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: 45,381,140
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 15.16 is the strongest counter to support champions of Pyke, Blitzcrank & Pantheon. While Karthus middle is countered most by support champions of Soraka, Seraphine & Thresh. Below is a detailed breakdown of Karthus middle counters against support champions with a minimum of 100 games.
Soraka
the Starchild
Karthus wins against Soraka 36.99% of the time which is 11.36% lower against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 8.56% less often than would be expected.
The average opponent winrate against Soraka is 48.35%.
Seraphine
the Starry-Eyed Songstress
Karthus wins against Seraphine 42.86% of the time which is 8.22% lower against Seraphine than the average opponent.
After normalising both champions win rates Karthus wins against Seraphine 5.41% less often than would be expected.
The average opponent winrate against Seraphine is 51.08%.
Thresh
the Chain Warden
Karthus wins against Thresh 43.64% of the time which is 6.02% lower against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 3.21% less often than would be expected.
The average opponent winrate against Thresh is 49.66%.
Morgana
the Fallen
Karthus wins against Morgana 43.73% of the time which is 5.08% lower against Morgana than the average opponent.
After normalising both champions win rates Karthus wins against Morgana 2.28% less often than would be expected.
The average opponent winrate against Morgana is 48.81%.
Milio
The Gentle Flame
Karthus wins against Milio 43.95% of the time which is 3.15% lower against Milio than the average opponent.
After normalising both champions win rates Karthus wins against Milio 0.36% less often than would be expected.
The average opponent winrate against Milio is 47.10%.
Bard
the Wandering Caretaker
Karthus wins against Bard 44.35% of the time which is 5.41% lower against Bard than the average opponent.
After normalising both champions win rates Karthus wins against Bard 2.60% less often than would be expected.
The average opponent winrate against Bard is 49.76%.
Lux
the Lady of Luminosity
Karthus wins against Lux 44.85% of the time which is 5.10% lower against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 2.29% less often than would be expected.
The average opponent winrate against Lux is 49.95%.
Yuumi
the Magical Cat
Karthus wins against Yuumi 45.59% of the time which is 6.45% lower against Yuumi than the average opponent.
After normalising both champions win rates Karthus wins against Yuumi 3.64% less often than would be expected.
The average opponent winrate against Yuumi is 52.04%.
Leona
the Radiant Dawn
Karthus wins against Leona 47.16% of the time which is 1.72% lower against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 1.09% more often than would be expected.
The average opponent winrate against Leona is 48.88%.
Zyra
Rise of the Thorns
Karthus wins against Zyra 47.34% of the time which is 0.43% lower against Zyra than the average opponent.
After normalising both champions win rates Karthus wins against Zyra 2.37% more often than would be expected.
The average opponent winrate against Zyra is 47.77%.
Sona
Maven of the Strings
Karthus wins against Sona 47.46% of the time which is 0.19% lower against Sona than the average opponent.
After normalising both champions win rates Karthus wins against Sona 2.61% more often than would be expected.
The average opponent winrate against Sona is 47.65%.
Brand
the Burning Vengeance
Karthus wins against Brand 48.23% of the time which is 0.29% higher against Brand than the average opponent.
After normalising both champions win rates Karthus wins against Brand 3.09% more often than would be expected.
The average opponent winrate against Brand is 47.94%.
Braum
the Heart of the Freljord
Karthus wins against Braum 48.30% of the time which is 1.26% lower against Braum than the average opponent.
After normalising both champions win rates Karthus wins against Braum 1.55% more often than would be expected.
The average opponent winrate against Braum is 49.56%.
Nautilus
the Titan of the Depths
Karthus wins against Nautilus 48.44% of the time which is 2.28% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 0.53% more often than would be expected.
The average opponent winrate against Nautilus is 50.72%.
Mel
the Soul's Reflection
Karthus wins against Mel 48.51% of the time which is 4.55% lower against Mel than the average opponent.
After normalising both champions win rates Karthus wins against Mel 1.74% less often than would be expected.
The average opponent winrate against Mel is 53.06%.
Rakan
The Charmer
Karthus wins against Rakan 48.54% of the time which is 2.35% lower against Rakan than the average opponent.
After normalising both champions win rates Karthus wins against Rakan 0.46% more often than would be expected.
The average opponent winrate against Rakan is 50.89%.
Nami
the Tidecaller
Karthus wins against Nami 48.76% of the time which is 1.02% higher against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 3.82% more often than would be expected.
The average opponent winrate against Nami is 47.74%.
Lulu
the Fae Sorceress
Karthus wins against Lulu 49.23% of the time which is 0.93% lower against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 1.88% more often than would be expected.
The average opponent winrate against Lulu is 50.16%.
Karma
the Enlightened One
Karthus wins against Karma 49.74% of the time which is 0.27% lower against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 2.54% more often than would be expected.
The average opponent winrate against Karma is 50.01%.
Rell
the Iron Maiden
Karthus wins against Rell 50.00% of the time which is 0.62% lower against Rell than the average opponent.
After normalising both champions win rates Karthus wins against Rell 2.19% more often than would be expected.
The average opponent winrate against Rell is 50.62%.
Senna
the Redeemer
Karthus wins against Senna 50.38% of the time which is 1.27% lower against Senna than the average opponent.
After normalising both champions win rates Karthus wins against Senna 1.54% more often than would be expected.
The average opponent winrate against Senna is 51.65%.
Swain
the Noxian Grand General
Karthus wins against Swain 50.46% of the time which is 0.23% lower against Swain than the average opponent.
After normalising both champions win rates Karthus wins against Swain 2.58% more often than would be expected.
The average opponent winrate against Swain is 50.69%.
Xerath
the Magus Ascendant
Karthus wins against Xerath 50.48% of the time which is 1.06% higher against Xerath than the average opponent.
After normalising both champions win rates Karthus wins against Xerath 3.87% more often than would be expected.
The average opponent winrate against Xerath is 49.42%.
Alistar
the Minotaur
Karthus wins against Alistar 50.85% of the time which is 0.08% higher against Alistar than the average opponent.
After normalising both champions win rates Karthus wins against Alistar 2.89% more often than would be expected.
The average opponent winrate against Alistar is 50.77%.
Pantheon
the Unbreakable Spear
Karthus wins against Pantheon 51.30% of the time which is 0.68% higher against Pantheon than the average opponent.
After normalising both champions win rates Karthus wins against Pantheon 3.49% more often than would be expected.
The average opponent winrate against Pantheon is 50.62%.
Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 51.40% of the time which is 1.03% higher against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 3.84% more often than would be expected.
The average opponent winrate against Blitzcrank is 50.37%.
Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 51.85% of the time which is 0.61% higher against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 3.42% more often than would be expected.
The average opponent winrate against Pyke is 51.24%.


























