Pressure on Bayern and Liverpool, who must recover the disadvantages of the first leg against the battleships Psg and Real Madrid to achieve the feat of qualifying;
concern for Manchester City who have only one goal advantage in the return to Dortmund;
relief for Chelsea, who can manage two goals ahead of Porto at home.
The Champions gets to the heart and selects its semifinalists, leaving other top clubs on the street after Barcelona and Juve.
In the Europa League, Roma, the only Italian still in contention, receives Ajax after the precious success in Amsterdam.
Close to the semifinals Manchester United and Villarreal while there is a balance between Sparta Prague and Arsenal.
The defending champions are at greater risk.
Bayern, winner of six titles after an extraordinary season, comes out of breath to the decisive challenge with PSG.
Without goals and Lewandowski's charisma he dominated the game in the first leg but lost 3-2 to Mbappe 'and Neymar's magic.
Flick between injuries and technical choices has left out nine starters, drew with Union Berlin, and now Leipzig is back in the running for the Bundesliga.
But what matters is the Champions League and it will take a super performance by the Germans to oust the Parisians who, despite some absences, are in great shape, as they confirmed by winning in Strasbourg.
In the other quarter of the same side of the board there is another high level match.
Guardiola's City dominated Dortmund in the first leg but the 2-1 does not reassure the next Premier League champions because Haaland's Dortmund has quality.
Absolute supremacy does not always translate into victory, as Guardiola bitterly noted when he lost 2-1 at home to Bielsa's Leeds with 29 shots on goal.
However, the superior quality of the players, the determination of De Bruyne and the class of his champions leave Manchester as the favorite.
Same goes for Real Madrid who found their best players in the last phase.
Benzema is as decisive as Ronaldo was, Vinicius jr knows how to make a difference.
And the two-goal advantage is a nest egg that could be enough to contain this year's lackluster Liverpool.
Real is back in contention for the La Liga championship, beating Barca in the Clasico on Saturday night and joining Atletico at the top.
Klopp is not enchanted by the limited success against Aston Villa: except for Salah, the Reds seem to be the stunt doubles of the team that has dominated in the other seasons.
It will take a great deal to earn the semifinal where Chelsea would most likely find that at Stanford Bridge can calmly manage the two-goal advantage over Porto.
The results of Serie A make Roma's progress in the Europa League even more important: after last week's success, however, another test of character is needed because Ajax have lost many of their jewels, but the others who they are maturing however they have quality.
Another challenge with Manchester United, favored over Granada, 37 years after the European Cup final, would be suggestive, but Fonseca knows that it will not be a foregone conclusion to reach the semifinals.