This is a quote from the 9.3 patch notes:
> Teammates: Champion mastery, honor, and ranked armor or level border depending on which they've chosen to display
> Opponents: Champion mastery and honor
I have no idea why riot insists on not showing enemy's ranks. Everyone is using third party software or websites to check ally and enemy ranks and stats anyway. Why not include it in the game? It's already showing ally's ranks so it's not hard to implement, especially in this new loading screen. I've never heard a single **good** argument against this.