• Arsenal and Olympiakos have been paired in the same Champions League group for the fourth time in the last seven seasons.
  • All six of their previous encounters in the Champions League have ended in a home win.
  • In fact, Olympiakos have lost all 12 of their away games against English teams in European competition, scoring only three goals and conceding 37 in the process.
  • Arsenal have lost five of their last 11 Champions League home games. They had lost only one of their previous 39 games on their own soil.
  • Arsenal have only failed to score three times in their last 29 Champions League games.
  • Arsenal have made it past the group stages in the last 12 seasons but have been knocked out at the last 16 stage in the last five campaigns.
  • Only one of Olympiakos’ last 30 Champions League games has ended in a draw (W14 L15). It was against Benfica in October 2013 (1-1).
  • Olympiakos have lost 50 Champions League games – only FC Porto have lost more in the competition (51).
  • Olympiakos have only won five of their 52 Champions League games played away from home (D9 L38). Their last victory on the road dates back to October 2013 against Anderlecht (3-0).
  • Olympiakos had more headed shots on target than any other team on the opening matchday (3).
  • Theo Walcott has failed to score in his last eight Champions League games at the Emirates, his last goal dating back to December 2010 against Partizan Belgrade.