Barca overcame a 4-0 defeat to PSG in a last-16 first leg in 2017 by winning the second leg at home 6-1.
Paris St Germain's Kylian Mbappe scored a stunning hat-trick as his side overcame the absence of Neymar to thrash Barcelona 4-1 away in their Champions League last-16 first leg on Tuesday to move within full view of the quarter-finals.
Lionel Messi had blasted Barca ahead with a penalty in the first half but Mbappe pulled the French champions level with a classy piece of control and finishing to complete a flowing team move also involving Marco Verratti and Layvin Kurzawa.
Mbappe, who had not scored in the Champions League knockouts for two years before Tuesday, smashed PSG into the lead in the 65th minute while Moise Kean took advantage of some woeful Barca marking to head in a third goal for the visitors in the 70th.
The insatiable Mbappe looked hungry for more though and, after being denied his third goal by Barca keeper Marc-Andre ter Stegen, he completed his treble in the 85th minute by curling the ball past the German into the top corner.
"We wanted to come here and win and we did that in style," said the 22-year-old France striker. "Tonight was magnificent, but we haven't won anything yet."
Barca overcame a 4-0 defeat to PSG in a last-16 first leg in 2017 by winning the second leg at home 6-1 and the Catalans now face another daunting task in turning this tie around when they visit the Parc des Princes on March 10.
Barca coach Ronald Koeman had no complaints about the heavy defeat and was pessimistic about the prospects of another turnaround.
"The result reflects how superior PSG were, they were much more effective than us," said the Dutchman.
"I could tell you lies but the fact is that at 4-1 down from the home leg, there are very few chances of going through."
Liverpool stun RB Leipzig
Goals from Mohamed Salah and Sadio Mane helped Liverpool to snap a three-match losing run as they stunned hosts RB Leipzig 2-0 in their Champions League Round of 16 first leg on Tuesday.
Juergen Klopp's team may have written off their chances of winning back-to-back Premier League titles after losing three successive domestic matches but they gained a clear advantage in their European tie going into the March 10 return leg.
Salah easily intercepted a back pass by Leipzig's Marcel Sabitzer to put the visitors ahead in the 53rd minute and on course for their first win in any competition since late January.
Mane then pounced on another mistake when Nordi Mukiele failed to clear a long ball five minutes later, leaving the Germans down for the count in Budapest's Puskas Arena where the game had been relocated due to COVID-19 restrictions in Germany.
The Germans got off to a better start and Dani Olmo's downward header in the fifth minute bounced off the base of the post.
With Leipzig defending high, Liverpool initially tried to slice through with deep crosses and one of them found Salah in the 15th but his chip was blocked by keeper Peter Gulasci.
Andy Robertson then tried his luck with an audacious 40-metre lob that almost caught Gulasci out of position but they had to wait until the 53rd to strike with their first chance of the second half.
Leipzig coach Julian Nagelsmann then saw his players gift away another goal with Mukiele's error and Mane's crisp finish.
Leipzig, who came into the game on a four-game winning run in all competitions, were largely toothless in attack following the two goals until Tyler Adam's miss in stoppage time.
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