Theo Walcott scored a brace of goals as Arsenal beat Basel 2-0 to pick up their first win in this season’s Champions League.
Walcott’s 7th and 26th minute goals went unanswered in the second round of matches of Group A at the Emirates.
After drawing their opening game the Gunners are now on four points – level with Paris Saint Germain who downed Ludogorets 3-1 courtesy of two goals from Edison Cavani and one from Blaise Matuidi.
Napoli meanwhile continued their perfect start to Group B.
The Italian club defeated Benfica 4-2 at the Stadio San Paolo.
Two goals from Dries Mertens and one a piece from Marek Hamsik and Arkadiusz Milik were enough to seal the win for Napoli, who are now run away leaders of the group.
They are on a perfect six points, four points clear of second placed Besiktas, who were held to a 1 – 1 on home turf by Dynamo Kyiv.
Barcelona maintained their 100 per cent start to Group C.
The five-times European champions came from a goal down to beat Borussia Moenchengladbach.
Arda Turan and Gerard Pique scored two second half goals for the Catalan giants after Thorgan Hazard netted the opener for the German side.
Pep Guardiola’s perfect record with Manchester City came to an end after the Premier League leaders came from behind three times to earn a thrilling 3-3 draw with Scottish champions Celtic.
Bayern Munich’s winning start to the season under new coach Carlo Ancelotti ended when Jannick Carrasco’s first-half goal gave Atletico Madrid a 1-0 home victory in their Group D encounter.
Bayern were aiming to make it nine wins in a row in all competitions but Diego Simeone’s men had other ideas.
Atleti top the group on six points three clear of Bayern and five clear of both FC Rostov and PSV Eindhoven who drew two all in their tie in Russia.