Talk:Armor penetration/@comment-3217613-20111118102533/@comment-74.122.245.137-20111130212623

From a Riot developper :

[QUOTE=PhailRaptor;11487633]For both Armor and MR, it is applied in the following order:

% Reduction Flat Reduction Flat Penetration % Penetration

Note that Reduction will always work, while Penetration stops when the defensive stat has been put to zero, as you cannot penetrate what isn't there.[/QUOTE]