The Reds picked up six yellow cards during their defeat at Parc des Princes, with their manager unhappy with the standard of officiating
Jurgen Klopp blasted referee Szymon Marciniak after Liverpool's Champions League hopes were left hanging by a thread following defeat to Paris St Germain.
The Reds lost 2-1 in the French capital and must beat Napoli at Anfield - either 1-0 or by two clear goals - in their final Group C game to qualify for the knockout stages.
His team were outplayed for swathes of the contest, but an angry Klopp's main focus in his post-match interviews was on the performance of the official.