

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.
All Ranks Champions Analysed: 54,976,250
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 15.16 is the strongest counter to support champions of Pyke, Lux & Lulu. While Karthus support is countered most by support champions of Nami, Zyra & Blitzcrank. Below is a detailed breakdown of Karthus support counters against support champions with a minimum of 100 games.


Nami
the Tidecaller
Karthus wins against Nami 39.17% of the time which is 8.59% lower against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 5.37% less often than would be expected.
The average opponent winrate against Nami is 47.76%.


Zyra
Rise of the Thorns
Karthus wins against Zyra 40.37% of the time which is 7.37% lower against Zyra than the average opponent.
After normalising both champions win rates Karthus wins against Zyra 4.15% less often than would be expected.
The average opponent winrate against Zyra is 47.74%.


Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 41.96% of the time which is 8.48% lower against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 5.24% less often than would be expected.
The average opponent winrate against Blitzcrank is 50.44%.


Thresh
the Chain Warden
Karthus wins against Thresh 42.77% of the time which is 6.86% lower against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 3.62% less often than would be expected.
The average opponent winrate against Thresh is 49.63%.


Leona
the Radiant Dawn
Karthus wins against Leona 45.71% of the time which is 3.19% lower against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 0.04% more often than would be expected.
The average opponent winrate against Leona is 48.90%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 46.32% of the time which is 4.39% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 1.15% less often than would be expected.
The average opponent winrate against Nautilus is 50.71%.


Morgana
the Fallen
Karthus wins against Morgana 48.48% of the time which is 0.30% lower against Morgana than the average opponent.
After normalising both champions win rates Karthus wins against Morgana 2.93% more often than would be expected.
The average opponent winrate against Morgana is 48.78%.


Lulu
the Fae Sorceress
Karthus wins against Lulu 49.62% of the time which is 0.55% lower against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 2.69% more often than would be expected.
The average opponent winrate against Lulu is 50.17%.


Lux
the Lady of Luminosity
Karthus wins against Lux 50.64% of the time which is 0.68% higher against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 3.92% more often than would be expected.
The average opponent winrate against Lux is 49.96%.


Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 58.47% of the time which is 7.19% higher against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 10.43% more often than would be expected.
The average opponent winrate against Pyke is 51.28%.