The teams are out on the field and we're nearly set to go.
The major headline news from the teamsheets is that Manchester United's Cristiano Ronaldo is on the bench against a team he tormented in many a title race gone by, as is Chelsea's Romelu Lukaku against his old club.
Anthony Taylor is the referee for this fixture. He was involved in controversy in a previous Chelsea game this season when he sent Reece James off for handball against Liverpool at Anfield. Chelsea nevertheless held on to claim a 1-1 draw.
Manchester United: de Gea, Wan-Bissaka, Lindelof, Bailly, Alex Telles, Matic, Fred, McTominay, Fernandes, Sancho, Rashford. Subs: Henderson, Dalot, Jones, Lingard, Mata, van de Beek, Greenwood, Martial, Ronaldo.
Chelsea: Mendy, Chalobah, Thiago Silva, Rudiger, James, Jorginho (C), Loftus-Cheek, Alonso, Ziyech, Werner, Hudson-Odoi. Subs: Kepa, Azpilicueta, Christensen, Saul, Barkley, Havertz, Mount, Pulisic, Lukaku.
Hello and welcome to our live coverage of this Premier League clash at Stamford Bridge between league leaders Chelsea and a Manchester United side that is in transition, but still very capable.
Off we go! Chelsea kick off at Stamford Bridge against an old foe.
Hudson-Odoi finds Ziyech inside the box as Bailly fails to get the ball clear. Ziyech spins and shoots. He can't beat de Gea though!
CHANCE! Alonso allows Hudson-Odoi to be slipped in behind. He's one-on-one with de Gea, who sticks a leg out and manages to save.
Ziyech wins a free-kick within shooting range off former Chelsea midfielder Matic. Chelsea are on the front foot.
James opts to cross the free-kick. The ball is cleared away as far as Werner, whose shot is blocked. Wan-Bissaka clears properly.
Chelsea look to slip Werner in behind, but de Gea rushes out and gets the clearance away.
Wan-Bissaka wins a free-kick off Hudson-Odoi within United's own half. Chelsea continue to labour to penetrate the Red Devils.
Hudson-Odoi cuts back for Ziyech from Chelsea's left. From outside the box, the Moroccan superstar curls his effort just over the bar.
Nice build-up from Manchester United. That's better from them, but Bruno Fernandes drags his shot wide of goal from outside the box.
James looks for Alonso at the far post. Wan-Bissaka doesn't manage to clear, seemingly catching Alonso by surprise. The Spain international miscontrols and the ball goes out for a goal-kick.
Hudson-Odoi gets the ball on the left from Loftus-Cheek and looks for the far post, but Werner flicks the cross off target.
James flashes a ball across the face of goal, but nobody is there to meet it and tap home.
CROSSBAR! Rudiger gets the ball outside the box and the fans urge him to shoot. He obliges and smashes the ball into the crossbar! What an effort!
Werner cuts inside from the left and shoots. His effort is blocked yet again.
Hudson-Odoi wins a corner for Chelsea as his shot is blocked at the near post. Following some ping-pong in the box, Matic manages to clear.
Fernandes gives possession away and Hudson-Odoi races forward, but his low bobbling shot is comfortably saved by de Gea.
Ziyech's cut-back is only partially cleared by Wan-Bissaka -- only as far as James, who nonetheless fires off target.
Fred plays the ball over the top to Sancho, who fails to keep it under control, allowing Mendy to gather.
Tempers are flaring. There's a bit of a heated exchange between McTominay and Rudiger. Moments later, Fred goes down looking for a penalty, but was never going to get one for that.
HALF-TIME: CHELSEA 0-0 MANCHESTER UNITED. Rudiger hit the crossbar and Chelsea have come close several times, but they haven't been able to breach United and the scores are level at the break.
James' free-kick delivery evades everyone and nearly creeps in at the far post. De Gea tips it behind!
McTominay picks up a yellow card for a little pull on Alonso, but there wasn't much in that.
Off we go for the start of the second half.
United are throwing bodies behind the ball in defence. Werner's shot is blocked. Rashford puts in a forward's tackle on Chalobah and picks up a yellow card.
GOAL, UNITED, SANCHO! 0-1: Jorginho gives the ball away and Sancho races free. There's nobody who can catch him and he strokes past Mendy! United lead against the run of play!
United have their tails up now. James picks up a yellow card for a foul.
Chelsea have upped the tempo, looking for an equaliser.
Alonso's corner is flicked to Werner, who fires wide of the target. He should have hit it there!
Rashford turns Chalobah, who fouls him. Anthony Taylor withholds the yellow card though.
Goalscorer Sancho is replaced by Cristiano Ronaldo. United clearly want another goal and what better poacher to bring on?
PENALTY, CHELSEA! Thiago Silva goes over in the area from a Chelsea corner and Anthony Taylor points to the penalty spot!
GOAL, CHELSEA, JORGINHO! 1-1: Jorginho steps up, sends de Gea the wrong way, rolls the ball into the bottom corner, and atones for his earlier error!
Loftus-Cheek sees a shot blocked from outside the box. The ball is worked back in to James, who cuts back for Ziyech, who fires off target!
Fernandes picks up a yellow card for a late sliding tackle on Thiago Silva.
Lingard replaces Rashford for Manchester United, while Chelsea bring Mount and Pulisic on for Alonso and Hudson-Odoi.
Ziyech tees up Werner, who has a glorious opportunity. Wan-Bissaka does brilliantly to get across and Werner's shot is blocked! Then James fires wide.
Ziyech drives forward and fires for goal from the edge of the box. Straight down the throat of de Gea, who holds on.
James fires for goal from outside the box, but his effort goes well over.
On comes Lukaku in place of Werner to face his former club.
Loftus-Cheek meets a Chelsea corner. It's a real opportunity, but he heads over the target.
James' cross only just evades Lukaku, lurking in the danger area.
Mendy astonishingly gives the ball away. Fred has Lingard in support, but looks to chip Mendy. It backfires and the 'keeper holds on.
Fernandes makes way with van de Beek on in his place.
McTominay took a ball to the face and receives medical attention. He has worn his heart on his sleeve today.
We head into five minutes of stoppage time. There is time yet for a winner either side, though Tuchel appears to want even more time!
Ronaldo looks to break free. He was offside but it was missed. Thiago Silva blocks and it's turned behind for a corner.
Tuchel picks up a yellow card for his protests on the sideline over that offside decision -- perhaps an accumulation of offences against his name.
Jorginho picks up a yellow card for a foul in midfield.
CHANCE! Pulisic crosses for Rudiger at the far post. Glorious opportunity, but the Germany centre-back blazes off target!
FULL-TIME: CHELSEA 1-1 MANCHESTER UNITED. Jorginho gave away the ball for Jadon Sancho to score the opener against the run of play, but the Italy midfielder atoned from the penalty spot. The spoils are shared at Stamford Bridge. Chelsea stay top of the table, but they will feel this is two points dropped.