Thomas Tuchel's side took a deserved lead into half-time thanks to a fine finish from Kai Havertz, who had scored the winner in the Champions League final in May.
Havertz clipped a clever shot high beyond Bernd Leno after being played into space by Timo Werner, who missed a good chance for a second three minutes later.
The Gunners, who brought on new signing Ben White at half-time, drew level 69 minutes in when Granit Xhaka headed in Nicolas Pepe's cross.
However, Chelsea's lead was restored within four minutes as Tammy Abraham slotted a precise finish beneath Leno following a mistake by Hector Bellerin.
Arsenal should have been given an equaliser when Joe Willock crashed a shot off the crossbar and the ball appeared to bounce over the line, but with goal-line technology not in use, it was not awarded.
Mikel Arteta will also be concerned to see midfielder Thomas Partey forced to go off with what appeared to be an ankle injury in the first half.
Chelsea will now face Tottenham on Wednesday before Arsenal take on their north London neighbours on August 8.
Russia invaded Ukraine on Thursday and the conflict escalated over the weekend, events which have led to widespread condemnation of Russia and strict sanctions placed on the country in response.
On Thursday, Abramovich's name was brought up in the United Kingdom Houses of Parliament as possible sanctions against the Russian state and individuals were discussed.
Such sanctions are yet to be placed on the Russian-Israeli businessman, though Abramovich announced he was handing over the "stewardship and care" of Chelsea to the trustees of its charitable foundation on Saturday.
Chelsea subsequently issued a statement to describe the conflict in Ukraine as "horrific and devastating" and say they are "praying for peace".
A spokesperson for Abramovich on Monday told the PA news agency that the Chelsea owner was involved in peace talks between the two nations.
"I can confirm that Roman Abramovich was contacted by the Ukrainian side for support in achieving a peaceful resolution, and that he has been trying to help ever since," Abramovich's spokesperson said.
"Considering what is at stake, we would ask for your understanding as to why we have not commented on neither the situation as such nor his involvement. Thank you."
Prominent Ukrainian film director and producer Alexander Rodnyansky also confirmed Abramovich's involvement.
"I can confirm that the Ukrainian side have been trying to find someone in Russia willing to help them in finding a peaceful resolution," Rodnyansky reportedly said.
"They are connected to Roman Abramovich through the Jewish community and reached out to him for help.
"Roman Abramovich has been trying to mobilise support for a peaceful resolution ever since. Although Roman Abramovich's influence is limited, he is the only one who responded and [has] taken it upon himself to try.
"If this will have an impact or not, I don't know, but I am in contact with [Ukraine president Volodymyr] Zelensky's staff myself, and know that they are grateful for his genuine efforts."
Two goals from Abu Kamara and another from Marlon Pack maintained the momentum for John Mousinho’s men.
Just before the half-hour mark, Paddy Lane cut the ball back to Kusini Yengi in the heart of the box, but the Pompey forward blasted it over the bar.
The visitors took the lead on the stroke of half-time. Pack launched a long throw to the back post and Kamara bundled the ball into the net.
Pompey doubled their lead in the 62nd minute when Lane cut in from the left to reach the near post and lay the ball off to Pack, who poked it in from close range.
Shrewsbury came close to pulling a goal back with under 20 minutes remaining. Mal Benning fed a ball into fellow substitute Max Mata in the box. The striker held off a defender before shooting but his effort went over.
Kamara completed the scoring with six minutes remaining after being played through on goal by Christian Saydee, rifling the ball into the net.
The Bianconeri maintained their unbeaten start to the Serie A season, but missed the chance to go second behind leaders Inter after a game lacking in quality and chances.
With the likes of Dusan Vlahovic and Arkadiusz Milik out injured, Juventus began the game without a recognised striker, as Teun Koopmeiners and Weston McKennie led the line.
Koopmeiners hit the side-netting from a tight angle after 10 minutes, while Kenan Yildiz grazed the post following a fine individual run midway through the half.
Alvaro Morata had Milan's best chance at the other end, but the former Juventus striker could only head wide from Rafael Leao's free-kick.
Opportunities did not fall as freely in the second half either, and both teams left the field to a chorus of boos on the referee's final whistle.
Data Debrief: Stubborn Juve take clean sheet tally into double figures
Juve are the first team to register 10 clean sheets in their opening 13 matches of a Serie A season since Roma (also 10) in 2013-14.
The Bianconeri have also kept five clean sheets in their first six away league games in a campaign for only the fourth time, also achieving the feat in 1967-68, 2004-05, 2023-24.
Meanwhile, Thiago Motta is only the fifth Juventus manager to go unbeaten in his first 13 league matches in charge (won six, drawn seven), after Jesse Carver, Cestmir Vycpalek, Antonio Conte and Maurizio Sarri.
The Reds got off to an awful start when Christian Pulisic finished Milan's deadly counter-attack in the third minute, aided by Liverpool's disorganised defending on their return to the competition after a year's absence.
Arne Slot's side turned things around, however, as Ibrahima Konate equalised in the 23rd minute when he leapt high above a crowd of defenders to head in Trent Alexander-Arnold's free kick.
Virgil van Dijk put Liverpool ahead after nodding home Kostas Tsimikas' corner prior to the break before Dominik Szoboszlai sealed victory in the 67th minute, slotting into the far corner from Cody Gakpo's cross after Milan gave up possession.
Slot's first Champions League game at the helm of Liverpool ended in deserved victory, and it was a terrific response from his team after their shock 1-0 loss to Nottingham Forest in the Premier League on Saturday.
Data Debrief: Defensive delight for Reds
With Konate and Van Dijk both on target, Liverpool had two defenders score in the same Champions League game for the first time.
It marked a fitting way for Van Dijk to celebrate a landmark appearance, becoming just the third Dutch player to score on his 50th outing in the competition, after Ruud van Nistelrooy and Roy Makaay (both in 2005).
Alexander-Arnold's assist for Liverpool's equaliser was also his 80th for the Reds. Since his debut in October 2016, only Kevin De Bruyne (146) and team-mate Mohamed Salah (90) have provided more in all competitions among Premier League players.
Those defensive performances at the other end of the pitch helped Liverpool to a fifth win in their last six away games against Italian sides in all competitions (L1), having won just three of their first 14 such visits (D3 L8).
The last-16 clash was already over as a contest by the 23rd minute after Chukwueze's brace, along with goals from Tijjani Reijnders and Rafael Leao handed Milan a 4-0 lead at San Siro.
Davide Calabria added their fifth 11 minutes after the interval, though Samuele Mulattieri managed a consolation three minutes later, before Tammy Abraham rounded off the win in the 61st minute.
Chukwueze opened the scoring in the 12th minute when a Reijnders ball over the top put him through one-on-one with Giacomo Satalino, and after his first effort hit the upright he tapped in the rebound.
Reijnders drilled home from outside the area five minutes later and Chukwueze netted his second in the 21st minute, curling beyond the reach of Satalino after an Abraham lay-off.
A no-look pass from Ruben Loftus-Cheek freed Leao to score two minutes later before Christian Pulisic's lofted cross bounced off the post and Calabria reacted quickest to convert in the second half.
Mulattieri's effort squirmed under Lorenzo Torriani to finally give Sassuolo something to cheer about, but Abraham finished off the rout, tucking his finish around Satalino just past the hour.
Data Debrief: Rampant Rossoneri
Milan's victory came by an impressive scoreline, though the underlying stats suggest the 6-1 win was somewhat flattering on the home side's performance.
Indeed, the home side accumulated just 1.89 expected goals (xG) from their 15 attempts, but the quality of finishing proved too much for Sassuolo to handle.
The January signing kept out Danny Rose’s header in the second minute of time added on to ensure play-off-chasing Stanley avoided defeat against their struggling visitors.
Accrington’s best chances came in the first half, with Harvey Cartwright pushing over a Ben Woods strike after two minutes and keeping out Jack Nolan’s low drive on the half-hour mark.
Coleman, whose side are two points off the top seven, said: “We didn’t play anywhere near like we can. We started off really brightly, had a couple of good chances but didn’t take them and surrendered possession cheaply.
“We have got to take the positives of the clean sheet and we were resilient with our defending, but we brought the problems on ourselves by not keeping the ball well enough and not passing the ball better.
“We weren’t good today, but we know we can play better than that and the pleasing thing is we didn’t concede.
“We showed character to not go under, our keeper has made a great save late on and we have got to build on two clean sheets on the bounce and now we have got to think about how we can play better.
“Radek has hit ground running with us, that’s two clean sheets and he has integrated with the lads well and it will be a good move for both parties.”
David Artell believes his Grimsby side are moving in the right direction.
The Mariners, who are in 20th place in League Two, dominated possession and chances, albeit without being able to find a goal that would have earned them a first win of 2024.
Artell said: “It’s another clean sheet on the road. That’s two on the spin and we were much better than last week (a 2-1 home loss to Tranmere) which was unacceptable.
“We have come here to try to play football, but we have not what we got we deserved, as we deserved to win, but what let us down was our decision-making in the final third.
“We couldn’t drive home the control we had.
“They had a shot in the second minute, but I can’t remember anything else after that.
“We have been in the ascendancy, been in control but haven’t made the crucial decisions in the final third which our play warranted.
“It was an unbelievable save from Danny’s header at the end, but we looked solid and there is plenty to build on. It was a good away performance. We are just missing a goal or two, but I am sure they will come.”
The Saddlers had won their previous two league games but goals from Tommy Leigh and Joe Pritchard secured victory for Stanley.
The home side took the lead after nine minutes when Pritchard charged forward and Jackson Smith could only push his shot into the path of Leigh, who slotted home his sixth goal of the season.
The Reds created the better chances, with Josh Woods bursting through after 31 minutes with only Smith to beat but the Saddlers goalkeeper denied Accrington a second.
Walsall equalised in the fourth minute of added time when Joe Gubbins was adjudged to have fouled captain Donervon Daniels in the area and Freddie Draper drilled a penalty into the corner of the net.
Stanley regained the lead in the 57th minute when skipper Pritchard got the ball on the left and his cross evaded everyone and nestled into the far corner of the net.
Woods chipped an effort over for the home side late on as he looked to make the game safe.
In a statement, the FA said the allegations relate to 312 bets placed on matches between February 8 2022 and March 10 2023.
Clark has until May 17 to respond to the charges.
The 24-year-old Welshman made 49 appearances in all competitions for Stanley this season as they were relegated from Sky Bet League One.
Aaron Drinan gave Swindon the lead early in the second half but Jack Nolan’s penalty was followed by substitute Henderson’s 82nd-minute winner.
The hosts forced the best chance of the first half when Dawson Devoy had a shot that led to a bit of pinball inside the six-yard box, with Charlie Austin, Drinan and Paul Glatzel all having swipes that could not quite put the ball in the Accrington goal.
Two minutes into the second half a Swindon corner dropped in the middle and Drinan was the most alert in the penalty box and he stole a march on the defenders before crashing a shot home from close range.
The visitors levelled 10 minutes later as Shaun Whalley was tripped by Devoy in the box and Nolan stepped up to score his 13th goal of the campaign.
And they won it with eight minutes remaining when Henderson was given space to drive infield and he let fly with an effort from 30 yards out that flew beyond Jack Bycroft at his near post.
The Red Dragons dropped out of the automatic promotion places as Stanley moved into seventh spot.
Wrexham started well and top scorer Elliot Lee had his header superbly tipped away by Jon McCracken in the 14th minute.
The Red Dragons went close again in the 33rd minute when, with Stanley appealing for offside, Paul Mullin was clean through but his strike crashed off the crossbar.
Accrington took the lead from the penalty spot five minutes after the break . Wrexham’s second-half substitute Will Boyle was adjudged to have pulled down Brad Hills following a corner. Leigh sent keeper Arthur Okonkwo the wrong way for his fifth goal of the season.
Stanley made it two in the 73rd minute when Okonkwo fumbled Jack Nolan’s long-range strike and Korede Adedoyin pounced with the ball falling to Longelo to fire into the empty net.
The visitors had the chance to pull one back in the 98th minute after Hills fouled George Evans, but Mullin’s penalty hit the underside of the crossbar and bounced out to add to Wrexham’s misery.
The draw left Stanley two points outside the top seven, while the Mariners, who came so close to snatching victory at the death, remain in 20th place.
Captain Danny Rose’s header in the second minute of added time was superbly saved by on-loan Manchester United goalkeeper Radek Vitek.
Grimsby keeper Harvey Cartwright tipped over a Ben Woods effort in the second minute and also pushed away a low angled drive from Jack Nolan on the half-hour mark.
Stanley’s Radek kept out Arthur Gnahoua’s long-range effort, their only shot on target in the first half.
After the break it was Grimsby who dominated the chances.
Former Stanley defender Harvey Rodgers headed wide from a corner, while substitute Kieran Green could not find the target following another corner.
Green headed a Denver Hume corner just over the crossbar in the 82nd minute before Rose came so close to earning Grimsby a first win of 2024.
Bryn Morris put County ahead after 13 minutes with a stunning 25-yard strike that arrowed into the top corner.
But Accrington levelled nine minutes later when Jack Nolan crossed for Alex Henderson to head in at the far post.
Shaun Whalley then flashed a shot across goal before Tommy Leigh missed the target with a header from close range.
Leigh made amends just 20 seconds after the interval when he controlled Ben Woods’ ball into the six-yard box on his chest before hooking it past a helpless Jonny Maxted in the home goal.
Nolan should have made it 3-1 but somehow fired high over the bar, and it was left to substitute Joe Pritchard to wrap up the win midway through the second half when he prodded in Whalley’s pass from a few yards out.
County’s misery was complete when Adam Lewis was sent off in stoppage time after a touchline fracas.
The Exiles started well, with Seb Palmer-Houlden blasting over in the third minute while Jack Nolan’s 22-yard strike for Stanley was pushed over the bar by keeper Nick Townsend.
Stanley, relegated last season, opened the scoring in the 24th minute when Tommy Leigh’s through ball split the Newport defence and found Nolan who rounded Townsend and slotted home.
Kelvin Mellor’s strike for Accrington was narrowly over the bar while, at the other end, Brad Hills hooked a Ryan Delaney header off the line in the eighth minute of first-half added time.
Stanley came close to a second after 50 minutes but Townsend superbly kept out a Lewis Shipley header.
Newport then upped the pace with Adam Lewis and Will Evans coming close to an equaliser.
The Reds made it safe in the 80th minute when substitute Seb Quirk’s ball into the area was headed home by fellow substitute Shaun Whalley.
They added a third in the fourth minute of added time when a cross by Hills was forced home from close range by Korede Adedoyin.
Joe Pritchard’s brace either side of Tommy Leigh’s effort gave Stanley a 3-0 lead and, despite two goals from Dons substitute Omar Bugiel, Brad Hills added a fourth late on.
Stanley opened the scoring in the fourth minute when Dons keeper Alex Bass’ fumble allowed captain Pritchard to bundle the ball into the net.
The visitors deservedly doubled their lead five minutes later when Leigh let go of a stunning 25-yarder that nestled in the top right corner.
Dons boss Johnnie Jackson made a triple switch at half-time but within 24 seconds of the restart the hosts were 3-0 down, Bass parrying straight into the path of Pritchard to tap home.
Jackson’s changes took effect after 50 minutes when Bugiel swept home with his left foot and the substitute looked to have set up a grandstand finish when he forced home a second from James Tilley’s corner.
But the hosts’ comeback was quashed in the 83rd minute when Norwich loanee Hills headed home Pritchard’s free-kick.
Achraf signed a two-season loan deal with Dortmund in 2018 and the Morocco international full-back has starred for the Bundesliga side.
The 21-year-old is set to leave Dortmund at season's end but not necessarily for a return to the Santiago Bernabeu in Madrid.
"Real Madrid are the club I call home," Achraf, who has scored 10 goals during his time with Dortmund, told Telefoot. "I've really enjoyed myself there and played lots of games there.
"If Madrid want me to go back, I'll go back. And if not, I'll have to write the next chapter at another great club."
Achraf added: "[Madrid head coach Zinedine] Zidane is the man who gave me my chance and the confidence to be able to play professional football.
"I'm grateful to him for his faith in me and the way he has treated me. I'll always be grateful to him."
Reflecting on his decision to move to Dortmund, Achraf said: "When I stop and think, I realise that it was the best decision I could have made, because I'm playing and developing as a footballer, which is what I need to be doing."
Achraf and Dortmund are preparing for Wednesday's Champions League last-16 return leg away to Paris Saint-Germain.
Dortmund won the opening leg 2-1 thanks to Erling Haaland's second-half brace and Achraf is eyeing silverware.
"I hope we can achieve as much as possible; in the short term beat PSG, and in the longer term try to win a trophy like the Bundesliga or go as far as possible in the Champions League," said Achraf, who has scored seven goals in all competitions this season.
"Anything's possible. Hopefully we can go as far as possible and win it if we can. And if not, then come away with the feeling that we've done well and given our all."
Top scorer Armstrong scored one and set up Che Adams, Ryan Fraser and Sekou Mara as Saints leapt into the top two for the first time since the opening day and closed the gap to table-toppers Leicester to 10 points.
Saints are now unbeaten in 19 league games and 20 in all competitions, which is their best run since becoming a Football League club in 1920.
The club’s all-time record, the only better than the current run, of 24 in 1896 and 1897 came when they were known as Southampton St Mary’s and had yet to move to the Dell.
The hosts would enjoy the better of the first half but the first two minutes belonged to Wednesday.
First, Saints keeper Gavin Bazunu took a heavy touch and was mugged by Josh Windass, but the attacker could not squeeze in.
From the corner, Michael Ihiekwe headed wide – but the visitors would not have another first-half shot as Saints monopolised the possession.
Centre-back Ihiekwe had to think fast to run back onto his own goal line after Fraser had volleyed into the ground and over goalkeeper Cameron Dawson.
Taylor Harwood-Bellis headed a corner over but otherwise, it was a test in patience until Adams opened the scoring in the 35th minute.
Adams, who is out of contract in the summer and has been linked with a Premier League move this month, latched onto an Armstrong cross via a Bambo Diaby error, beat a defender and lashed into the bottom corner.
It was the Scotland international’s eighth goal of the season, and Armstrong’s 10th assist.
Wednesday brought on Ashley Fletcher and Will Vaulks at the break and rallied when the former pinged a low effort towards the bottom corner, with Bazunu flinging himself to his right to save.
In the 63rd minute, Saints gave themselves daylight with a smart counter which saw Adams nick the ball off Diaby and slot through to Stuart Armstrong. He found Adam Armstrong in acres of space to notch for the 14th time this campaign.
Bazunu battered away a Windass free-kick before Di’Shon Bernard cleared Adam Armstrong’s attempt off the line as the game became open.
Fraser continued from the two goals he scored against Walsall in the FA Cup by adding a third in the 75th minute.
The Newcastle loanee steered in but Adam Armstrong’s burst, stepovers and vision to pick out Fraser across the box was the catalyst for the goal.
Armstrong was at it again with five minutes to go when he squared for substitute Mara to tap in to make it nine straight St Mary’s wins.
Omar Bogle cancelled out an early Nick Tsaroulla strike for the Exiles but the Reds took control after the break on a swelteringly hot day in West Sussex, with Ben Gladwin adding the fourth.
Crawley made the perfect start with Tsaroulla bursting through after a pass by Liam Kelly to drill the opener under goalkeeper Nick Townsend after only five minutes.
Newport hit back to equalise in impressive fashion with striker Bogle firing in a left-foot shot on the turn from the edge of the area in the 10th minute.
Crawley re-took the lead nine minutes after the break, Campbell lashing in a low shot after Danilo Orsi had a goal-bound effort blocked.
Former Gateshead striker Campbell struck again to make it 3-1, curling a beauty into the top corner after Tsaroulla’s assist on 67 minutes.
Bogle had the ball in the net again for Newport but he was clearly offside before Gladwin rifled home from 25 yards in the 79th minute to cap a comfortable win.
Lee Carsley’s Young Lions were crowned continental champions over the summer and kick off qualification for the next edition at Luxembourg on Monday.
Under-21s boss Carsley is assisted by former England star Ashley Cole and goalkeeping coach Tim Dittmer, with Lallana joining the coaching staff for this month’s camp.
The 35-year-old is still plying his trade for high-flying Brighton, with the 2016 England Player of the Year coming off the bench in three of their opening four league games.
Lallana has now temporarily turned attentions to the Under-21s, heading to St George’s Park in a bid to learn from the set-up, while acting in a mentorship role for players.
This is not the 34-cap former international’s first dalliance with coaching.
Lallana assisted Andrew Crofts during his time as interim Brighton boss after Graham Potter joined Chelsea last September.
Chelsea defender Levi Colwill was on loan at Albion last season and, speaking after his first England senior call-up, was full of praise for Lallana’s impact on his career.
Asked for the biggest influences on his career, the England new boy said: “Last year Adam Lallana.
“I am someone who is a chilled person and sometimes I need someone to give me a bit of a push. And at first I did not really understand why he was always on me, trying to help me.
“But then once it clicked in my head, I realised that he was only trying to help me.
“I was happy and lucky to play alongside him and he definitely helped me.
“There were times when I was having an off day or not really feeling like myself and he was there, no matter what, pushing me.
“It has definitely made me wake up a bit and realise the opportunity I have got and that I cannot waste it.
“Just in training. Giving me compliments, if I needed them. If I was struggling a bit, asked me if I was alright. If I am doing well, he would push me to make sure I was still doing well. Communication.
“He was always putting his arm around me, the same as Lewis Dunk.
“At Chelsea, I have Ben Chilwell and Thiago Silva, leaders in the team for a reason. That is their job to help the young ones and I have had that. I have had the best.”
Sonny Bradley put the visitors ahead in the Sky Bet League One contest but the hosts responded impressively.
Derby were the first to threaten when Conor Hourihane capitalised on a defensive error from Donovan Pines and fired in a shot which was deflected wide.
The resulting corner saw Eiran Cashin’s header cleared off the line and then Hourihane’s 18th-minute corner was met by Bradley, whose header found the net.
Barnsley equalised 15 minutes later when an attempted clearance fell to Phillips, who chested the ball down and hammered a volley just inside Joe Wildsmith’s right-hand post from the edge of the area.
Barnsley’s Nicky Cadden had a shot comfortably saved soon after the restart but Phillips was on target again to score the winner in the 66th minute, meeting Cadden’s corner with a near-post header.
Max Bird fired in a shot which flashed wide as the visitors looked for a quick response – but they were unable to find a leveller.
The result takes Barnsley to within three points of second-placed Derby following a run of just one defeat in their last 15 games.
