With matchday five in the Champions League done and dusted, focus now turns to the final round and in specific relation to the English sides in action tonight, the big questions are: what do Liverpool have to do to qualify? And what of Spurs?
Spurs nicked a win against Inter Milan at Wembley, while Liverpool's hopeless away form continued in Paris against PSG. They have now lost every European game they have played away from Anfield since last season's quarter-final at Man City.
What do Liverpool have to do to qualify?
Liverpool's rotten away form - in which they've lost all of their games away from Anfield thus far - means they have a lot of work to do on Matchday Six to make it into the knockout rounds. In spite of three defeats, however, the slow bicycle race that has become of this group means that their fate is still in their own hands.
If Liverpool beat Napoli by two clear goals they will qualify by virtue of their superior head to head record. Owing to Napoli's late concession against Red Star, the permutations are such that a 1-0 victory is good to go through, but if they concede, they will have to win by two clear goals.
It is an exact replica of the scenario Liverpool faced at this stage of the competition against Olympiakos in 2004/05. From there, however, Steven Gerrard scored a remarkable late goal and the rest is history, as Liverpool went on to win the competition.
What do Tottenham have to do to qualify?
Spurs win at home to Inter Milan at Wembley keeps their improbable escape alive. Despite having just one point from their opening three games, consecutive wins give them a chance of qualification. They must, however, go to the Camp Nou and better Inter's result against PSV in the final round of games. It sounds a tough task, but given that Barca are guaranteed to top the group, they might rest a few players and make it a slightly easier task for Pochettino's team.