Chelsea vs Arsenal LIVE SCORE: Gabriel Martinelli FIRES Gunners into lead to break deadlock in tense derby – updates

Chelsea 1-1 Arsenal

84. After a Jackson effort is routinely stopped by Raya, Arsenal look to progress forward.

A free-kick is won, and is eventually curled dangerously into the Chelsea area, where the linesman's flag comes to the home side's rescue.

Chelsea 1-1 Arsenal

82. Bukayo Saka limps out of the action, and is replaced by Gabriel Jesus.

Meanwhile, Chelsea have introduced Reece James, on in place of Malo Gusto at right-back.

Chelsea 1-1 Arsenal

80. Ten to go at Stamford Bridge.

Have both sides settled for a hard-earned point, or is there the opportunity still for one to grab the win that will lift them up to third in the table?

Chelsea 1-1 Arsenal

78. Cucurella wipes out Saka on the far touchline, and that will earn the Chelsea left-back a yellow card.

More worrying, however, is the realisation that Arsenal's England international has stayed down.

He eventually rises to his feet with the Arsenal medical team in attendance, but is moving very gingerly, and it appears that he will play no further part.

Chelsea 1-1 Arsenal

76. Clean through, Nicolas Jackson cooly slots beyond David Raya.

But don't get too excited, the striker was clearly three yards offside when played in on goal.

From Andy Dillon at Stamford Bridge

Noni Madueke doesn't appear to like being subbed.

The England winger has stomped straight down the tunnel after being taken off for Mykahilo Mudryk. Maybe he is carrying a knock and needs instant attention

Chelsea 1-1 Arsenal

74. Merino nearly makes an instant impact by nudging Saka's teasing cross into the net with his first touch.

Unfortunately for the Spaniard, he actually fails to make contact with the cross and the chance goes begging.

Chelsea 1-1 Arsenal

72. Mikel Arteta responds to the Chelsea goal by making a double change.

Goalscoring Gabriel Martinelli and the returning Declan Rice are withdrawn to make room for Leandro Trossard and Mikel Merino.

Chelsea 0-1 Arsenal

67. Romeo Lavia has run into problems and doesn't look able to continue.

Sure enough, the Belgian is replaced by Enzo Fernandez, while the shaven-headed Mykhailo Mudryk is on for Noni Madueke.

Chelsea 0-1 Arsenal

65. Timber lets fly with a low effort from 25 yards that thumps into the advertising hoardings to the left of Sanchez's goal.

It was neat footwork from the Dutchman to make space for shot, and he continues to grow into this Arsenal team after that long period out with injury.

Chelsea 0-1 Arsenal

63. Arsenal are fired up now, and are pouring forward at every opportunity in search of a second.

Saka sends a series of deliveries into the box, but Chelsea just about hold firm - for now.

Chelsea 0-0 Arsenal

57. Havertz has been patched up and is back on, but the focus from the Arsenal fans remain on the referee.

"Michael Oliver, it's all about you!" come the chants from the away section.

Chelsea 0-0 Arsenal

55. Blood is pouring from Havertz's head, but the German is refusing to leave the field despite being directed to the touchline by Michael Oliver.

Eventually, the German's stubbornness leads to him getting a yellow card, literally adding insult to injury.

As for the cut itself, it seems to be a reopening of the head wound Havertz suffered in midweek against Inter Milan.

Chelsea 0-0 Arsenal

53. Chelsea are ramping up the pressure.

Fofana goes close after being picked out by Madueke.

Moments later, Lavia opens up space for Gusto, and it requires some desperate Arsenal defending to deny the right-back.

Chelsea 0-0 Arsenal

51. Martinelli is on the run after being picked out by a crisp Saliba pass.

This time he takes matters into his own hands, cutting inside and making room for a shot.

It's a strike that is expertly blocked by the tenacious Fofana.

Chelsea 0-0 Arsenal

50. Up the other end, a delightful Martinelli cross evades four Arsenal players in the box, including White, who was the last to arrive at the back stick.

Martinelli looks to the heavens. White looks to the 24-hour tanning salon.

Chelsea 0-0 Arsenal

48. The home fans are up for it now as their team attack the Matthew Harding Stand.

Madueke makes short work of Timber and Martinelli by skipping inside off the right wing, but then lets himself down by slicing a shot wildly out of play.

Kick-off - Chelsea 0-0 Arsenal

46. Back at it at the Bridge! There are no changes to report as the second half gets underway.

This is a London derby there to be won. It is waiting for someone to take it by the scruff of the neck and make themselves a hero.

From Andy Dillon at Stamford Bridge

Chelsea are publicising their 'Wrap Up Warm' campaign on behalf of their foundation supporting homelessness charities in London.

Marc Cucurella really should whip those gloves off and donate. 

Ok, he is Spanish but it isn't that cold today, crikey. He's playing well though up against Bakayo Saka.

First half facts and figures

Arsenal have now failed to score in the first half of five of their last six games against Chelsea in the Premier League.

Half-time - Chelsea 0-0 Arsenal

It's goalless at the break in what has been a scrappy affair.

Both sides have had their spells, but the only real event of note was when Kai Havertz had the ball in the net against his former club - only for VAR to cut the celebrations short with news of an offside.