Ole Gunnar Solskjaer believes the pain of the late collapse against Everton inspired Manchester United to edge past West Ham in the FA Cup fifth round.

Scott McTominay's goal, seven minutes into extra-time, earned United a 1-0 win over the Hammers in a match the Red Devils dominated, leading the shot count 17-3.

Three days earlier, Solskjaer's side let a 2-0 lead slip and then conceded a stoppage-time equaliser in a 3-3 draw against Everton that dented their Premier League title bid.

Following some soul-searching after dropping the precious points at Old Trafford, Solskjaer believes United responded in the best way possible to advance to the FA Cup quarter-finals.

"We needed to have a good result and a good feeling today because we were low after the Everton game. It's hard to take but they were really focused and did the job," Solskjaer said.

"Of course you want to win every game. We want to challenge and we want to go to the final. That's what we're here at Manchester United for.

"Sometimes you're lucky with draws in the cup – we haven't been that lucky – but obviously we move another step closer to the final."

Manchester United eventually saw off West Ham 1-0 after extra-time to reach the quarter-finals of the FA Cup, substitute Scott McTominay getting the winner at Old Trafford on Tuesday.

Ole Gunnar Solskjaer took the opportunity to give a few United fringe players opportunities to impress but ultimately had to turn to his regulars on the bench, with McTominay the one to make the difference.

United were frustrated in the first half as they struggled to make the most of their dominance over a West Ham side who offered very little in attack, with Victor Lindelof going closest for the hosts when denied by the upright.

Aside from United managing fewer shots, the pattern of the match hardly deviated after the break and it was no surprise to see it remain goalless at the end of the regulation 90 minutes.

But the hosts' superiority told in the end with West Ham unable to cancel out McTominay's 97th-minute strike.

It quickly became apparent that West Ham's plan was to pack their defence with as many players as possible and it was nearly undone just 11 minutes in, but Anthony Martial was denied by a crucial Angelo Ogbonna intervention that resulted in the Italian sustaining an injury.

But United's best chance fell to Lindelof in the 27th minute, his header from an Alex Telles corner taking a slight deflection before Lukasz Fabianski tipped it on to the post.

West Ham lost Ogbonna's replacement Issa Diop – who had clashed heads with Martial – at half-time as the recently introduced concussion substitution was used for the first time in English football, and they soon saw Andriy Yarmolenko forced off as well, former Manchester United trainee Ademipo Odubeko replacing him.

United wasted another chance a minute before Yarmolenko's exit, as Fabianski rushed out to thwart Marcus Rashford after Mason Greenwood's low cross was deflected through.

Extra-time was inevitable despite the likes of Bruno Fernandes and Edinson Cavani coming on, but a penalty shootout was not necessary, with McTominay running on to Rashford's smart lay-off and rifling a low volley into the bottom-right corner.

Manchester United's forwards have their "mojo" back after leading Tuesday's remarkable 9-0 demolition of nine-man Southampton at Old Trafford.

It was only the third instance of a team winning a Premier League match by nine goals and the first time United have won by that margin since March 1995, when they beat Ipswich Town by the same score.

While Andy Cole was the five-goal inspiration in that 1995 win, this time United shared the goals around – seven players netted on Tuesday, making it only the second occasion so many different individuals have netted for the same team in a single Premier League match.

Among them were Marcus Rashford, Anthony Martial and Edinson Cavani, providing the perfect response to Solskjaer's pre-match comments maligning the loss of his forwards' "mojo".

"Yeah, of course they have," Solskjaer said with a laugh to BT Sport when asked if they had recovered that "mojo".

"You get lots of confidence from a performance like this and the result, scoring goals is always good for forwards and the team."

He added: "We have been waiting for them to show their magic and tonight was a night they could go and enjoy.

"We haven't had too many of those where you can sit down in the second half and enjoy the football, so they enjoyed it. There were some good performances."

Alexandre Jankewitz's red card for a shocking second-minute tackle on Scott McTominay – who was also among the scorers – left Saints with an uphill battle, and Jan Bednarek followed him down the tunnel in the second half in rather more controversial circumstances.

But the focus will be on United's scoring prowess in the contest, as they put Saints to the sword.

Rashford's goal saw him move on to 83 for the club, overtaking Eric Cantona, and Solskjaer took the moment to praise the England international as he has occasionally had to contend with critics urging him to concentrate on his football amid his charitable efforts during the coronavirus pandemic.

"That's not bad," Solskjaer said of Rashford surpassing Cantona. "Eric was a fantastic player to play with and Marcus has a great career ahead of him.

"What he's done this season, this year, it just shows he can still focus on his football as well."

Manchester United manager Ole Gunnar Solskjaer described Scott McTominay as a "monster of a human being" after his goal sealed a 1-0 win over Watford in the FA Cup third round on Saturday. 

McTominay, captaining United at Old Trafford, headed home Alex Telles' corner in the fifth minute to secure United's 34th victory from their last 36 third-round ties. 

It was the Scotland international's fourth goal of the season in all competitions, one short of his best tally in a single campaign (five goals in 37 appearances last term).

"Scott has had a very good season," Solskjaer told BBC Sport. "He is being more and more dangerous, we know he can be a box-to-box midfielder.

"He should have scored a few more on set-plays before now because he is a monster of a human being. I am very happy he got the goal."

United did not have it all their own way against the Hornets, who attempted 18 shots in the match – the second-most they have had away from home this season. 

"The most important thing in the cup is that you go through so that will make everyone happy but the first 15-20 minutes I think were the highlights of our game," Solskjaer added. 

"I think we played some very good stuff, created chances and then we let them back into the game but we are through.

"I'm delighted we are through. I told them I didn't expect them to start like a house on fire. I expected them to grow into the game. The opposite happened more or less. We started brightly."

McTominay captained United for the first time and led by example, completing 45 of 56 attempted passes, creating one chance and making a joint team-high three clearances.

The 24-year-old told BT Sport: "When the manager told me it was a surreal moment. 

"I've been here since I had just turned five, so that's 18 or 19 years associated with the club and it is a huge honour. I love this club and it has been my whole life."

McTominay and goalkeeper Dean Henderson were the only two players to keep their places from the side that lost to Manchester City in the EFL Cup on Wednesday and the midfielder acknowledged a general lack of match fitness may have contributed to United's sluggish second-half display. 

"We started really well and then for the first half an hour we were really good, moved the ball really well and there was some good combination play," McTominay added.

"Then we couldn't find it after that as well. The second half I didn't think we played anywhere near our level.

"For the boys coming into the team it is difficult, they haven't played for a long time. The manager said 'get your rhythm' and he probably wasn't expecting the rhythm we got in the first 30 minutes. But then there were some tired minds, but credit to the boys."

Scott McTominay scored the only goal of the game as Manchester United booked their spot in the FA Cup fourth round with a slender 1-0 win over Watford on Saturday. 

McTominay was one of only two survivors from the EFL Cup semi-final defeat to Manchester City on Wednesday and the midfielder – captaining the Red Devils for the first time – headed his side in front after just five minutes.  

Eric Bailly and Juan Mata squandered good chances to extend United's lead before the interval, while Dean Henderson had to be alert to thwart Adam Masina.  

United rarely threatened a second during a dismal second half but they saw things out with the minimum of fuss to inflict a 10th straight defeat for the Hornets at Old Trafford.  

The hosts wasted little time stamping their authority on the tie, McTominay heading home his fourth goal of the season from Alex Telles' outswinging corner in the fifth minute.  

United goalkeeper Henderson was out quickly to deny Masina soon after, while Bailly flashed a header wide from another dangerous Telles ball into the penalty area.  

Mata fired straight at Daniel Bachmann following a superb flicked pass from Donny van de Beek as United ultimately failed to add to their advantage before half-time.  

Solskjaer brought on Marcus Rashford and Anthony Martial with just over 20 minutes remaining in a desperate bid to inject some life into the home team’s stuttering attack.  

Rashford should have put the seal on the win, but his low effort after a fine run was too close to Bachmann.