Monaco’s most important tactical feature throughout their Champions League campaign was their defence. From six matches, they topped their group by scoring (only) four goals; but conceded only a single goal, from Benfica’s Anderson Talisca. In the last 16 – against Arsenal – Monaco won 3-1 at the Emirates before going through 3-3 on aggregate. Their journey was finally stopped by the Old Lady of Juventus in the quarter finals, as Arturo Vidal managed the only goal. In this article, we will look into some of the key aspects of Leonardo Jardim’s system, particularly the defensive play.