his clean-sheet. Following his poor display, it is unlikely that Zirkzee maintains his starting role against Crystal Palace.