Alexis Sanchez’s fine strike helped Arsenal to a 3-1 win over Cologne in Thursday night’s Europa League Group H tie, after the match was delayed by an hour for crowd safety reasons.
The match was postponed until 9.05pm with many home fans unable to enter the turnstiles due to thousands of gathering Cologne fans outside the stadium.
Everton produced a dreadful performance as they lost their Europa League opener against Atalanta in Italy.
Andrea Masiello, Alejandro Gomez and Bryan Cristante were the goalscorers.
Andre Silva scored a hat-trick as AC Milan began their Europa League campaign by thrashing Austria Vienna.
Silva was signed from Porto for £34m by Milan, who are competing in Europe for the first time in four years.
Real Sociedad were the other big winners in Group L, though, beating Rosenborg 4-0 with two from Diego Llorente and further goals from David Zurutuza and a Jorgen Skjelvik own goal.
Villarreal secured a 3-1 win over Astana.
The Spanish side edged ahead inside the 16th minute through Nicola Sansone, only for Yuriy Logvinenko to equalise in the 68th minute, before Cedric Bakambu and Denis Cheryshev both scored inside two minutes to swing the game back to Villarreal.
Former Manchester City and Liverpool forward Mario Balotelli scored as French side Nice won 5-1 away to Belgium’s Waregem.
Athletic Bilbao were held to a goalless draw by Hertha Berlin in the German city.
Lazio twice came from behind to edge past Vitesse in Arnhem, Marco Parolo cancelling out Tim Matavz’s early strike and after Brian Linssen put the hosts back in front, Ciro Immobile and Alessandro Murgia won it in the last 23 minutes.
Former Chelsea defender Branislav Ivanovic scored as Russian club Zenit St-Petersburg beat Varda 5-0 in Macedonia.
French side Lyon were held 1-1 in Cyprus by Apollon Limassol in the other Group E game.
Former Norwich and Hull striker Dieumerci Mbokani was on the scoresheet for Dynamo Kiev as they defeated Albanian side Skenderbeu 3-1.
Bundesliga side Hoffenheim, beaten by Liverpool in the Champions League play-off round, lost 2-1 at home to Braga.
In Group D, AEK Athens edged Rijeka with a 2-1 victory as Lazaros Christodoulopoulos scored the deciding goal.
Swedish minnows Ostersunds, who beat Galatasaray en route to reaching the group stages, beat Zorya Luhansk in Ukraine 2-0.
Adil Rami scored the only goal as Marseille beat Konyaspor 1-0 in Group I.
Vitoria Guimaraes drew 1-1 with Salzburg, Pedrao’s opener cancelled out by Valon Berisha on the stroke of half time.
Tomas Necid scored for Slavia Prague as they defeated Maccabi Tel-Aviv 1-0.
Slavia Prague 1 – 0 Maccabi Tel Aviv
Villarreal 3 – 1 FC Astana
Dynamo Kyiv 3 – 1 Skenderbeu
Young Boys 1 – 1 Partizan Beograd
Hoffenheim 1 – 2 Braga
Istanbul Basaksehir 0 – 0 Ludogorets Razgrad
Austria Wien 1 – 5 AC Milan
Rijeka 1 – 2 AEK Athens
Apollon Limassol 1 – 1 Lyon
Atalanta 3 – 0 Everton
FC Koebenhavn 0 – 0 Lokomotiv Moscow
Zlin 0 – 0 FC Sheriff
FC FCSB 3 – 0 Viktoria Plzen
Hapoel Beer Sheva 2 – 1 Lugano
FK Crvena Zvezda 1 – 1 BATE Borisov
Arsenal 3 – 1 FC Cologne
Marseille 1 – 0 Konyaspor
Vitoria de Guimaraes 1 – 1 Salzburg
Hertha Berlin 0 – 0 Athletic Bilbao
Zorya 0 – 2 Oestersunds FK
Vitesse 2 – 3 Lazio
Zulte-Waregem 1 – 5 Nice
FK Vardar Skopje 0 – 5 Zenit St. Petersburg
Real Sociedad 4 – 0 Rosenborg