There is a crucial evening ahead for Liverpool and Tottenham.
The Champions League knockout stage awaits - can they get there?
Both teams have their fate in their own hands: victory will mean progress.
There's only one slight issue, which is this, Liverpool have to win.
If they do, and PSG are beaten at Red Star Belgrade, then it's a simple picture: both Liverpool and Napoli will go through. Who finishes top will depend on the result at Anfield.
There are two ways Liverpool can finish above Napoli - with a 1-0 win or with a victory by two goals or more.
Remember: it's not goal difference that separates teams level on points but the head-to-head record between sides. Exactly.
A 1-0 win would edge them through on goals scored, likewise a win by two goals or more. But if Napoli lose by one goal and score themselves, they would have the upper hand on away goals over their two games.
Elsewhere, Spurs are second, ahead of Inter because they have a better head-to-head record in their two matches - they lead the Italians on away goals.
They lost 2-1 to Inter in the San Siro in their first meeting in September. So that's 2-2 on aggregate, as it were, after their 1-0 home win.
This all means that if Spurs finish level on points with Inter they will be the ones who go through.
So, Spurs will qualify if their result at Barcelona matches or betters Inter's result at home to PSV.
Other games tonight
Red Star Belgrade vs PSG
Barcelona vs Tottenham Hotspurs
Internationale vs PSV Eindhoven
Club Brugge vs Atletico Madrid
This should be tasty. Stay with us for all the updates.
Liverpool must beat Napoli tonight or face elimination from the Champions League