Daniel James opens account in United walkover
Emerson draws a fine save from De Gea, who parries for a corner... and that's it! 4-0 to United! What a start for Solskjaer!
Pulisic aims a cross at Giroud but it's too high even for the burly Frenchman. Nothing coming off for the Blues today.
The transfer ban and loss of Eden Hazard obviously hasn't helped Chelsea's cause and they have been far from terrible this afternoon, hitting the woodword twice and causing United problems early on, but the fact is they are in the relegation places after their first game. The only way is up, baby, as Yazz sung so memorably.
Four minutes added.
The normally unflappable Kanté goes in the book for a cynical trip on James.
Pedro goes close but his attempt doesn't require the intervention of De Gea. It just isn't Chelsea's day...
And Greenwood almost gets in on the act from a Wan-Bisska cross, but his effort is bloked.
Greenwood on now for United, who have several youth academy products out there now. It's almost like old times at Old Trafford.
Mason Mount gives David de Gea some work to do with a shot from distance but it's pan y tomate for the United keeper.
As it stands, this result leaves Chelsea in 19th place in the Premier League...
That took a bit of a deflection on the way in but it will count as James' goal. What a dream debut for the 21-year-old.
And James finds the back of the net from Pogba's layoff after a burst through the midfield from the Frenchman! It's a rout now.
Rashford almost wriggles through for a hat-trick shout but a last-ditch challenge prevents him getting a shot off.
Daniel James is on for his Manchester United debut.
Chelsea are all over the shop now with misplaced passes and a complete inability to get out of their own half. We doubt Lampard envisaged this when he arrived in Manchester. We doubt the majority of United fans did either.
N'Golo Kanté trots on for Chelsea, approximately 72 minutes too late for the visitors.
That has stung Chelsea hard... both sides were fairly even before that double whammy but it's difficult to see Lampard's side coming back from this.
Gooooooooooal! Rashford again! Two goals in two minutes for the home side and that is probably that. Pogba played him through and the England forward ran on to it and buried a shot past Kepa.
The Frenchman makes it 2-0 and that record of United's is starting to look pretty safe now.
Goooooooooal! Martial! Pereira slings a cross in and the Frenchman has a tap-in to open his account for the season.
But even he can't reach that wild cross-field ball from McTominay, which lands well over the touchline.
United win a corner as Wan-Bissaka again causes a bit of havoc down the right. He looks like a decent signing, the former Palace man.
Barkley the player to make way.
Here comes Pulisic for his competitive Chelsea debut. Will the tricky American manage to pull something out of the hat?
Pereira takes, deep into the right channel, Wan-Bissaka manages to get a cross in but Chelsea clear.
Jorginho booked as he brings down Lingard in full flight about 25 yards out...
Courtesy of OPTA: Manchester United have never lost a Premier League match at Old Trafford when leading at half-time, drawing 16 and winning 263 of their 279 such games.
Lingard finds his way into the ref's book for a stamp on Kovacic. No malice, just clumsy from the United forward.
Chelsea get the ball rolling for the second 45.
We're about to find out... the teams are out for the second half.
And that's the half. United take a 1-0 lead into the break but Chelsea can feel a little aggrieved with the woodwork coming to the home side's rescue more than once in the opening 45.
Two minutes added, Chelsea pushing for that psychological equaliser...
Luke Shaw and Martial have a decent opportunity on the break from midfield but too much hesitation sees the chance go begging as both players simply pass the ball to each other a few times, allowing Chelsea to streak back to cover.
Good pressure from Emerson prevents Wan-Bissaka from breaking out down the right.
Woodwork again! Emerson has De Gea well-beaten at his near post but his shot hammers the bar and pings out on the far side for a goal kick.
A nice move from Chelsea puts Barkley through on De Gea but the Spaniard makes a trademark save with his boot and concedes the corner.
Zouma, who it's fair to say is not having the best of halves, goes into the book.
Pedro has a pop but all De Gea has to do is hold up his gloves as though he's asling a car to stop and the ball thuds into them.
The ball is in the Chelsea net but Rashford was about two metres offside there.
Still, you can't please all the people all the time. Quick poll for United fans... who exactly do you want in? Mike Ashley has worked out a treat at Newcastle and fans of Portsmouth, Bolton and several others probably won't be too sympathetic.
Chelsea trying to make something happen now but United's defence are holding firm against every Blues incursion. That's a balm for the Old Trafford fans, with last season's version conceding more goals than any other side that finished in the top nine.
Bit of a lull as United struggle to play it out from the back - to the considerable annoyance of Big Sam if he's watching no doubt - before the ball evetually finds it way to Kepa.
The home side come surging forward again and Wan-Bissaka does well to turn in a corss after some neat footwork on the right. Kepa is forced to punch clear under pressure from Rashford and Chelsea are on the ropes a little at the moment.
United come forward dangerously again but the move is pulled back for a foul on Christensen by Pogba. Bit of a trailing elbow from the Frenchman there.
A United free kick into the area sows panic in the Chelsea defence and Harry Maguire wins a corner... The Blues clear easily enough though.
And Rashford finds the back of the net! Kepa went the right way but the England forward put it high and wide enough to evade the Chelsea keeper's grasp!
Penalty! Zouma clips Rashford in the area and the ref points to the spot! Rashford steps up to take...
Remember those "I saw Forlán score" t-shirts from back in the day? Perhaps it's time to bosh out a few with "I saw Martial smile." He's got a face like a channel storm as he stalks around the pitch at the moment.
McTominay is down after a thump in the ribs but other than having the wind knocked out of him he's fine to continue.
Mason Mount, who has been Chelsea's most eye-catching player so far, chances his arm from a ways out but it's straight at De Gea. Decent hit from the England under-21 midfielder, who spent last season at Derby with Lampard.
Nice from Chelsea as Azpilicueta picks up a knock-down on the right and fizzes a low cross in that just eludes Abraham.
A right old howler from Kurt Zouma as he feeds the ball straight to Martial, but the United striker hits the gift straight at Kepa, who gathers with no real fuss.
Decent start from Chelsea, who are knocking it about with confidence. United largely chasing shadows at the moment.
Woodwork! Tammy Abraham! That's a cracking strike from the England international, who knocked in 25 goals for Aston Villa on loan last season as the Brummies achieved promotion.
And we're off! United get the ball rolling.
A few lass than savoury welcomes for Lampard, if our lip-reading is accurate, but the Chelsea boss, looking dapper in an open neck shirt and whistle, gamely applauds and allows himself a little smile.
The teams are in the tunnel, David de Gea sporting the armband for United, Azpilicueta doing the honours for Chelsea after Eden Hazard's departure.
There's been quite a buzz surrounding United's acquisition of Daniel James as well, let's see if he gets a chance off the bench today for the Red Devils.
Chelsea finished 26 points behind champions Manchester City last season while United fell 32 points short... that's quite a distance to make up this season and we have to say looking at what Pep's lot did to West Ham yesterday and Liverpool's destruction of Norwich, it may be that this turns out to be a consolidation season for both of today's sides.
Ole promising some attacking football from United this afternoon. Looking at that Chelsea back line, probably not a bad idea...
So Pulisic, Chelsea's great hope for the season, starts on the bench. We imagine that's just Lampard looking to bed him in gradually rather than pile too much pressure on his shoulders at this early stage. An opener against United at Old Trafford, while not the daunting task that used to be, is still pretty much a free swing though.
And here's Lampard's first Chelsea XI, with Tammy Abraham leading the line after a stellar pre-season but no place for Pulisic...
Here's United's starting XI, which includes Paul Pogba. Will be instructive to see what the Frenchman does today after his plans to scarper from Old Trafford were all-but scuppered on deadline day...
Much will be expected of Mason Mount this season but all eyes will on Christian Pulisic on Sunday. Chelsea snuck through a deal for the American 20-year-old before the ban came into effect and although it is a little much to expect him to immediately fill Hazard's boots, the early signs have been promising.
That leaves Lampard in an enviable position really for a novice coach - the youngest in the division - with one year of experience under his belt: succeed, and he's a genius. Fail, and he's not to blame after the departures of Eden Hazard and his goals and David Luiz and his eccentric defensive stylings. Antonio Rüdiger is out injured meaning Andreas Christensen and Kurt Zouma will probably form the central defensive partnership - and there's only so much anyone can do with that.
Meanwhile, Frank Lampard makes his debut as Chelsea boss after a summer of zero incoming activity at Stamford Bridge due to the club's transfer embargo. Holding on to Callum Hudson-Odoi was the best Lampard could have hoped for and although the England man is injured he will be more than required when he returns after being largely ignored last season.
No pressure, 'Arry...
United added Harry Maguire, making the international international the most expensive defender in the history of the game, so some sort of defensive solidity will be expected from the outset with the addition of marauding full back Aaron Wan-Bissaka an interesting incognito. But it is up front where Solskjaer's managerial chops will be tested to the fullest as long-suffering Old Trafford fans watch to see if he can coax anything resembling form from Alexis Sánchez, Anthony Martial and Marcus Rashford, having sold last season's top scorer Romelu Lukaku to Inter for a loss.
Manchester United host Chelsea at Old Trafford on the opening weekend of the Premier League season in what should be a fascinating encounter. Solskjaer's United have perhaps not been as active in the transfer market as many expected and his coaching credentials will come under scrutiny this season after he was given a pass last term for simply not being José Mourinho.