The story of Paris Saint-Germain’s Nou Camp collapse can be told by one statistic.

Unai Emery’s side looked all but certain of reaching this year’s Champions League quarter-finals before kick-off, going into the away leg against Barcelona 4-0 up on aggregate.

Despite the Catalans clawing three goals back, Edinson Cavani’s thumping away goal just after the hour mark seemed to kill off a lingering hope of an unlikely comeback.

Barcelona vs PSG player ratings Show all 22 1 /22 Barcelona vs PSG player ratings Barcelona vs PSG player ratings Marc-Andre ter Stegen - 6 out of 10 Was rarely tested on an evening when all the action was taking further place up the pitch. Did his job when called upon. Getty Barcelona vs PSG player ratings Gerard Piqué - 7 Defiant and resilient throughout, displaying composure at the back and technical ability on the ball too. Getty Images Barcelona vs PSG player ratings Javier Mascherano - 7 Gave his all. Showed his intent from the start, putting in a series of important challenges and blocks. AFP/Getty Images Barcelona vs PSG player ratings Samuel Umtiti - 7 Dominant in the air and dominated in his battles with Cavani. Getty Images Barcelona vs PSG player ratings Rafinha - 6 Dangerous in drifting in from the flank and excellent in finding the right space but some of his deliveries were off the mark. Nonetheless, proved to be a nuisance for much of the night. Getty Barcelona vs PSG player ratings Sergio Busquets - 6 It was a scrappy and frantic night for the Spaniard. His challenges were mistimed and his passes misjudged but his energy was still invaluable in Barcelona's pressing game. Getty Images Barcelona vs PSG player ratings Ivan Rakitic - 7 A bundle of enegery throughout. His challenges were vital in breaking up PSG's forward game but almost cost Barcelona the game in allowing Kurzawa to set up Cavani for his away goal. Getty Images Barcelona vs PSG player ratings Andres Iniesta - 7 Pulled the strings for much of the, playing passes left, right and centre, and wasn't afriad to try his luck from outside the box. Dwindled in influence as the game wore on. AFP/Getty Images Barcelona vs PSG player ratings Lionel Messi - 7 Here, there, everywhere. It was another trademark performance from the Argentine but on this occasion he wasn't the man who Barcelona turned to. AFP/Getty Images Barcelona vs PSG player ratings Luis Suárez - 7 Showcased the best of his poaching abilities to snatch Barcelona's first goal and proved to be a menace for the entire 95 minutes. AFP/Getty Images Barcelona vs PSG player ratings Neymar - 9 Absolutely sensational. Was instrinsic to Barcelona's late fightback, scoring their first fourth and fifth goal before setting up Sergi Roberto's winner with an exquisite assist. Getty Barcelona vs PSG player ratings Kevin Trapp - 5 Poor decision-making handed Barca their first and failed to effectively deal with Iniesta's back-pass for the second. AFP/Getty Images Barcelona vs PSG player ratings Thomas Meunier - 4 His ill-timed foul on Neymar handed Barca their first penalty and third goal. Let down by sloppy mistakes. AFP/Getty Images Barcelona vs PSG player ratings Marquinhos - 4 Should have done much better for Barcelona's second, failing to assert himself against Iniesta inside his own box. It was night to forget in all for him. AFP/Getty Images Barcelona vs PSG player ratings Thiago Silva - 6 As ever, Silva was PSG's warrior. But although he rarely shirked a challenge even he was suspectible to lapses in concentration tonight and poor decision-making. Getty Images Barcelona vs PSG player ratings Layvin Kurzawa - 4 His disastrous attempt at a goal-line clearance handed Barcelona their second and he clearly struggled against Rafinha's pace and trickery. Impressive assist for Cavani's goal but, in all, the occasion appeared to get to him. AFP/Getty Images Barcelona vs PSG player ratings Adrien Rabiot - 5 Failed to deal with Barcelona's high-intense approach and incessant press. AFP/Getty Images Barcelona vs PSG player ratings Marco Verratti - 6 Started well but grew increasingly timid and quiet as the game wore on. Conceded a number of unnecessary challenges. AFP/Getty Images Barcelona vs PSG player ratings Blaise Matuidi - 4 Little of note to say. Looked overwhelmed at times. Getty Images Barcelona vs PSG player ratings Lucas Moura - 5 Kept himself busy in the first half but was repeatedly targeted by Barcelona's enforcers and struggled to shine as a result. AFP/Getty Images Barcelona vs PSG player ratings Edinson Cavani - 6 Did what was asked of him in expertly clinching PSG's vital away goal. Should have converted an early second-half chance though. Let down by his team-mates. Getty Images Barcelona vs PSG player ratings Julian Draxler - 5 Another player who failed to live up to the big occasion. AFP/Getty Images

Yet the Ligue 1 champions succumbed to a blind panic when Neymar improbably rifled in a free-kick in the 88th minute.

Between the time of that fourth goal by Barcelona and the final whistle, the visitors completed just four passes.

Such a meltdown becomes only more remarkable when you consider that three of those were made from restart kick-offs after each of Barça’s late goals.

In those nine mad minutes, Paris Saint-Germain’s players were so discombobulated by their hosts’ resurgence, they could no longer pass to a fellow white shirt.