West Ham United saw their passage to the knockout stages of the UEFA Europa League halted against Genk who forced a 2-2 draw on Thursday evening.
Ghanaian Joseph Paintsil provided Genk a dream start before a double from Said Benrahma turned the tie around only for Tomas Soucek's own-goal to hand the host a point in Group H.
Olympique Lyon endured no issues as that of the Hammers after a 3-0 victory at home to Sparta Prague in Group A led to knockout round qualification.
The first half finished goalless, and a brace thereafter from Islam Slimani followed on Karl Toko Ekambi's strike to complete the victory and four wins from four matches too.
The night's other match in Group A pitted Brondby against Glasgow Rangers and the two cancelled out one another through a 1-1 draw.
An own-goal from Nigerian international Leon Balogun ahead of halftime put the Danes in the lead, but Ianis Hagi came good for the Scottish champions.
Napoli continued their impressive start to the season on all fronts as a 4-1 victory at Legia Warsaw saw them edge closer to the last 32.
Piotr Zielinski's early penalty was cancelled out by Mahir Emreli before another spot-kick from this time Dries Mertens restored parity only for Hirving Lozano and Adam Ounas to add to the equation.
Olympique Marseille carried on without a win in Group E this as Lazio arrived at the Stade Velodrome to conjure up a 2-2 draw.
A penalty from Arkadiusz Milik set the host on course, but their likelihood of victory fell apart as Felipe Anderson equalised before Ciro Immobile netted a landmark goal for the club.
Marseille refused to throw in the towel and bagged the equaliser in the final eight minutes through former West Ham United man Dimitri Payet.
Zambian Patson Daka started following his heroic display in Moscow a fortnight ago as Leciester City and Spartak Moscow played to a 1-1 draw.
Former Chelsea man Victor Moses grabbed the lead earlier on only for Daniel Amartey level it up whilst substitute Jamie Vardy missed a penalty.
Bayer Leverkusen strayed towards second spot in Group G more over after they edged Real Betis 4-0 at the BayArena.
A goal each half from Moussa Diaby were what the doctor ordered for Leverkusen, who snatched a third late on through Florian Wirtz and allowed Nadiem Amiri to add a fourth.
Dismissals each side at the end saw Leverkusen's Kerem Demirbay red carded and Nabil Fekir on the path of Betis made to walk the plank.
Dinamo Zagreb 3-1 Rapid Wien
Ferencvaros 2-3 Celtic
Antwerp 0-3 Fenerbahce
Monaco 0-0 PSV Eindhoven
Real Sociedad 1-1 SK Strum Graz
Galatasaray 1-1 Lokomotiv Moscow
Olympiacos 1-2 Eintracht Frankfurt
Braga 4-2 Ludogorets