Eight fixtures of Matchday 4 of the 2016/17 UEFA Champions League took place on Tuesday night.
Arsenal and Manchester City flew the flag for the Premier League with come-from-behind wins over Ludogorets Razgrad and Barcelona respectively.
In Group A, Arsene Wenger's Gunners came from two goals down to beat the Bulgarian side 3-2 in Sofia to advance to the Round of 16 for the 17th successive season.
Jonathan Cafu and Claudiu Keseru shocked the visitors by scoring inside 15 minutes but the Gunners rallied through Granit Xhaka and Olivier Giroud before half-time.
With 87 minutes on the clock, Mesut Ozil came up with a fabulous individual goal to keep the North London club on top of the table where they sit alongside PSG on 10 points from four matches.
The French champions have joined Arsenal in the next phase of the competition after they required a last-minute winner from Thomas Meunier to edge ten-man FC Basel 2-1 after Luca Zuffi had cancelled out Blaise Matuidi's first-half opener.
Group B saw Napoli hold Besiktas to a 1-1 draw in Istanbul as Marek Hamsik equalised after Ricardo Quaresma's 78th-minute penalty.
The result has Napoli sitting on top of the table on seven points, one clear of Besiktas, and equal with Benfica who defeated Dynamo Kyiv 1-0 in Lisbon courtesy of Eduardo Salvio's penalty in stoppage time of the first half.
In Group C, Man City produced a stunning comeback to defeat Barcelona 3-1 at the Etihad Stadium and put themselves in with a chance of clinching top spot.
Lionel Messi netted his 90th Champions League goal in the 21st minute after a scything move and pass from Neymar but City drew level late in the first half when Ilkay Gundogan finished off a good passing move from the home team.
Kevin De Bruyne then fired City ahead early in the second half with a stunning free-kick before Gundogan finished off Barca in the 74th minute with his fourth goal in his past two outings.
Barcelona sit atop the group with nine points, two ahead of City, who are three further clear of Borussia Monchengladbach with two fixtures left.
Gladbach were lucky to escape with a 1-1 draw at home to Celtic who responded from conceding to Lars Stindl's first-half strike with a penalty from Moussa Dembele on 76 minutes but remain at the foot of the standings on two points.
And in Group D, Antoine Griezmann scored a double - including a world-class flick-on volley - to give Atletico Madrid a last-gasp 2-1 victory over plucky Russian outfit FK Rostov.
The goals saw the Frenchman move into Atletico's all-time top 10 European scorers.
Another man who added to his formidable scoring record in Europe was Robert Lewandowski who now has 36 goals in 57 games in the Champions League with a brace as Bayern Munich overcame PSV 2-1 in Eindhoven to progress to the next stage alongside Atleti.
The second lot of Matchday 4 fixtures takes place open Wednesday night, including Tottenham Hotspur's home clash with Bayer Leverkusen, reigning champion Real Madrid's trip to Legia Warsaw and Olympique Lyon's visit to Juventus.
2016/17 UEFA Champions League - group stage scores
Group A
Ludogorets Razgrad (BUL): 2 (Jonathan Cafu 12', Claudiu Keseru 15')
Arsenal (ENG): 3 (Granit Xhaka 20', Olivier Giroud 41', Mesut Ozil 87')
Vasil Levski National Stadium, Sofia, Bulgaria - 30,862
FC Basel (SUI): 1 (Luca Zuffi 86', red card: Serey Die 84')
PSG (FRA): 2 (Blaise Matuidi 43', Thomas Meunier 90')
St Jakob-Park, Basel, Switzerland - 34,639
Group B
Besiktas (TUR): 1 (Ricardo Quaresma (PEN) 78')
Napoli (ITA): 1 (Marek Hamsik 82')
Vodafone Arena, Istanbul, Turkey - 35,552
Benfica (POR): 1 (Eduardo Salvio (PEN) 45+2')
Dynamo Kyiv (UKR): 0
Estadio da Luz, Lisbon, Portugal - 51,641
Group C
Borussia Mönchengladbach (GER): 1 (Lars Stindl 32')
Celtic (SCO): 1 (Moussa Dembele (PEN) 76')
Borussia-Park, Mönchengladbach, Germany - 46,283
Manchester City (ENG): 3 (Ilkay Gundogan 39'/75', Kevin De Bruyne 51')
Barcelona (ESP): 1 (Lionel Messi 21')
Etihad Stadium, Manchester, England - 53,340
Group D
Atletico Madrid (ESP): 2 (Antoine Griezmann 28'/90+3')
FK Rostov (RUS): 1 (Sardar Azmoun 30')
Vicente Calderon, Madrid, Spain - 40,392
PSV Eindhoven (NED): 1 (Santiago Arias 14')
Bayern Munich (GER): 2 (Robert Lewandowski (PEN) 34'/73')
Philips Stadion, Eindhoven, Holland - 35,000
