Paris Saint-Germain will take a narrow but fully deserved 2-1 lead into their second leg clash with Valencia after a dramatic late twist at the Mestalla.
Having led 2-0 with a thoroughly dominant performance, Carlo Ancelotti's side let a late Adil Rami goal slip before Zlatan Ibrahimovic was sent off for an aggressive double foul on Andres Guardado and Dani Parejo.
Goals from Ezequiel Lavezzi and Javier Pastore had the visitors up 2-0 at half-time, with Lucas Moura in sparkling form.
But despite the win appearing narrow in the scoreline, it was a dominant display from the capital club under the watchful eye of new signing David Beckham.
The final result puts PSG under pressure for the return match in three weeks' time when Valencia visit Paris, and Ibrahimovic's absence will be the most keenly felt.
Marco Verratti will also miss the second leg after accumulating too many yellow cards, and Ancelotti's side now have a few lessons to take into the home clash.
Here's what we learned from the match.