Many of the biggest comebacks in Champions League history can be traced back to the last few years.
There was Barcelona’s epic Remontada against PSG in 2017, where the Spanish side turned around a 4–0 first-leg loss with a 6–1 stunner. Two years later, Barcelona was on the other side of an epic collapse when Liverpool erased a 3–0 loss with a 4–0 win in the semifinal, nonetheless. And in the other semifinal in that same year, Tottenham put together a second-half charge in the second leg to overcome a 3–0 aggregate deficit with a Lucas Moura hat trick.