Kylian Mbappé

Having lost heavily to a side missing its first-choice front three, Zinedine Zidane's men must reflect on where they're going wrong - and must do so urgently.

The gaping difference between Atlético and Madrid was that the former had unyielding belief while the latter did not, hence the respective outcomes on Wednesday night.

The Champions League group stage took flight on Tuesday night with good results for Barcelona and especially Valencia.