Pep had his team use those diagonals a lot at Bayern and it's a great weapon when you have Kolarov in the kind of form he currently is - tbf he is doing something he has not been allowed or asked to do to the extent he did yesterday - because it can help to isolate our winger one on one but, also, so long as our CB hits them when the team are pushed up and compact, if the winger does not get the ball, it is not in a position where our opponent can easily mount a counter attack; whilst we can get in their faces and win the ball back quickly. One of those many things that show that Pep is not into tiki-taka.