That's the end of the game! Arsenal definitely improved in the second half and probably just about deserved a goal, but the efforts of Ribeiro in the Sporting goal will make him in particular feel very hard done by.
94'
Battaglia is also in the book, it seems for protesting too much.
GOAL!!!! Arsenal finally break the deadlock through danny Wllbeck, who capitalises on a terrible touch from Coates, and fires the ball low under Ribeiro to take the lead.
71'
Jovane comes on for Gudelj.
70'
Coates in to the book after cleaning out Aubameyang.
Goal disallowed
67'
GOAL DISALLOWED! Danny Welbeck has the ball in the back of the net after a good header, but he's judged to have fouled the defender while jumping to get to the ball.
65'
Welbeck goes down in the box after a swift counter-attack, but the referee isn't having it.
62'
Guendouzi hits a weak shot from range, and his delfected shot ends up safely in the keepers hands.
Wild shot from Lichtsteiner from range, nowehere near troubling the keeper.
53'
Really good work from Guendouzi down the left, but his cross isn't converted by Welbeck who sees his shot blocked.
49'
Aubameyang has another chance and tries to chip the keeper, but he does really well again to save it.
48'
Aubameyang has a good chance to take the lead, but his shot is too close to Ribeiro.
46'
Sporting start the second half.
45'
That's the end of the first period. You'd have to say Arsenal have had the better chances, and look dangerous on the counter, but Sporting have also had some opportunities. Both sides need to improve their finishing in the second period.
45'
One added minute.
42'
Ristovski has pulled up with a hamstring issue, it's unclear whether he'll be able to carry on.
38'
Acuna is booked for a careless challenge on Lichtsteiner.
36'
Aubameyang earns a free-kick, and the fires the resulting set-piece just wide of the post.
31'
After some clumsy playing out from the back from arsenal, the ball falls to Nani who smashes it from 25 yards, but the ball won't come down soon enough to go in to the net.
26'
Mkhitaryan is in acres of space on the right again, but his cross is once more cleared by Sporting's back line.
23'
Mkhitaryan fires in the resulting free-kick, and it's beaten away by Ribeiro.
22'
Elneny brought down right on the edge of the box by Coates.
20'
Mkhitaryan drives a ball in to the box from the right, but it's well defended by Coates.
17'
Fernandes tries to get another shot away, but seems to catch Lichtsteiner with his foot as he does it.
15'
Fernandes has the first shot on goal of the game from distance, but it's nowhere near testing Leno.
10'
It's arsenal's turn, through Xhaka, to give away a needless foul.
6'
Ristovski relieves all the pressure Sporting had created on the Arsenal back line by giving away a cheap foul.
1'
Arsenal get the game under way.
Start of match
PRVW
Arsenal will hope they have more luck tonight than Alex Iwobi did in the warm up. Ouch!