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: 24,682,760
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 14.17 is the strongest counter to support champions of Zyra, Pyke & Lux. While Karthus bottom is countered most by support champions of Zilean, Bard & Sona. Below is a detailed breakdown of Karthus bottom counters against support champions with a minimum of 100 games.
Zilean
the Chronokeeper
Karthus wins against Zilean 43.42% of the time which is 5.11% lower against Zilean than the average opponent.
After normalising both champions win rates Karthus wins against Zilean 10.60% less often than would be expected.
The average opponent winrate against Zileanis 48.53%.
Bard
the Wandering Caretaker
Karthus wins against Bard 46.24% of the time which is 2.47% lower against Bard than the average opponent.
After normalising both champions win rates Karthus wins against Bard 7.96% less often than would be expected.
The average opponent winrate against Bardis 48.71%.
Sona
Maven of the Strings
Karthus wins against Sona 47.17% of the time which is 0.32% lower against Sona than the average opponent.
After normalising both champions win rates Karthus wins against Sona 5.81% less often than would be expected.
The average opponent winrate against Sonais 47.49%.
Yuumi
the Magical Cat
Karthus wins against Yuumi 47.35% of the time which is 2.37% lower against Yuumi than the average opponent.
After normalising both champions win rates Karthus wins against Yuumi 7.85% less often than would be expected.
The average opponent winrate against Yuumiis 49.72%.
Taric
the Shield of Valoran
Karthus wins against Taric 47.41% of the time which is 1.35% higher against Taric than the average opponent.
After normalising both champions win rates Karthus wins against Taric 4.13% less often than would be expected.
The average opponent winrate against Taricis 46.06%.
Poppy
Keeper of the Hammer
Karthus wins against Poppy 48.85% of the time which is 3.03% higher against Poppy than the average opponent.
After normalising both champions win rates Karthus wins against Poppy 2.45% less often than would be expected.
The average opponent winrate against Poppyis 45.82%.
Senna
the Redeemer
Karthus wins against Senna 49.39% of the time which is 2.76% higher against Senna than the average opponent.
After normalising both champions win rates Karthus wins against Senna 2.72% less often than would be expected.
The average opponent winrate against Sennais 46.63%.
Janna
the Storm's Fury
Karthus wins against Janna 49.87% of the time which is 3.00% higher against Janna than the average opponent.
After normalising both champions win rates Karthus wins against Janna 2.48% less often than would be expected.
The average opponent winrate against Jannais 46.87%.
Nami
the Tidecaller
Karthus wins against Nami 50.44% of the time which is 3.94% higher against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 1.54% less often than would be expected.
The average opponent winrate against Namiis 46.50%.
Soraka
the Starchild
Karthus wins against Soraka 50.56% of the time which is 2.66% higher against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 2.83% less often than would be expected.
The average opponent winrate against Sorakais 47.90%.
Milio
The Gentle Flame
Karthus wins against Milio 51.28% of the time which is 3.54% higher against Milio than the average opponent.
After normalising both champions win rates Karthus wins against Milio 1.95% less often than would be expected.
The average opponent winrate against Miliois 47.74%.
Rakan
The Charmer
Karthus wins against Rakan 51.75% of the time which is 2.39% higher against Rakan than the average opponent.
After normalising both champions win rates Karthus wins against Rakan 3.09% less often than would be expected.
The average opponent winrate against Rakanis 49.36%.
Karma
the Enlightened One
Karthus wins against Karma 52.76% of the time which is 4.10% higher against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 1.39% less often than would be expected.
The average opponent winrate against Karmais 48.66%.
Alistar
the Minotaur
Karthus wins against Alistar 55.02% of the time which is 5.26% higher against Alistar than the average opponent.
After normalising both champions win rates Karthus wins against Alistar 0.22% less often than would be expected.
The average opponent winrate against Alistaris 49.76%.
Braum
the Heart of the Freljord
Karthus wins against Braum 55.04% of the time which is 6.14% higher against Braum than the average opponent.
After normalising both champions win rates Karthus wins against Braum 0.66% more often than would be expected.
The average opponent winrate against Braumis 48.90%.
Lulu
the Fae Sorceress
Karthus wins against Lulu 55.56% of the time which is 6.96% higher against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 1.47% more often than would be expected.
The average opponent winrate against Luluis 48.60%.
Leona
the Radiant Dawn
Karthus wins against Leona 55.88% of the time which is 7.77% higher against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 2.28% more often than would be expected.
The average opponent winrate against Leonais 48.11%.
Vel'Koz
the Eye of the Void
Karthus wins against Vel'Koz 56.52% of the time which is 8.84% higher against Vel'Koz than the average opponent.
After normalising both champions win rates Karthus wins against Vel'Koz 3.35% more often than would be expected.
The average opponent winrate against Vel'Kozis 47.68%.
Blitzcrank
the Great Steam Golem
Karthus wins against Blitzcrank 56.63% of the time which is 7.55% higher against Blitzcrank than the average opponent.
After normalising both champions win rates Karthus wins against Blitzcrank 2.07% more often than would be expected.
The average opponent winrate against Blitzcrankis 49.08%.
Rell
the Iron Maiden
Karthus wins against Rell 56.94% of the time which is 8.46% higher against Rell than the average opponent.
After normalising both champions win rates Karthus wins against Rell 2.97% more often than would be expected.
The average opponent winrate against Rellis 48.48%.
Morgana
the Fallen
Karthus wins against Morgana 56.95% of the time which is 8.31% higher against Morgana than the average opponent.
After normalising both champions win rates Karthus wins against Morgana 2.82% more often than would be expected.
The average opponent winrate against Morganais 48.64%.
Thresh
the Chain Warden
Karthus wins against Thresh 57.05% of the time which is 8.32% higher against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 2.83% more often than would be expected.
The average opponent winrate against Threshis 48.73%.
Xerath
the Magus Ascendant
Karthus wins against Xerath 57.82% of the time which is 10.51% higher against Xerath than the average opponent.
After normalising both champions win rates Karthus wins against Xerath 5.02% more often than would be expected.
The average opponent winrate against Xerathis 47.31%.
Seraphine
the Starry-Eyed Songstress
Karthus wins against Seraphine 58.46% of the time which is 9.76% higher against Seraphine than the average opponent.
After normalising both champions win rates Karthus wins against Seraphine 4.27% more often than would be expected.
The average opponent winrate against Seraphineis 48.70%.
Nautilus
the Titan of the Depths
Karthus wins against Nautilus 58.73% of the time which is 8.02% higher against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 2.55% more often than would be expected.
The average opponent winrate against Nautilusis 50.71%.
Lux
the Lady of Luminosity
Karthus wins against Lux 59.09% of the time which is 10.05% higher against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 4.57% more often than would be expected.
The average opponent winrate against Luxis 49.04%.
Pyke
the Bloodharbor Ripper
Karthus wins against Pyke 59.52% of the time which is 11.97% higher against Pyke than the average opponent.
After normalising both champions win rates Karthus wins against Pyke 6.48% more often than would be expected.
The average opponent winrate against Pykeis 47.55%.
Zyra
Rise of the Thorns
Karthus wins against Zyra 60.90% of the time which is 12.67% higher against Zyra than the average opponent.
After normalising both champions win rates Karthus wins against Zyra 7.18% more often than would be expected.
The average opponent winrate against Zyrais 48.23%.