

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.
Platinum+ Champions Analysed: 60,483,453
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 Jayce, Teemo & Darius. While Karthus top is countered most by top champions of Ambessa, Sion & Aatrox. 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 31.78% of the time which is 18.77% lower against Ambessa than the average opponent.
After normalising both champions win rates Karthus wins against Ambessa 13.85% less often than would be expected.
The average opponent winrate against Ambessa is 50.55%.


Sion
The Undead Juggernaut
Karthus wins against Sion 34.78% of the time which is 14.85% lower against Sion than the average opponent.
After normalising both champions win rates Karthus wins against Sion 9.94% less often than would be expected.
The average opponent winrate against Sion is 49.63%.


Aatrox
the Darkin Blade
Karthus wins against Aatrox 37.50% of the time which is 12.78% lower against Aatrox than the average opponent.
After normalising both champions win rates Karthus wins against Aatrox 7.87% less often than would be expected.
The average opponent winrate against Aatrox is 50.28%.


Sett
the Boss
Karthus wins against Sett 37.96% of the time which is 10.31% lower against Sett than the average opponent.
After normalising both champions win rates Karthus wins against Sett 5.43% less often than would be expected.
The average opponent winrate against Sett is 48.27%.


Irelia
the Blade Dancer
Karthus wins against Irelia 41.18% of the time which is 7.59% lower against Irelia than the average opponent.
After normalising both champions win rates Karthus wins against Irelia 2.70% less often than would be expected.
The average opponent winrate against Irelia is 48.77%.


Mordekaiser
the Iron Revenant
Karthus wins against Mordekaiser 41.90% of the time which is 6.07% lower against Mordekaiser than the average opponent.
After normalising both champions win rates Karthus wins against Mordekaiser 1.19% less often than would be expected.
The average opponent winrate against Mordekaiser is 47.97%.


Jax
Grandmaster at Arms
Karthus wins against Jax 43.45% of the time which is 6.21% lower against Jax than the average opponent.
After normalising both champions win rates Karthus wins against Jax 1.30% less often than would be expected.
The average opponent winrate against Jax is 49.66%.


Darius
the Hand of Noxus
Karthus wins against Darius 46.32% of the time which is 3.44% lower against Darius than the average opponent.
After normalising both champions win rates Karthus wins against Darius 1.47% more often than would be expected.
The average opponent winrate against Darius is 49.76%.


Teemo
the Swift Scout
Karthus wins against Teemo 51.03% of the time which is 2.57% higher against Teemo than the average opponent.
After normalising both champions win rates Karthus wins against Teemo 7.46% more often than would be expected.
The average opponent winrate against Teemo is 48.46%.


Jayce
the Defender of Tomorrow
Karthus wins against Jayce 52.38% of the time which is 0.59% higher against Jayce than the average opponent.
After normalising both champions win rates Karthus wins against Jayce 5.51% more often than would be expected.
The average opponent winrate against Jayce is 51.79%.