Last night in Paris. Tonight in Madrid.

PSG beat Bayern Munich 5-4 in Paris last night. Nine goals. The highest-scoring Champions League semi-final in history. Harry Kane opened from the spot. Kvaratskhelia equalised with a finish that had no right to be that clean. Joao Neves headed PSG in front. Michael Olise smashed Bayern level. Dembele scored from the spot, controversial, VAR-assisted, to make it 3-2 at half-time. Then Kvaratskhelia scored his second. Then Dembele's curled in off the post to make it 5-2.

Then Bayern came back. Upamecano. Luis Diaz. 5-4.

The image that will still be discussed in three weeks isn't the scoreline. It's Manuel Neuer. The greatest goalkeeper of his generation went the full ninety minutes and made zero saves. Not one. Five shots on target. Five goals. The second leg is next Wednesday in Munich, and Bayern need one goal to take it to extra time.

Tonight, Arsenal are in Madrid. Atletico vs Arsenal, first leg, kicks off at 9pm BST. Arsenal have won all twelve of their Champions League matches this season. They're top of the Premier League by three points. Mikel Arteta's side have not lost in Europe all year.

The Metropolitano is a different question. Atletico have beaten Tottenham and Barcelona there this season. They knocked out Barcelona 3-2 on aggregate in the quarter-finals. Julian Alvarez has nine Champions League goals this term. Havertz and Eze are doubts for Arsenal.

This is Arsenal's second consecutive semi-final. They've never won the Champions League. Neither have Atletico. One of these clubs gets to Budapest on May 30th and meets either PSG or a Bayern side trying to overturn a one-goal deficit.

The winner of tonight's tie faces the most open Champions League final in years. After nine goals in Paris, anything feels possible.