Rapid XI: Strebinger, Stojkovic, Hofmann, Barac, Arase, Ljubicic, Grahovac, Ullmann, Kara, Ritzmaier, Fountas.
Subs: Unger, Gartler, Sonnleitner, Schick, Petrovic, Alar, Knasmullner, Greiml, Kitagawa, Sulzbacher, Ibrahimomoglu, Savic.
Thomas Partey makes his full debut. Shkodran Mustafi returns from injury to feature on the bench. Rob Holding and Dani Ceballos miss out through injury.
Arsenal XI: Leno, Luiz, Gabriel, Kolasinac, Cedric, Partey, Elneny, Saka, Pepe, Lacazette, Nketiah.
Subs: Runarsson, Macey, Ballerin, Tierney, Aubameyang, Maitland-Niles, Mustafi, Nelson, Willock, Xhaka.
Hello and welcome to our coverage of tonight's Europa League Group B opener betwen Rapid Wien and Arsenal, live from the Allianz Stadion.
KICK OFF: We're underway in Vienna!
This is Arsenal's first match of the season where spectators are present! Of course, there are no away fans today but the noise that the socially-distances fans are making makes for a nice change!
Cedric isn't taking no for an answer against Kara after the midfielder nutmegs Luiz in the channel, and outmuscles him too as he heads forward. I don't think so, says Cedric, and chops him down. Unsurprisingly, that's a free-kick.
Nketiah uses his pace well down the left to get into space and have time to look up and find Saka inside. His touch lets him down and allows Strebinger to gather the ball.
Chance! Kara finds space on the edge of the box after shaking off Luiz and fires wide of the near post.
Booking: Grahovac is in the book for a late tackle on Pepe, who looked to be breaking forward on a counter for Arsenal.
Save! The free-kick which follows, from 40 yards out on the right, is whipped in towards an unmarked Luiz a fair way wide on the far side. His bouncing header needs turbing behind by Strebinger. Corner.
Chance! From the right wing it's worked to Arase who ghosts in from deep, away from Saka, to find space in the boss.
He cuts it across for Ritzmaier, whose shot is deflected by Luis' desperate sliding block and nearly beats the diving Leno, who gets a hand up to the ball to palm out and then hold.
Gabriel looks forward to Lacazette, who has a challenge to time a run behind Rapid's deep defence but manages to keep the ball in play too. The defence stands strong when Saka launches it into the box, but Arsenal keep the pressure on.
Booking: Lacazette is booked for a foul that prevents a Rapid counter.
Partey reads the play in midfield to tackle Grahovac, before halting Ljubicic when he picks up the loose ball too. There goes the Rapid attack in one fell swoop.
Booking: This ref seems to be trigger happy with the cards tonight. Partey goes into the book for a flailing arm while he had the ball. Purely accidental and never a yellow.
Booking: Another! This one the worst of the lot from the ref, who is having a terrible night. It's Nketiah who gets his name taken for shooting milliseconds after the whistle had gone for offside.
Chance! Arase gets the better of Saka on the right and all of a sudden, Arsenal look in trouble. A cross is half-cleared by Gabriel's header but falls for Arase again, whose shot is blocked.
Chance! Kara takes a low cross superbly with his first touch to spin past Luiz, before whipping a cross-cum-shot towards the back post and a couple of yards wide. That take is terrific and that's a warning sign for Arsenal.
Three minutes added on.
SECOND HALF: We're back underway!
It's not been the ideal start to the half for Stojkovic, who takes one in the face from Nketiah, purely accidentally, and needs treatment. No punishment for the Arsenal forward, which is a tad lucky.
HALF TIME: No goals to report on and neither keeper has had too much to do. Luiz came closest for Arsenal but his header forced a comfortable save.
Rapid have started the second half how they finished the first, with Ljubicic firing over from 25 yards when given time to run by the Arsenal midfield.
Oh this is awful from Arsenal, and especially Leno. He goes short to Luiz on the byline, back to the Arsenal goalkeeper, who hits the onrushing Kara with a hurried attempt at another return. That tees up Fountas nicely to squeeze the loose ball between the goalkeeper and the near post to give the hosts the lead.
Cedric gets into a crossing position before turning back and warming Strebinger's palms with a poorly aimed low ball. He's had a quieter night than he must have been expecting.
This is better from Arsenal, who mount a first spell of pressure in some while to keep Rapid Vienna penned in. Saka's cross is cleared away by Barac, but the visitors keep hold of the ball and will go again.
Booking: Arase goes into the book for a foul on Nketiah, who is about to come off.
Substitution: Double change for Arsenal. Bellerin and Aubameyang are on for Soares and Nketiah.
Booking: Kara is booked for a late challenge on Gabriel.
Chance wasted. Arsenal win a free-kick in a promising position. But Aubameyang blasts it over.
GOAL! From the free-kick! It's whipped in by Pepe and Luiz gets a looping head to it and it goes in!
Booking: Ritzmaier now goes into the midfielder out on the right flank - another foul which didn't need to be made - and is booked.
Let off for Arsenal! It's another howler from Leno and nearly costs Arsenal again. He comes out of his box and attempts to clear but instead hits the ball against Luiz and it falls for Fountas but he fails to hit the target form range.
GOAL! Masterstroke from Arteta! The two substitutes combine to complete a rapid turnaround just four minutes after pulling level. Elneny's lovely ball to Bellerin, who has just timed his run to stay onside, puts the defender away in the box where he just has to pick out the right pass for Aubemayang who taps in.
Substitution: Kara is off with Kitagawa coming on in his place.
Substitution: And another change for the hosts. Arase is off, with Schick coming off the bench for him.
Poor from Lacazette. Lacazette brings the ball down just outside the Rapid Vienna area, but after Barac takes the ball off his toe, Pepe picks it up and bends a shot a couple of yards over the bar.
Substitution: Double change for the Gunners. Tierney and Willock come on for Saka and Lacazette.
Pepe and Willock combine nicely down the right with the latter given space to run in the Rapid box. As he looks to find Aubameyang on the far side for another tap-in, his cross is turned behind for a corner.
Substitution: Knasmullner comes on for Ritzmaier.
There will be four minutes of stoppage time.
Booking: Leno receives a yellow card for time wasting.
A late change for the Gunners, if only to waste some seconds. Nicolas Pepe is off for Reiss Nelson.
FULL TIME: They did it the hard way and it wasn't pretty, but Arsenal take all three points away with them following a much, much improved 2nd half. Bellerin and Luiz with the goals for the Gunners. It finishes 2-1 in Vienna.