Manchester United bounced back from last week's loss at Bournemouth with an entertaining 3-1 victory over Brighton at Old Trafford.
Goals from Andreas Pereira and Marcus Rashford, either side of a Davy Propper own goal, gave United all three points, with Lewis Dunk making it 2-1 but seeing United respond just two minutes later.
United duo Scott McTominay and Victor Lindelof overcame knocks as Brandon Williams made his full Premier League debut against Brighton.
Teenager Williams replaced suspended Ashley Young at left-back as Ole Gunnar Solskjaer made five alterations to the win against Partizan Belgrade, with David De Gea, Lindelof, Daniel James and Andreas Pereira the others brought in.
Brighton named Shane Duffy and Leandro Trossard in place of Adam Webster and Pascal Gross at Old Trafford.
United went ahead in the 16th minute when Pereira's effort deflected in, and then doubled their lead three minutes later when Davy Propper bundled the ball into his own net.
Lewis Dunk gave Brighton hope, halving the deficit in the 64th minute, but Marcus Rashford went up the other end and made it 3-1.
Manchester United closed out a 3-1 win over Brighton at Old Trafford, after a late injury to McTominay.
Ole Gunnar Solskjaer: "Yeah, I think it's our best performance of the season. Of course you can go back to Chelsea but today I thought the reaction after they scored was fantastic.
"Sometimes this season we've asked that when you get one or two up to go for the next one... and how we didn't end up five, six, seven (today) I don't know, or we don't know, the players don't know.
"But exhilarating, entertaining and great to see the boys enjoy themselves.
"These six weeks or whatever it has been since the international break when we started against Liverpool, we had five wins and a defeat after the Liverpool game.
"Of course the Bournemouth game was disappointing but we've had loads of answers to what we're trying to do and if we don't get confidence from this, I don't know what to tell them."
On 19-year-old Brandon Williams, Solskjaer added: "Brandon was excellent. He's played well before but of course the first start at Old Trafford in a Premier League is always... you don't know how he's going to react, but he seems like he's looking forward.
"I told him on Thursday 'just look forward to this one'. I thought it was more fair to him that he didn't play on Thursday. An excellent performance.
"He's done nothing wrong since he's come into the team. He's making it hard for me to leave him out, definitely.
"He's really, really impressed me, I have to say. He's definitely making it hard for me to leave him out."
On Scott McTominay's injury: "He went over on his ankle. It's a painful one. Sometimes that's... I've had one and I was out for eight weeks. But then again sometimes you're back in two weeks, so I don't know. He's in for a scan tomorrow... but it looked painful and he's not one for rolling around."