Arsenal host Olympiacos on the second matchday of the League Phase of the Champions League on Wednesday night, a match in which the Gunners will seek revenge against the Greek side, who have defeated them in England on their last three visits.
Arsenal return to Champions League action two weeks after the Gunners began their campaign in style with a 2-0 victory over Athletic in their opening match, thanks to goals from Martinelli and Trossard.
The English side host Olympiacos in their second match of the League Phase, a fixture that was previously a walk in the park for the Gunners but has recently turned into a nightmare, with the Londoners suffering three defeats in their last three home games against Greek opposition, all against Olympiacos.
Before this poor run, the Emirates Stadium side had never lost at home to a Greek team, accumulating six wins and two draws until then: three wins and a draw against Panathinaikos, one draw against PAOK and three wins against Olympiacos.
However, luck ran out for Arsenal on a fateful September 29th, 2015, when the Gunners suffered an unexpected 2-3 defeat in the Champions League group stage at the Emirates Stadium.
Pardo opened the scoring for the visitors before Walcott restored parity. However, an own goal by Ospina before half-time gave the Greek side the lead again.
Alexis Sanchez scored the equaliser in the second half, but just a minute later, Finnbogason scored the third to give the visitors the victory.
Five years passed before the Thrylos returned to visit Arsenal in North London. The Greek side once again claimed victory on English soil, this time securing their place in the last 16 of the 2019/20 Europa League.
A goal from Cisse was enough to send the game into extra time, as the Gunners had claimed a 1-0 victory in Greece.
Just when it looked like Aubameyang's equaliser in the 113th minute would be enough to secure a draw and qualify for the next round, El-Arabi fired home in the 120th minute to claim a 2-1 victory and qualify for the last 16 on away goals.
A year later, the nightmare was repeated on March 18th, 2021, at the Emirates Stadium, although it had a happy ending.
El-Arabi put his team ahead after the break, but the Gunners managed to seal their place in the Europa League quarter-finals as they had secured a 3-1 victory in the first leg in Greece, meaning that a narrow defeat to the Greek side was not enough to knock them out.
Arsenal now host Olympiacos, who have proved to be a real nightmare on their recent visits to North London, a run that Mikel Arteta's side will have to end if they are to secure their second consecutive victory in this 2025/26 Champions League.