

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: 33,008,407
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 middle vs support Counters
Karthus middle on Patch 30 is the strongest counter to support champions of Leona, Thresh & Nami. While Karthus middle is countered most by support champions of Yuumi, Janna & Alistar. Below is a detailed breakdown of Karthus middle counters against support champions with a minimum of 100 games.


Yuumi
the Magical Cat
Karthus wins against Yuumi 33.80% of the time which is 16.90% lower against Yuumi than the average opponent.
After normalising both champions win rates Karthus wins against Yuumi 15.08% less often than would be expected.
The average opponent winrate against Yuumi is 50.70%.


Janna
the Storm's Fury
Karthus wins against Janna 36.54% of the time which is 11.45% lower against Janna than the average opponent.
After normalising both champions win rates Karthus wins against Janna 9.64% less often than would be expected.
The average opponent winrate against Janna is 47.99%.


Alistar
the Minotaur
Karthus wins against Alistar 41.80% of the time which is 7.28% lower against Alistar than the average opponent.
After normalising both champions win rates Karthus wins against Alistar 5.46% less often than would be expected.
The average opponent winrate against Alistar is 49.08%.


Karma
the Enlightened One
Karthus wins against Karma 41.82% of the time which is 7.73% lower against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 5.91% less often than would be expected.
The average opponent winrate against Karma is 49.55%.


Rakan
The Charmer
Karthus wins against Rakan 43.24% of the time which is 6.21% lower against Rakan than the average opponent.
After normalising both champions win rates Karthus wins against Rakan 4.39% less often than would be expected.
The average opponent winrate against Rakan is 49.45%.


Soraka
the Starchild
Karthus wins against Soraka 43.75% of the time which is 4.43% lower against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 2.62% less often than would be expected.
The average opponent winrate against Soraka is 48.18%.


Bard
the Wandering Caretaker
Karthus wins against Bard 46.96% of the time which is 1.46% lower against Bard than the average opponent.
After normalising both champions win rates Karthus wins against Bard 0.35% more often than would be expected.
The average opponent winrate against Bard is 48.42%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 47.31% of the time which is 2.95% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 1.13% less often than would be expected.
The average opponent winrate against Nautilus is 50.26%.


Braum
the Heart of the Freljord
Karthus wins against Braum 47.37% of the time which is 0.41% lower against Braum than the average opponent.
After normalising both champions win rates Karthus wins against Braum 1.40% more often than would be expected.
The average opponent winrate against Braum is 47.78%.


Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 49.00% of the time which is 0.46% lower against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 1.36% more often than would be expected.
The average opponent winrate against Blitzcrank is 49.46%.


Lulu
the Fae Sorceress
Karthus wins against Lulu 49.35% of the time which is 0.96% higher against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 2.77% more often than would be expected.
The average opponent winrate against Lulu is 48.39%.


Lux
the Lady of Luminosity
Karthus wins against Lux 50.00% of the time which is 0.78% lower against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 1.04% more often than would be expected.
The average opponent winrate against Lux is 50.78%.


Milio
The Gentle Flame
Karthus wins against Milio 50.00% of the time which is 2.18% higher against Milio than the average opponent.
After normalising both champions win rates Karthus wins against Milio 3.99% more often than would be expected.
The average opponent winrate against Milio is 47.82%.


Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 50.00% of the time which is 0.05% lower against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 1.77% more often than would be expected.
The average opponent winrate against Pyke is 50.05%.


Nami
the Tidecaller
Karthus wins against Nami 51.72% of the time which is 3.84% higher against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 5.65% more often than would be expected.
The average opponent winrate against Nami is 47.88%.


Thresh
the Chain Warden
Karthus wins against Thresh 52.51% of the time which is 4.03% higher against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 5.84% more often than would be expected.
The average opponent winrate against Thresh is 48.48%.


Leona
the Radiant Dawn
Karthus wins against Leona 53.70% of the time which is 4.99% higher against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 6.81% more often than would be expected.
The average opponent winrate against Leona is 48.71%.