Martinelli double makes it four goals in two Arsenal starts
Willock and Ceballos extend Gunners' lead
Man Utd held to a draw at Alkmaar
Boly's close range gives Wolves win at Besiktas
Celtic beat Cluj after Rangers lose to Young Boys
Arsenal 4-0 Standard Liege
4-0 up and send on one of the best strikers in the world.
Pierre-Emerick Aubameyang on for the highly impressive Reiss Nelson with 11 minutes to go.
Image source, Getty ImagesArsenal 4-0 Standard Liege
Arsenal looking for a five-star showing.
Reiss Nelson would have got the man of the match today were it not for Gabriel Martinelli.
The Englishman darts and picks out Dani Ceballos, whose shot is blocked, as is Lucas Torreira's follow-up.
Arsenal 4-0 Standard Liege
Change for Arsenal.
Joe Willock makes way for Matteo Guendouzi.
Arsenal 4-0 Standard Liege
Paul-Jose M'Poku works a yard on the edge of the box, blocked.
Lazio have equalised against Rennes in Celtic's group.
Serbian midfielder Sergej Milinkovic-Savic, who has been linked with Manchester United numerous times in the last 18 months, has pulled the Italian side level less than 10 minutes after being introduced as a substitute.
He is, of course, the brother of Standard Liege goalkeeper Vanja.
It's still 1-0 to Eintracht Frankfurt against Vitoria Guimaraes in the other game in Arsenal's group.
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Daniel Cheng: Arsenal should play this Europa League side in the Prem and see how we fare!
Paul: Kieran Tierney has been brilliant tonight. His delivery is always first class. He's going to prove to be an absolute gem of a signing.
Arsenal 4-0 Standard Leige
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Arsenal 4-0 Standard Liege
4-0 up and you send on your club record £72m signing.
Nicolas Pepe enters the action for Ainsley Maitland-Niles.
Arsenal 4-0 Standard Liege
Hat-trick....STILL NO!
The impressive Reiss Nelson curls in a cross into the box for Gabriel Martinelli, who flicks it on but Vanja Milinkovic-Savic can get across to push it away.
Excellent save.
It's finally half-time in the Dudelange v Qarabag game and the visitors have extended their lead to 3-0 with a Richard Almeida de Oliveira penalty.
Rennes have taken the lead away at Lazio in Celtic's group while Neil Lennon's side have just doubled their lead against Cluj through Southampton-loanee Mohamed Elyounoussi. You can follow that game here.
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Phil Blundell: Tells you how far away United are when OGS is clinging that their lack of a win is down to a penalty shout! Whether it was or not United should be beating AZ Alkmaar any day of the week!
Richard Browne: Ole sounds absolutely desperate. Hanging your hat on a penalty not given is one step away from boardroom backing.
Arsenal 4-0 Standard Liege
Emiliano Martinez has looked shaky at times but his shot-stopping has been excellent.
Liege skipper Paul-Jose M'Poku finds space at the back post, but his rising drive is palmed to safety by the Arsenal goalkeeper.
Arsenal 4-0 Standard Liege
Dani Ceballos has scored his first Arsenal goal on his 10th appearance for the club.
Image source, Getty Images
Dani Ceballos (56 mins)
And it's four.
Gabriel Martinelli has not scored this one, but he does make it.
The Brazilian darts away from Kostas Laifis and coolly lifts the ball over the Liege goalkeeper for Dani Ceballos to tap in his first Arsenal goal from a yard out.
Easy peasy.
Image source, Getty ImagesArsenal 3-0 Standard Liege
The hat-trick is just not happening for Gabriel Martinelli.
The young Brazilian darts to the front then peels off to the back post and is picked out perfectly by Reiss Nelson, but the two-goal striker pokes his shot wide on the stretch.
Image source, ReutersAfter the earlier drone incident the Group A game between Dudelange and Qarabag is back under way with the Azerbaijani champions leading 2-0.
The delay of over 15 minutes means there's still about 10 minutes till half-time in that one.
Arsenal 3-0 Standard Liege
This is a player.
Gabriel Martinelli hunting the hat-trick gets a ball from Dani Ceballos 25 yards out.
His first and only aim is to look for the goal, turning and bending a strike narrowly wide.
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Can this Arsenal side play on Sunday?
Rob, Crowthorne
In today's transfer climate, Martinelli for £6m is absolutely fantastic business.
Connor, London
Arsenal 3-0 Standard Liege
Away we go for the second half.
Image source, Getty ImagesThe Group A game between F91 Dudelange and FK Qarabag has been suspended with the Azerbaijani champions leading 2-0 up.
A drone with a flag attached has been flown over the pitch causing the Qarabag players to be outraged - with one picking up the ball and attempting to kick it at the drone.
Image source, Reuters