The UEFA Champions League returns on Wednesday with Matchday 8, which could very well be the most hectic, chaotic day in terms of results that the sport has ever seen. All 38 teams will be in action as 19 games will take place simultaneously at 3 p.

Which teams are in the hunt for automatic qualification for the last 16? Who's on the brink of elimination? What about the playoffs?

Barcelona twice fight back from two goals down - and two Wojciech Szczesny howlers - to snatch a dramatic victory at Benfica.