Ostersunds coach Graham Potter, a former defender for Stoke and West Brom in England, made two half-time changes in an attempt to change the flow of the game, but Arsenal all but ended the tie before the hour mark. Mkhitaryan played in Ozil, who jinked his way through and saw his shot burst through the hands of the hapless Keita and bobble into the net. Ostersunds were gifted a chance to at least add a memorable goal to their fairytale run, but after Tesfaldet Tekie was brought down by Hector Bellerin, David Ospina saved Tom Pettersson's injury-time penalty.Convincing win for us ⚽?? Going with a 3-0 lead into the 2nd leg! ??? #YaGunnersYa #UEL @arsenal pic.twitter.com/lgcESEIHAy
— Mesut Özil (@MesutOzil1088) February 15, 2018
The comfortable win means that Arsenal manager Arsene Wenger will be able to rest his key players for the second leg at the Emirates in a week's time. "We did the job well, controlled the ball against a good side," Wenger told BT Sport. "Overall we played a serious game, so job done. They looked very nervous and we took advantage of it."We're in control going into next week's return leg ?#OSTvAFC pic.twitter.com/sF6ICMyf3a
— Arsenal FC (@Arsenal) February 15, 2018
Batshuayi continued his good form with a late brace as Dortmund fought back to beat Atalanta 3-2 at Signal Iduna Park. Dortmund forged ahead on the half-hour mark through Andre Schurrle, but Josip Ilicic's quickfire double after half-time put Atalanta ahead. Dortmund hit back midway through the second period, though, as Batshuayi slammed in his fourth goal in three games for the club since joining on loan from Chelsea in January.Massive thank you to all the @arsenal fans who came out to support us on such a cold night #COYG pic.twitter.com/5wQFBq7AoD
— Héctor Bellerín (@HectorBellerin) February 15, 2018
And the Belgian striker pounced in the first minute of added time to give the two-time runners-up a precious lead in the tie. "The really disappointing thing is we threw away a game that we shouldn't have lost," admitted Atalanta coach Gian Piero Gasperini. "After cradling the dream of winning, we suffered this disappointment in the final minutes. The second leg will not be easy."That man again!
— Goal (@goal) February 15, 2018
Antoher two @mbatshuayi goals for Borussia Dortmund ? pic.twitter.com/3VS6ArtBmB
Elsewhere, Atletico Madrid recovered from falling behind early on at FC Copenhagen to cruise to a 4-1 victory. Saul Niguez, Kevin Gameiro and Antoine Griezmann were all on the scoresheet as Diego Simoene's La Liga title-chasers put one foot into the last 16. Serie A leaders Napoli have it all to do, though, after Germany international Timo Werner's second-half brace led RB Leipzig to a shock 3-1 win in Italy.Michy Batshuayi is LOVING life at Dortmund!
— Football on BT Sport (@btsportfootball) February 15, 2018
Four goals in three games now at his new club...
And this is a screamer ?
? pic.twitter.com/VOH9Sf3krN
Patrick Cutrone and Fabio Borini scored as AC Milan claimed a 3-0 advantage over Ludogorets Razgrad to take back to the San Siro for the return leg. "I'm a bit angry, we could do a lot better. Having fast players they put us in trouble," said a surprisingly disgruntled Milan coach Gennaro Gattuso.⏱ FULL TIME
— Official SSC Napoli (@sscnapoli) February 15, 2018
⚽️ #NapoliLipsia 1-3
?? #UEL ??
? #ForzaNapoliSempre pic.twitter.com/1LECZHJyGf
Mario Balotelli scored twice, but 10-man Nice blew a two-goal lead to lose 3-2 at home to Lokomotiv Moscow as Manuel Fernandes hit a hat-trick, while Valere Germain struck two goals as Marseille cruised past Braga 3-0. A 78th-minute winner from Callum McGregor gave former European champions Celtic victory over Zenit St Petersburg at Parkhead, and Lazio were beaten 1-0 by FCSB in Bucharest. Lyon, semi-finalists last season, impressively saw off Villarreal 3-1 with Nabil Fekir and Memphis Depay both finding the net.It's a convincing win in Razgrad! 0⃣➖3⃣
— AC Milan (@acmilan) February 15, 2018
Let's relive the full match through our photo gallery ??? https://t.co/ACucEoxd9P
Solidi e pratici contro il Ludogorets! 0⃣➖3⃣
Riviviamo la sfida completa con la nostra foto gallery ??? https://t.co/0rmvkNchPS pic.twitter.com/1yu2qPeTbw
⚽️? A wonder goal from @Memphis has @OL 3-1 as they chase the dream of a #UEL final in their own stadium...
— UEFA Europa League (@EuropaLeague) February 15, 2018
How far will Lyon go? ? pic.twitter.com/0Q8v12fffR