

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: 88,095,030
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 15.15 is the strongest counter to support champions of Pyke, Mel & Senna. While Karthus support is countered most by support champions of Soraka, Milio & Zyra. Below is a detailed breakdown of Karthus support counters against support champions with a minimum of 100 games.


Soraka
the Starchild
Karthus wins against Soraka 39.10% of the time which is 9.11% lower against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 5.64% less often than would be expected.
The average opponent winrate against Soraka is 48.21%.


Milio
The Gentle Flame
Karthus wins against Milio 40.15% of the time which is 7.24% lower against Milio than the average opponent.
After normalising both champions win rates Karthus wins against Milio 3.78% less often than would be expected.
The average opponent winrate against Milio is 47.39%.


Zyra
Rise of the Thorns
Karthus wins against Zyra 40.20% of the time which is 8.40% lower against Zyra than the average opponent.
After normalising both champions win rates Karthus wins against Zyra 4.93% less often than would be expected.
The average opponent winrate against Zyra is 48.60%.


Yuumi
the Magical Cat
Karthus wins against Yuumi 42.54% of the time which is 8.76% lower against Yuumi than the average opponent.
After normalising both champions win rates Karthus wins against Yuumi 5.28% less often than would be expected.
The average opponent winrate against Yuumi is 51.30%.


Lulu
the Fae Sorceress
Karthus wins against Lulu 43.24% of the time which is 5.90% lower against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 2.43% less often than would be expected.
The average opponent winrate against Lulu is 49.14%.


Pantheon
the Unbreakable Spear
Karthus wins against Pantheon 43.52% of the time which is 7.31% lower against Pantheon than the average opponent.
After normalising both champions win rates Karthus wins against Pantheon 3.83% less often than would be expected.
The average opponent winrate against Pantheon is 50.83%.


Nami
the Tidecaller
Karthus wins against Nami 43.85% of the time which is 3.98% lower against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 0.52% less often than would be expected.
The average opponent winrate against Nami is 47.83%.


Thresh
the Chain Warden
Karthus wins against Thresh 45.42% of the time which is 4.43% lower against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 0.95% less often than would be expected.
The average opponent winrate against Thresh is 49.85%.


Swain
the Noxian Grand General
Karthus wins against Swain 45.54% of the time which is 4.55% lower against Swain than the average opponent.
After normalising both champions win rates Karthus wins against Swain 1.07% less often than would be expected.
The average opponent winrate against Swain is 50.09%.


Lux
the Lady of Luminosity
Karthus wins against Lux 45.93% of the time which is 4.01% lower against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 0.53% less often than would be expected.
The average opponent winrate against Lux is 49.94%.


Karma
the Enlightened One
Karthus wins against Karma 46.40% of the time which is 3.71% lower against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 0.23% less often than would be expected.
The average opponent winrate against Karma is 50.11%.


Morgana
the Fallen
Karthus wins against Morgana 46.57% of the time which is 2.20% lower against Morgana than the average opponent.
After normalising both champions win rates Karthus wins against Morgana 1.27% more often than would be expected.
The average opponent winrate against Morgana is 48.77%.


Tahm Kench
The River King
Karthus wins against Tahm Kench 47.17% of the time which is 3.63% lower against Tahm Kench than the average opponent.
After normalising both champions win rates Karthus wins against Tahm Kench 0.15% less often than would be expected.
The average opponent winrate against Tahm Kench is 50.80%.


Braum
the Heart of the Freljord
Karthus wins against Braum 47.22% of the time which is 2.17% lower against Braum than the average opponent.
After normalising both champions win rates Karthus wins against Braum 1.31% more often than would be expected.
The average opponent winrate against Braum is 49.39%.


Leona
the Radiant Dawn
Karthus wins against Leona 47.28% of the time which is 1.62% lower against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 1.85% more often than would be expected.
The average opponent winrate against Leona is 48.90%.


Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 49.66% of the time which is 0.92% lower against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 2.56% more often than would be expected.
The average opponent winrate against Blitzcrank is 50.58%.


Seraphine
the Starry-Eyed Songstress
Karthus wins against Seraphine 50.00% of the time which is 0.70% lower against Seraphine than the average opponent.
After normalising both champions win rates Karthus wins against Seraphine 2.78% more often than would be expected.
The average opponent winrate against Seraphine is 50.70%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 50.22% of the time which is 0.48% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 3.00% more often than would be expected.
The average opponent winrate against Nautilus is 50.70%.


Senna
the Redeemer
Karthus wins against Senna 50.49% of the time which is 1.34% lower against Senna than the average opponent.
After normalising both champions win rates Karthus wins against Senna 2.14% more often than would be expected.
The average opponent winrate against Senna is 51.83%.


Mel
the Soul's Reflection
Karthus wins against Mel 53.38% of the time which is 0.36% higher against Mel than the average opponent.
After normalising both champions win rates Karthus wins against Mel 3.84% more often than would be expected.
The average opponent winrate against Mel is 53.02%.


Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 53.95% of the time which is 2.75% higher against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 6.23% more often than would be expected.
The average opponent winrate against Pyke is 51.20%.