Over the course of its history, the UEFA Champions League has provided some incredible moments, none more so than the grandstand comebacks staged in the knockout rounds of the competition.
From Barca's dramatic fightback against PSG to a star-studded Milan side falling short against Deportivo La Coruna, we take a look at the biggest comebacks in UCL history...
Nicknamed the 'Remontada', the 2016/17 round of 16 tie between Barcelona and Paris Saint-Germain remains the sole time a four-goal deficit has been overturned in the history of the tournament.
An Angel Di Maria brace, combined with goals from Julian Draxler and Edinson Cavani put PSG well in the ascendency ahead of the second leg at the Nou Camp, with Barca registering just one shot on target all night long in the French capital.
On their first leg display, the Blaugrana looked down and out, however, they raced into a 3-0 lead in front of their home fans. When PSG hit back courtesy of Cavani, the tie looked dead again with Barca needing to hit the back of the net three more times to overcome the away goals rule.
Up stepped Neymar.
The Brazilian slammed home a stunning free-kick and a penalty before providing the assist for Sergi Roberto's spectacular equaliser.
Taking a three-goal lead to Portugal, minnows Bodo/Glimt were on the brink of reaching the UEFA Champions League last eight for the first time in their history.
Unfortunately for the Norwegian outfit, their opponents Sporting CP were not in the mood for fairytales.
Goncalo Inacio put the home side ahead before strikes from Pedro Goncalves and Luis Javier Suarez ensured the game headed to extra-time with the scores level at 3-3.
After 182 minutes of play over the tie, Maximiliano Araujo put Sporting ahead of the first time with Rafael Nel capping off a memorable night with an injury time finish.
A year one from mounting a famous comeback of their own, Barca were on the receiving end of a epic turnaround at the hands of Roma.
Two own goals and a Luis Suarez finish put Barca three goals to the good before Edin Dzeko grabbed, what looked like, a consolation as the first leg was nearing its end.
However, it proved to be a crucial away strike as Roma put the Spanish giants to the sword in the Stadio Olimpico.
Dzeko once again found the net to get Roma off to a great start and things got even better for the home team when the Bosnian was fouled in the box, giving Daniele De Rossi the opportunity to convert from the penalty spot on his 600th club appearance.
The legendary Italian duly slotted the ball home before, with eight minutes remaining, Greek defender Kostas Manolas produced an iconic glancing header that will live long in the memory of the Giallorossi faithful.
Truly a European powerhouse at the time, Milan, even with the might of Kaka, Andrea Pirlo and Paolo Maldini could not hold onto a 3-0 lead against Deportivo La Coruna.
The Spanish outfit did take the lead but a Kaka brace, as well as a goal a piece from Pirlo and Andriy Shevchenko, gave Milan a 4-1 advantage heading into the second leg.
Deportivo again struck first but this time Milan could not mount a fightback and, after pouncing on mistakes by Maldini and Alessandro Nesta, it was Javier Irureta's side who made their way into the last eight of the competition.