It was a warning shot yesterday, at the right time too before the CL and the Copa final and because the blancos lost. The physical form in the second half wasn't good enough to beat top teams. Especially Lamine and Pedri need more pauses.
I understand that it's difficult to rotate your two best players out, but when they're tired and lose focus, they start to make mistakes and we won't win the important games that way. Especially with Flick's tactic, where a lack of focus often results for the opponent in a 1v1 situation against Tek. Betis is after us the strongest 2025 LaLiga team so far, so it's not the end of the world to lose points here, but I hope Flick will see this as a warning shot to give them more pauses.
The game against Leganes between both Dortmund games is the perfect opportunity to rest Lamine and Pedri, give them max. 30 minutes. Then we play 2 games at home before the CdR, against Mallorca will be a good opportunity for rotation again, so the team is fresh for the final and the CL semis right after. Valladolid is a must rotation before the second leg of the semis as well.
Flick needs to rotate against Leganes, Mallorca and Valladolid, so we don't see another second half like yesterday.