

This will vary because unlike other stat sites we include 100% of a brackets champions played and never include champions that don't belong in the bracket.
Emerald+ Champions Analysed: 34,297,383
We include 100% of the champions played of every selected tier bracket in our analysis, we never include champions from outside the tier quoted tier.


Karthus Counters
Karthus top vs support Counters
Karthus top on Patch 30 is the strongest counter to support champions of Karma, Thresh & Nami. While Karthus top is countered most by support champions of Braum, Lulu & Nautilus. Below is a detailed breakdown of Karthus top counters against support champions with a minimum of 100 games.


Braum
the Heart of the Freljord
Karthus wins against Braum 43.64% of the time which is 3.27% lower against Braum than the average opponent.
After normalising both champions win rates Karthus wins against Braum 2.54% less often than would be expected.
The average opponent winrate against Braum is 46.91%.


Lulu
the Fae Sorceress
Karthus wins against Lulu 44.03% of the time which is 4.00% lower against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 3.27% less often than would be expected.
The average opponent winrate against Lulu is 48.03%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 45.83% of the time which is 3.80% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 3.06% less often than would be expected.
The average opponent winrate against Nautilus is 49.63%.


Nami
the Tidecaller
Karthus wins against Nami 46.72% of the time which is 0.75% lower against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 0.02% less often than would be expected.
The average opponent winrate against Nami is 47.47%.


Thresh
the Chain Warden
Karthus wins against Thresh 47.79% of the time which is 0.16% lower against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 0.57% more often than would be expected.
The average opponent winrate against Thresh is 47.95%.


Karma
the Enlightened One
Karthus wins against Karma 51.49% of the time which is 1.87% higher against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 2.61% more often than would be expected.
The average opponent winrate against Karma is 49.62%.