Liverpool exploded back onto the European stage on Tuesday and beat Paris Saint-Germain 3-2 after Roberto Firmino came on to score an injury-time winner for the Anfield hosts.
Daniel Sturridge and James Milner scored within six minutes of one another to put Liverpool two goals up after 36 minutes, but Thomas Meunier halved the deficit before half-time to get PSG off the mark.
Kylian Mbappe equalised in the 83rd minute, but Merseyside roared last season's runners-up onto victory as Firmino, who came on for Sturridge, intervened late to claim all three points.
Thomas Tuchel Isn't the Man to Realise PSG's Champions League Dream
Ever since the Qatari takeover of 2011, it has been PSG's primary motive to one day win the Champions League, the true barometer of quality in Europe, but Thomas Tuchel showed signs on Tuesday he won't break the duck.