

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: 208,135,510
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 top vs top Counters
Karthus top on Patch 30 is the strongest counter to top champions of Heimerdinger, Akali & Rumble. While Karthus top is countered most by top champions of Ambessa, Sylas & Irelia. Below is a detailed breakdown of Karthus top counters against top champions with a minimum of 100 games.


Ambessa
Matriarch of War
Karthus wins against Ambessa 39.57% of the time which is 11.89% lower against Ambessa than the average opponent.
After normalising both champions win rates Karthus wins against Ambessa 7.86% less often than would be expected.
The average opponent winrate against Ambessa is 51.46%.


Sylas
the Unshackled
Karthus wins against Sylas 39.62% of the time which is 11.09% lower against Sylas than the average opponent.
After normalising both champions win rates Karthus wins against Sylas 7.07% less often than would be expected.
The average opponent winrate against Sylas is 50.71%.


Irelia
the Blade Dancer
Karthus wins against Irelia 40.41% of the time which is 9.09% lower against Irelia than the average opponent.
After normalising both champions win rates Karthus wins against Irelia 5.07% less often than would be expected.
The average opponent winrate against Irelia is 49.50%.


Camille
the Steel Shadow
Karthus wins against Camille 40.43% of the time which is 10.59% lower against Camille than the average opponent.
After normalising both champions win rates Karthus wins against Camille 6.57% less often than would be expected.
The average opponent winrate against Camille is 51.02%.


Tryndamere
the Barbarian King
Karthus wins against Tryndamere 40.44% of the time which is 9.63% lower against Tryndamere than the average opponent.
After normalising both champions win rates Karthus wins against Tryndamere 5.61% less often than would be expected.
The average opponent winrate against Tryndamere is 50.07%.


Ornn
The Fire below the Mountain
Karthus wins against Ornn 40.87% of the time which is 7.93% lower against Ornn than the average opponent.
After normalising both champions win rates Karthus wins against Ornn 3.92% less often than would be expected.
The average opponent winrate against Ornn is 48.80%.


Trundle
the Troll King
Karthus wins against Trundle 40.98% of the time which is 8.80% lower against Trundle than the average opponent.
After normalising both champions win rates Karthus wins against Trundle 4.78% less often than would be expected.
The average opponent winrate against Trundle is 49.78%.


Yorick
Shepherd of Souls
Karthus wins against Yorick 41.21% of the time which is 7.09% lower against Yorick than the average opponent.
After normalising both champions win rates Karthus wins against Yorick 3.09% less often than would be expected.
The average opponent winrate against Yorick is 48.30%.


Yasuo
the Unforgiven
Karthus wins against Yasuo 41.34% of the time which is 10.24% lower against Yasuo than the average opponent.
After normalising both champions win rates Karthus wins against Yasuo 6.21% less often than would be expected.
The average opponent winrate against Yasuo is 51.58%.


Nasus
the Curator of the Sands
Karthus wins against Nasus 41.49% of the time which is 7.61% lower against Nasus than the average opponent.
After normalising both champions win rates Karthus wins against Nasus 3.60% less often than would be expected.
The average opponent winrate against Nasus is 49.10%.


Sion
The Undead Juggernaut
Karthus wins against Sion 41.65% of the time which is 7.72% lower against Sion than the average opponent.
After normalising both champions win rates Karthus wins against Sion 3.70% less often than would be expected.
The average opponent winrate against Sion is 49.37%.


Riven
the Exile
Karthus wins against Riven 41.98% of the time which is 9.74% lower against Riven than the average opponent.
After normalising both champions win rates Karthus wins against Riven 5.71% less often than would be expected.
The average opponent winrate against Riven is 51.72%.


Aatrox
the Darkin Blade
Karthus wins against Aatrox 42.05% of the time which is 9.00% lower against Aatrox than the average opponent.
After normalising both champions win rates Karthus wins against Aatrox 4.98% less often than would be expected.
The average opponent winrate against Aatrox is 51.05%.


Garen
The Might of Demacia
Karthus wins against Garen 42.19% of the time which is 6.71% lower against Garen than the average opponent.
After normalising both champions win rates Karthus wins against Garen 2.70% less often than would be expected.
The average opponent winrate against Garen is 48.90%.


Singed
the Mad Chemist
Karthus wins against Singed 42.50% of the time which is 5.47% lower against Singed than the average opponent.
After normalising both champions win rates Karthus wins against Singed 1.47% less often than would be expected.
The average opponent winrate against Singed is 47.97%.


Yone
the Unforgotten
Karthus wins against Yone 43.05% of the time which is 8.73% lower against Yone than the average opponent.
After normalising both champions win rates Karthus wins against Yone 4.70% less often than would be expected.
The average opponent winrate against Yone is 51.78%.


Sett
the Boss
Karthus wins against Sett 43.15% of the time which is 4.71% lower against Sett than the average opponent.
After normalising both champions win rates Karthus wins against Sett 0.71% less often than would be expected.
The average opponent winrate against Sett is 47.86%.


Olaf
the Berserker
Karthus wins against Olaf 43.24% of the time which is 6.47% lower against Olaf than the average opponent.
After normalising both champions win rates Karthus wins against Olaf 2.45% less often than would be expected.
The average opponent winrate against Olaf is 49.71%.


Kled
the Cantankerous Cavalier
Karthus wins against Kled 43.44% of the time which is 6.08% lower against Kled than the average opponent.
After normalising both champions win rates Karthus wins against Kled 2.06% less often than would be expected.
The average opponent winrate against Kled is 49.52%.


Kennen
the Heart of the Tempest
Karthus wins against Kennen 43.60% of the time which is 6.58% lower against Kennen than the average opponent.
After normalising both champions win rates Karthus wins against Kennen 2.56% less often than would be expected.
The average opponent winrate against Kennen is 50.18%.


Dr. Mundo
the Madman of Zaun
Karthus wins against Dr. Mundo 43.73% of the time which is 5.34% lower against Dr. Mundo than the average opponent.
After normalising both champions win rates Karthus wins against Dr. Mundo 1.33% less often than would be expected.
The average opponent winrate against Dr. Mundo is 49.07%.


Kayle
the Righteous
Karthus wins against Kayle 44.63% of the time which is 3.73% lower against Kayle than the average opponent.
After normalising both champions win rates Karthus wins against Kayle 0.28% more often than would be expected.
The average opponent winrate against Kayle is 48.36%.


Volibear
the Relentless Storm
Karthus wins against Volibear 44.68% of the time which is 5.61% lower against Volibear than the average opponent.
After normalising both champions win rates Karthus wins against Volibear 1.59% less often than would be expected.
The average opponent winrate against Volibear is 50.29%.


Pantheon
the Unbreakable Spear
Karthus wins against Pantheon 44.74% of the time which is 5.74% lower against Pantheon than the average opponent.
After normalising both champions win rates Karthus wins against Pantheon 1.72% less often than would be expected.
The average opponent winrate against Pantheon is 50.48%.


Jax
Grandmaster at Arms
Karthus wins against Jax 44.98% of the time which is 5.10% lower against Jax than the average opponent.
After normalising both champions win rates Karthus wins against Jax 1.08% less often than would be expected.
The average opponent winrate against Jax is 50.08%.


Illaoi
the Kraken Priestess
Karthus wins against Illaoi 45.13% of the time which is 4.77% lower against Illaoi than the average opponent.
After normalising both champions win rates Karthus wins against Illaoi 0.75% less often than would be expected.
The average opponent winrate against Illaoi is 49.90%.


Quinn
Demacia's Wings
Karthus wins against Quinn 45.60% of the time which is 3.23% lower against Quinn than the average opponent.
After normalising both champions win rates Karthus wins against Quinn 0.78% more often than would be expected.
The average opponent winrate against Quinn is 48.83%.


Shen
the Eye of Twilight
Karthus wins against Shen 45.86% of the time which is 3.57% lower against Shen than the average opponent.
After normalising both champions win rates Karthus wins against Shen 0.45% more often than would be expected.
The average opponent winrate against Shen is 49.43%.


Fiora
the Grand Duelist
Karthus wins against Fiora 46.10% of the time which is 3.72% lower against Fiora than the average opponent.
After normalising both champions win rates Karthus wins against Fiora 0.30% more often than would be expected.
The average opponent winrate against Fiora is 49.82%.


Mordekaiser
the Iron Revenant
Karthus wins against Mordekaiser 46.15% of the time which is 1.78% lower against Mordekaiser than the average opponent.
After normalising both champions win rates Karthus wins against Mordekaiser 2.22% more often than would be expected.
The average opponent winrate against Mordekaiser is 47.93%.


Urgot
the Dreadnought
Karthus wins against Urgot 46.19% of the time which is 2.03% lower against Urgot than the average opponent.
After normalising both champions win rates Karthus wins against Urgot 1.97% more often than would be expected.
The average opponent winrate against Urgot is 48.22%.


Vladimir
the Crimson Reaper
Karthus wins against Vladimir 46.24% of the time which is 4.18% lower against Vladimir than the average opponent.
After normalising both champions win rates Karthus wins against Vladimir 0.16% less often than would be expected.
The average opponent winrate against Vladimir is 50.42%.


Warwick
the Uncaged Wrath of Zaun
Karthus wins against Warwick 46.50% of the time which is 1.05% lower against Warwick than the average opponent.
After normalising both champions win rates Karthus wins against Warwick 2.94% more often than would be expected.
The average opponent winrate against Warwick is 47.55%.


Vayne
the Night Hunter
Karthus wins against Vayne 47.62% of the time which is 2.32% lower against Vayne than the average opponent.
After normalising both champions win rates Karthus wins against Vayne 1.70% more often than would be expected.
The average opponent winrate against Vayne is 49.94%.


Cho'Gath
the Terror of the Void
Karthus wins against Cho'Gath 47.87% of the time which is 1.11% lower against Cho'Gath than the average opponent.
After normalising both champions win rates Karthus wins against Cho'Gath 2.90% more often than would be expected.
The average opponent winrate against Cho'Gath is 48.98%.


Renekton
the Butcher of the Sands
Karthus wins against Renekton 48.12% of the time which is 1.86% lower against Renekton than the average opponent.
After normalising both champions win rates Karthus wins against Renekton 2.16% more often than would be expected.
The average opponent winrate against Renekton is 49.98%.


Darius
the Hand of Noxus
Karthus wins against Darius 48.15% of the time which is 2.81% lower against Darius than the average opponent.
After normalising both champions win rates Karthus wins against Darius 1.21% more often than would be expected.
The average opponent winrate against Darius is 50.96%.


Gnar
the Missing Link
Karthus wins against Gnar 48.48% of the time which is 3.10% lower against Gnar than the average opponent.
After normalising both champions win rates Karthus wins against Gnar 0.93% more often than would be expected.
The average opponent winrate against Gnar is 51.58%.


Malphite
Shard of the Monolith
Karthus wins against Malphite 48.48% of the time which is 0.01% lower against Malphite than the average opponent.
After normalising both champions win rates Karthus wins against Malphite 4.00% more often than would be expected.
The average opponent winrate against Malphite is 48.49%.


Gangplank
the Saltwater Scourge
Karthus wins against Gangplank 50.00% of the time which is 0.96% lower against Gangplank than the average opponent.
After normalising both champions win rates Karthus wins against Gangplank 3.06% more often than would be expected.
The average opponent winrate against Gangplank is 50.96%.


Gragas
the Rabble Rouser
Karthus wins against Gragas 50.22% of the time which is 1.03% lower against Gragas than the average opponent.
After normalising both champions win rates Karthus wins against Gragas 3.00% more often than would be expected.
The average opponent winrate against Gragas is 51.25%.


Jayce
the Defender of Tomorrow
Karthus wins against Jayce 50.36% of the time which is 1.99% lower against Jayce than the average opponent.
After normalising both champions win rates Karthus wins against Jayce 2.04% more often than would be expected.
The average opponent winrate against Jayce is 52.35%.


Teemo
the Swift Scout
Karthus wins against Teemo 50.81% of the time which is 2.21% higher against Teemo than the average opponent.
After normalising both champions win rates Karthus wins against Teemo 6.22% more often than would be expected.
The average opponent winrate against Teemo is 48.60%.


K'Sante
the Pride of Nazumah
Karthus wins against K'Sante 51.63% of the time which is 1.94% lower against K'Sante than the average opponent.
After normalising both champions win rates Karthus wins against K'Sante 2.08% more often than would be expected.
The average opponent winrate against K'Sante is 53.57%.


Gwen
The Hallowed Seamstress
Karthus wins against Gwen 52.99% of the time which is 0.36% higher against Gwen than the average opponent.
After normalising both champions win rates Karthus wins against Gwen 4.39% more often than would be expected.
The average opponent winrate against Gwen is 52.63%.


Rumble
the Mechanized Menace
Karthus wins against Rumble 55.47% of the time which is 3.13% higher against Rumble than the average opponent.
After normalising both champions win rates Karthus wins against Rumble 7.16% more often than would be expected.
The average opponent winrate against Rumble is 52.34%.


Akali
the Rogue Assassin
Karthus wins against Akali 57.14% of the time which is 7.38% higher against Akali than the average opponent.
After normalising both champions win rates Karthus wins against Akali 11.40% more often than would be expected.
The average opponent winrate against Akali is 49.76%.


Heimerdinger
the Revered Inventor
Karthus wins against Heimerdinger 57.31% of the time which is 8.26% higher against Heimerdinger than the average opponent.
After normalising both champions win rates Karthus wins against Heimerdinger 12.27% more often than would be expected.
The average opponent winrate against Heimerdinger is 49.05%.