Since the introduction of the "European Cup" in 1955, it has become one of the most coveted trophies in club football. In 1992 it was renamed "UEFA Champions League", but it was only the name that changed.
Controlling possession will be key in Arsenal's do-or-die Champions League clash against Olympiakos Piraeus on Wednesday, right back Hector Bellerin has said.
Alexis Sanchez scored twice for Arsenal against Dinamo Zagreb but it was something he did a long way from goal which summed up their never-say-die attitude.
Arsenal manager Arsene Wenger has accused European football governing body UEFA of accepting doping because they allowed his team's defeat by Dinamo Zagreb.