

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.
Gold+ Champions Analysed: 97,960,235
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 support vs support Counters
Karthus support on Patch 30 is the strongest counter to support champions of Pyke, Karma & Blitzcrank. While Karthus support is countered most by support champions of Milio, Nami & Soraka. Below is a detailed breakdown of Karthus support counters against support champions with a minimum of 100 games.


Milio
The Gentle Flame
Karthus wins against Milio 33.85% of the time which is 13.16% lower against Milio than the average opponent.
After normalising both champions win rates Karthus wins against Milio 9.35% less often than would be expected.
The average opponent winrate against Milio is 47.01%.


Nami
the Tidecaller
Karthus wins against Nami 37.50% of the time which is 10.00% lower against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 6.18% less often than would be expected.
The average opponent winrate against Nami is 47.50%.


Soraka
the Starchild
Karthus wins against Soraka 38.46% of the time which is 9.24% lower against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 5.42% less often than would be expected.
The average opponent winrate against Soraka is 47.70%.


Yuumi
the Magical Cat
Karthus wins against Yuumi 39.06% of the time which is 11.66% lower against Yuumi than the average opponent.
After normalising both champions win rates Karthus wins against Yuumi 7.81% less often than would be expected.
The average opponent winrate against Yuumi is 50.72%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 42.86% of the time which is 7.43% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 3.58% less often than would be expected.
The average opponent winrate against Nautilus is 50.29%.


Thresh
the Chain Warden
Karthus wins against Thresh 44.23% of the time which is 4.87% lower against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 1.03% less often than would be expected.
The average opponent winrate against Thresh is 49.10%.


Leona
the Radiant Dawn
Karthus wins against Leona 44.35% of the time which is 4.01% lower against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 0.18% less often than would be expected.
The average opponent winrate against Leona is 48.36%.


Alistar
the Minotaur
Karthus wins against Alistar 44.66% of the time which is 5.79% lower against Alistar than the average opponent.
After normalising both champions win rates Karthus wins against Alistar 1.94% less often than would be expected.
The average opponent winrate against Alistar is 50.45%.


Lulu
the Fae Sorceress
Karthus wins against Lulu 45.93% of the time which is 3.07% lower against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 0.77% more often than would be expected.
The average opponent winrate against Lulu is 49.00%.


Lux
the Lady of Luminosity
Karthus wins against Lux 45.96% of the time which is 3.75% lower against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 0.10% more often than would be expected.
The average opponent winrate against Lux is 49.71%.


Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 46.77% of the time which is 2.96% lower against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 0.89% more often than would be expected.
The average opponent winrate against Blitzcrank is 49.73%.


Karma
the Enlightened One
Karthus wins against Karma 48.28% of the time which is 1.28% lower against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 2.57% more often than would be expected.
The average opponent winrate against Karma is 49.56%.


Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 60.18% of the time which is 9.96% higher against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 13.81% more often than would be expected.
The average opponent winrate against Pyke is 50.22%.