Again, you didn't answer. Who should have played instesd of Walker? Literally we had 11 senior players + Ederson available today.
Only 1 time this season we have had the chance to plah 4 CB, and guess what? That's what Pep played. Walker is right now the 7th option for Pep in defense, it just happens that we barely have more than 5 players available in defense at any point in this season.
We played well, and we would have won. Again stupidity because people like you only comment whether we win or not. That's all what your opinion is about.