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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: 15,076,682
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 bottom vs support Counters
Karthus bottom on Patch 15.11 is the strongest counter to support champions of Blitzcrank, Lux & Rell. While Karthus bottom is countered most by support champions of Sona, Braum & Soraka. Below is a detailed breakdown of Karthus bottom counters against support champions with a minimum of 100 games.
Sona
Maven of the Strings
Karthus wins against Sona 46.09% of the time which is 0.65% lower against Sona than the average opponent.
After normalising both champions win rates Karthus wins against Sona 6.34% less often than would be expected.
The average opponent winrate against Sona is 46.74%.
Braum
the Heart of the Freljord
Karthus wins against Braum 46.11% of the time which is 0.75% lower against Braum than the average opponent.
After normalising both champions win rates Karthus wins against Braum 6.44% less often than would be expected.
The average opponent winrate against Braum is 46.86%.
Soraka
the Starchild
Karthus wins against Soraka 47.17% of the time which is 0.28% lower against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 5.97% less often than would be expected.
The average opponent winrate against Soraka is 47.45%.
Rakan
The Charmer
Karthus wins against Rakan 50.24% of the time which is 1.39% higher against Rakan than the average opponent.
After normalising both champions win rates Karthus wins against Rakan 4.30% less often than would be expected.
The average opponent winrate against Rakan is 48.85%.
Senna
the Redeemer
Karthus wins against Senna 50.41% of the time which is 0.03% higher against Senna than the average opponent.
After normalising both champions win rates Karthus wins against Senna 5.65% less often than would be expected.
The average opponent winrate against Senna is 50.38%.
Bard
the Wandering Caretaker
Karthus wins against Bard 50.82% of the time which is 1.96% higher against Bard than the average opponent.
After normalising both champions win rates Karthus wins against Bard 3.73% less often than would be expected.
The average opponent winrate against Bard is 48.86%.
Janna
the Storm's Fury
Karthus wins against Janna 52.11% of the time which is 4.21% higher against Janna than the average opponent.
After normalising both champions win rates Karthus wins against Janna 1.48% less often than would be expected.
The average opponent winrate against Janna is 47.90%.
Nautilus
the Titan of the Depths
Karthus wins against Nautilus 52.56% of the time which is 2.96% higher against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 2.72% less often than would be expected.
The average opponent winrate against Nautilus is 49.60%.
Thresh
the Chain Warden
Karthus wins against Thresh 52.80% of the time which is 5.03% higher against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 0.66% less often than would be expected.
The average opponent winrate against Thresh is 47.77%.
Nami
the Tidecaller
Karthus wins against Nami 52.90% of the time which is 5.25% higher against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 0.44% less often than would be expected.
The average opponent winrate against Nami is 47.65%.
Alistar
the Minotaur
Karthus wins against Alistar 53.55% of the time which is 4.72% higher against Alistar than the average opponent.
After normalising both champions win rates Karthus wins against Alistar 0.97% less often than would be expected.
The average opponent winrate against Alistar is 48.83%.
Milio
The Gentle Flame
Karthus wins against Milio 55.56% of the time which is 8.42% higher against Milio than the average opponent.
After normalising both champions win rates Karthus wins against Milio 2.73% more often than would be expected.
The average opponent winrate against Milio is 47.14%.
Yuumi
the Magical Cat
Karthus wins against Yuumi 56.82% of the time which is 6.42% higher against Yuumi than the average opponent.
After normalising both champions win rates Karthus wins against Yuumi 0.74% more often than would be expected.
The average opponent winrate against Yuumi is 50.40%.
Lulu
the Fae Sorceress
Karthus wins against Lulu 57.18% of the time which is 9.03% higher against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 3.34% more often than would be expected.
The average opponent winrate against Lulu is 48.15%.
Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 57.47% of the time which is 8.33% higher against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 2.64% more often than would be expected.
The average opponent winrate against Pyke is 49.14%.
Karma
the Enlightened One
Karthus wins against Karma 57.48% of the time which is 8.01% higher against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 2.33% more often than would be expected.
The average opponent winrate against Karma is 49.47%.
Leona
the Radiant Dawn
Karthus wins against Leona 59.04% of the time which is 11.46% higher against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 5.77% more often than would be expected.
The average opponent winrate against Leona is 47.58%.
Rell
the Iron Maiden
Karthus wins against Rell 59.32% of the time which is 11.39% higher against Rell than the average opponent.
After normalising both champions win rates Karthus wins against Rell 5.70% more often than would be expected.
The average opponent winrate against Rell is 47.93%.
Lux
the Lady of Luminosity
Karthus wins against Lux 63.00% of the time which is 12.90% higher against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 7.22% more often than would be expected.
The average opponent winrate against Lux is 50.10%.
Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 67.59% of the time which is 18.26% higher against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 12.58% more often than would be expected.
The average opponent winrate against Blitzcrank is 49.33%.
