A late equaliser denied Arsenal victory in their Europa League clash against Vitoria Guimaraes in Portugal.
Shkodran Mustafi's second-half header looked enough for the Gunners to secure three points but the hosts scored in injury time to snatch a 1-1 draw.
Arsenal remain top of Group F, but will have to wait to secure their place in the next round of the competition.
Manchester United, Porto, Lazio, Roma, Celtic, Sevilla, Rangers and PSV are some of the teams that will be playing on Thursday.
Zverev passes Van de Zandschulp test to reach US Open semis
Alexander Zverev has taken another big step towards a second Grand Slam title by beating Dutchman Botic van de Zandschulp 6-2 7-5 6-1 to reach the US Open semi-finals, where the German will take on Karen Khachanov.
Gauff fights back to beat Andreeva and reach US Open semis
American Coco Gauff has saved two match points to beat Russian fifth seed Mirra Andreeva 2-6 7-6(7) 6-2 on Wednesday and reach the US Open semi-finals after recovering from a dreadful opening set.
PSG defeat Slovan Bratislava, Arsenal win late at Napoli
New signing Ferran Torres has struck a hat-trick as holders Paris St Germain made an emphatic start to the defence of their Champions League crown with a 6-1 home victory over Slovan Bratislava on Wednesday.
Khachanov back to US Open semi-finals as Blockx retires
Karen Khachanov has advanced to the US Open semi-finals on Wednesday when Alexander Blockx retired trailing 6-2 7-5 3-2, as the Russian reached the final-four stage in Flushing Meadows for the first time since 2022.
Rybakina beats qualifier Zheng to reach US Open semis
Second seed Elena Rybakina ended Chinese qualifier Zheng Qinwen's stirring US Open run with a 3-6 6-1 6-4 victory on Wednesday, advancing to the semi-finals and securing the world number one ranking for the first time.
