Liverpool, Barcelona, PSG and RB Leipzig are in action.
The Champions League returns tonight, as Liverpool look for a welcome distraction from their poor domestic form.
Jurgen Klopp's side take on Germany's R-B Leipzig in Budapest this evening, in the first leg of their last 16 tie.
German Covid-19 regulations have forced the game to be played in a neutral country.
Liverpool exited the competition at this stage of the season last term, losing to Atletico Madrid.
That kicks off at 8, as does the meeting of Barcelona and Paris Saint Germain.