Liverpool host Paris Saint-Germain at Anfield on Tuesday night as Jürgen Klopp's men embark on what they hope will be another long European adventure.
The teams have not met since 1997 and both head into the Group C opener with five wins from five matches in their domestic leagues.
PSG boss Thomas Tuchel oversaw a 4-0 success against Saint-Etienne on Friday night with star forwards Kylian Mbappe and Neymar watching from the stands, while a full-strength Liverpool secured a 2-1 victory at Tottenham Hotspur on Saturday.
All of Les Parisiens' big guns are expected to return for Tuesday's clash and we've picked out three key battles that could help decide the match.