Cedric's cross isn't properly cleared by Gannon and Tierney's shot is deflected behind. Elneny has a pop from range as the ball is half-cleared again, but he mis-hits it and it goes well wide.
87'
Gartland yanks Willock's shirt as he bursts into the area but the referee doesn't spot it and the Arsenal man runs the ball out for a goal kick.
85'
Nelson drives infield from the left and aims a powerful right-footed effort toward the far top corner, but it flies just wide.
84'
Tierney floats in a cross towards Willian at the far post. Colovic opts not to take a chance and puts it behind.
82'
Cedric crosses from the right, Gartland nods it clear.
80'
Nelson tees up Tierney at the left corner of the area and he goes for goal with his left foot, but he shanks his effort over the bar.
79'
Dundalk are playing a bit of keep-ball now, eager to run the clock down. Arsenal, to their credit, are still pressing and getting forward.
77'
Into the final 15 minutes now. Dundalk will be happy if it stays at 3-0.
Minute
Description
75'
Hoban goes for goal from a free-kick, a long way out. It floats harmlessly over the crossbar.
74'
F. Balogun enters the game and replaces E. Nketiah.
K. Tierney enters the game and replaces G. Xhaka.
More changes in the offing. Tierney comes on for Xhaka.
The 19-year-old Balogun gets a chance, though you suspect he might have liked more than 15 minutes to show what he can do with the game won long ago. Nketiah goes off. Debut goal incoming?
73'
Willock tees up Nketiah at the left side of the area, but he leans back and hits his first-time effort way over the crossbar.
72'
Hoare makes a really good sliding challenge on Nelson at the edge of the area as he looks to latch onto Cedric's threaded pass in behind.
71'
Rogers beats away Maitland-Niles' powerful effort from the edge of the area.
70'
S. Čolović enters the game and replaces M. Duffy.
Another Dundalk sub. Colovic comes on for Duffy.
68'
Cedric crosses from the right and Nketiah looks to hook it in at the edge of the six-yard box, but he can't get a telling touch as Rogers comes out to paw it away.
67'
Willock bursts through two defenders in the penalty area and looks to poke the ball home, but Gartland gets an important block in to put it behind. The corner is eventually carried clear by Hoban.
66'
Dundalk saw the funny side of Arsenal's double change. Their tweet read: "Arsenal ready to throw a couple of substitutes on for the craic. Dani Ceballos and Willian".
64'
Another Arsenal cross from the right, another simple header away for a Dundalk defender. Do they think they still have Olivier Giroud in there? Kolasinac's header in the first half is the only time an open-play cross has resulted in a shot on target, and they've put plenty of them in.
62'
S. Gannon enters the game and replaces C. Shields.
Willian enters the game and replaces N. Pépé.
It's a double change for Arsenal. Willian comes on for Pepe, scorer of the excellent third goal.
And now another change for the visitors. Shields off, Gannon on.
61'
Dani Ceballos enters the game and replaces S. Mustafi.
Arteta makes his first change as Mustafi heads off to be replaced by Ceballos.
60'
Nelson picks out Elneny with a deep corner from the left, but he's adjudged to have fouled a defender as he headed it goalwards. It was a simple save for Rogers anyway.
59'
Ceballos is being readied on the touchline as well.
57'
This probably isn't what Dundalk wanted to see - Willian is coming on. Just the 70 Brazil caps and two Premier League titles for him. Are Arsenal going to start racking up the goals now?
55'
Nelson teases in a cross from the right but again, nobody attacks it. It floats over to Maitland-Niles who keeps the move alive, but eventually Nketiah bends a left-footed effort well wide from the edge of the area.
53'
J. Flores enters the game and replaces P. McEleney.
S. Hoare enters the game and replaces D. Cleary.
And now a third change for Dundalk. Hoare comes on to replace Cleary.
Flores is finally on, replacing the injured McEleney.
50'
Dundalk will be annoyed to find themselves three goals down. They have been well organised for the most part and found themselves behind after an individual error, one defensive lapse and one absolute stunner.
49'
Duffy lifts in a nice free-kick from deep on the right, but the Dundalk player who meets it can't get a telling touch and Mustafi is able to clear.
46'
G. Sloggett enters the game and replaces S. Murray.
N. Pépé has scored a goal for Arsenal! Assist by J. Willock.
GOAL! Wow, barely 30 seconds into the second half and Pepe makes it 3-0! It's a cracking finish, too. Willock finds him inside the D and he holds the ball up, rolls it onto his right foot and spanks it into the top-right corner.
Willock gets an assist to go with his goal. Just a simple pass.
45' +2
HALF-TIME: ARSENAL 2-0 DUNDALK
45'
Dundalk make a change at the break. Sloggett replaces Murray in midfield.
We're back underway for the second half. No changes from Arsenal.
44'
J. Willock has scored a goal for Arsenal!
GOAL! 2-0 Arsenal, Willock smashes in and that could be game over in a flash. Dundalk leave some space in behind for the first time and are punished. Nketiah feeds Pepe and his shot deflects straight into the path of Willock, who lifts a right-footed effort into the roof of the net from the left side of the area.
43'
The goal had been coming. Arsenal hadn't had a lot of chances but the majority of the play for the last 10 minutes or so has been around the Dundalk penalty area.
42'
E. Nketiah has scored a goal for Arsenal!
GOAL! Arsenal lead 1-0, Nketiah with the opening! It's a bad moment for goalkeeper Rogers who comes out to punch a corner clear and barely touches the ball. It drops to Nketiah, who smashes it in from close range.
40'
Elneny runs onto a loose ball at the edge of the area and hits it first time, but Duffy gets across to press him and either puts him off or gets a slight touch on the ball. It flies well over the crossbar, and the referee gives a goal kick.
36'
Nelson swings in another cross from the left, but Pepe can't stretch enough to keep it in play.
33'
Cedric bends in a cross from deep on the right, looking to pick out Nketiah on the penalty spot. It's accurate enough but headed away easily enough. Arsenal seem keen to get crosses into the area but rarely have they had somebody on the end of one.
32'
Dundalk win a corner on the left but for the second time, Runarsson comes out to make a simple catch.
31'
Pepe jinks into the area and a defender gets a touch to the ball, but can only knock it on to Nketiah. It looks like an opportunity to shoot but he tries to do too much and is closed down.
30'
Dummigan gets a good foot in near the corner flag to prevent Pepe getting away from him again. The Dundalk defenders are sticking to their task well so far.
29'
Nelson lifts a ball in behind for Nketiah to latch onto in the area, but the flag goes up. That looked tight.
26'
Dundalk put together a rare attack after Pepe loses the ball at the edge of the area, but in the end Mountney puts a cross out for a goal kick from near the right touchline.
24'
Elneny performs a swift drag-back to hold onto possession under pressure inside the area. He lays it back to Nelson at the edge and the winger hits it first time with his right foot, but it flies wide of the left post.
23'
Kolasinac crosses from the left. Pepe rises to meet it in a central position about eight yards out, but his header loops onto the roof of the net.
21'
The corner is taken short to give Pepe room to cross, but Murray has an easy job to head it clear. The loose ball breaks for Nelson to shoot, but it's blocked and cleared too.
20'
Kolasinac barrels his way into the area from the left, spinning past Mountney but running into a crowd of defenders. It's hacked behind for a corner.
18'
Willock fizzes in a really good first-time cross from inside the penalty area. He slides the ball from right to left, across the face of goal, but nobody makes a run to turn it in.
17'
Nelson gets away from his man at the edge of the area but his shot is blocked. Elneny fouls Murray to prevent a counter-attack.
16'
Dundalk manager Giovagnoli isn't allowed on the touchline tonight as he doesn't have the right pro qualifications. Coach Shane Keegan is there in his absence.
15'
Pepe fires a corner from the right straight into the side netting. Nelson drifts a cross from the left straight out for a goal kick. Not a lot of quality so far.
14'
Goalkeeper Rogers is forced to pass the ball straight out of play as he's pressed by two Arsenal forwards. It's backs to the wall for Dundalk at the moment.
13'
Pepe drifts onto his left foot from the right wing and looks to tease in a cross for Nketiah at the far post, but Gartland hooks it clear. Soon after, Pepe gets the ball in a similar position and goes for goal, but his shot drifts over.
11'
A loose ball bounces up for Cedric at the edge of the area, but he has to go with his left foot and he slices his half-volley well over the crossbar.
9'
It has been a low-key affair so far. Arsenal are seeing lots of the ball as you would expect.
7'
Pepe picks out Nketiah with a good cross to his feet from the right. He controls the ball and goes down as he's tackled by Gartland, but referee Filip Glova isn't interested in his penalty claim.
5'
Runarsson makes a comfortable catch from the resulting corner. Arsenal look to counter but Maitland-Niles is stopped by Shields as he looks to find room for a cross from the left.
4'
McEleney tries his luck from range after Shields and Duffy combine to launch a counter-attack. It's a good 30 yards out but he hits it well and draws a decent save from Runarsson at the bottom-left corner.
2'
Maitland-Niles makes an early burst forward and spreads the ball wide to Saka on the left, but he's well tackled by Mountney.
1'
We're off!
Hello and welcome to our live coverage of this Europa League fixture, as Arsenal welcome Dundalk to the Emirates Stadium in Group B.
Mikel Arteta’s Gunners are top of the group after one game, after they came from behind to beat Rapid Vienna 2-1 last time out. Filippo Giovagnoli’s Dundalk side are third after losing at home to Molde by the same scoreline.
ARSENAL (4-3-3): Runar Alex Runarsson; Ainsley Maitland-Niles, Sead Kolasinac, Shkodran Mustafi, Cedric Soares; Granit Xhaka, Mohamed Elneny, Joe Willock; Nicolas Pepe, Eddie Nketiah, Reiss Nelson.
SUBS: Bernd Leno, Hector Bellerin, Alexandre Lacazette, Dani Ceballos, Kieran Tierney, Pierre-Emerick Aubameyang, Gabriel Magalhaes, Thomas Partey, Bukayo Saka, Folarin Balogun, Willian, Karl Hein.
DUNDALK (3-5-2): Gary Rogers; Daniel Cleary, Andrew Boyle, Brian Gartland; Cameron Dummigan, Patrick McEleney, Chris Shields, Sean Murray, John Mountney; Michael Duffy, Patrick Hoban.
SUBS: Aaron McCarey, James Corcoran, Gregory Sloggett, Sean Hoare, Stefan Colovic, David McMillan, Nathan Oduwa, Sean Gannon, Daniel Kelly, Jordan Flores, Darragh Leahy.
The teams are on their way out onto the pitch, and we're almost ready for kick-off.
Arteta may well be tempted to give one of the youngsters such as Balogun a run-out in the second half. It is a shame William Saliba won't get any minutes, as he isn't in Arsenal's Europa League squad.
Arsenal will stay top of Group B on goal difference, with Molde beating Rapid Vienna 1-0 in the other match tonight. The Gunners play Molde at the Emirates next Thursday as Dundalk travel to Vienna.
That's it from me here tonight. Until the next time, goodbye!
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