

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: 31,333,675
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 top Counters
Karthus middle on Patch 30 is the strongest counter to top champions of Jayce, Malphite & Sett. While Karthus middle is countered most by top champions of Irelia, Dr. Mundo & Renekton. Below is a detailed breakdown of Karthus middle counters against top champions with a minimum of 100 games.


Irelia
the Blade Dancer
Karthus wins against Irelia 43.69% of the time which is 5.15% lower against Irelia than the average opponent.
After normalising both champions win rates Karthus wins against Irelia 3.91% less often than would be expected.
The average opponent winrate against Irelia is 48.84%.


Dr. Mundo
the Madman of Zaun
Karthus wins against Dr. Mundo 46.22% of the time which is 4.14% lower against Dr. Mundo than the average opponent.
After normalising both champions win rates Karthus wins against Dr. Mundo 2.90% less often than would be expected.
The average opponent winrate against Dr. Mundo is 50.36%.


Renekton
the Butcher of the Sands
Karthus wins against Renekton 46.56% of the time which is 3.74% lower against Renekton than the average opponent.
After normalising both champions win rates Karthus wins against Renekton 2.50% less often than would be expected.
The average opponent winrate against Renekton is 50.30%.


Darius
the Hand of Noxus
Karthus wins against Darius 47.01% of the time which is 2.88% lower against Darius than the average opponent.
After normalising both champions win rates Karthus wins against Darius 1.64% less often than would be expected.
The average opponent winrate against Darius is 49.89%.


Jax
Grandmaster at Arms
Karthus wins against Jax 47.13% of the time which is 2.57% lower against Jax than the average opponent.
After normalising both champions win rates Karthus wins against Jax 1.33% less often than would be expected.
The average opponent winrate against Jax is 49.70%.


Aatrox
the Darkin Blade
Karthus wins against Aatrox 47.45% of the time which is 2.93% lower against Aatrox than the average opponent.
After normalising both champions win rates Karthus wins against Aatrox 1.69% less often than would be expected.
The average opponent winrate against Aatrox is 50.38%.


Fiora
the Grand Duelist
Karthus wins against Fiora 49.55% of the time which is 0.78% higher against Fiora than the average opponent.
After normalising both champions win rates Karthus wins against Fiora 2.02% more often than would be expected.
The average opponent winrate against Fiora is 48.77%.


Ambessa
Matriarch of War
Karthus wins against Ambessa 49.55% of the time which is 0.85% lower against Ambessa than the average opponent.
After normalising both champions win rates Karthus wins against Ambessa 0.39% more often than would be expected.
The average opponent winrate against Ambessa is 50.40%.


Mordekaiser
the Iron Revenant
Karthus wins against Mordekaiser 50.00% of the time which is 1.21% higher against Mordekaiser than the average opponent.
After normalising both champions win rates Karthus wins against Mordekaiser 2.45% more often than would be expected.
The average opponent winrate against Mordekaiser is 48.79%.


Sion
The Undead Juggernaut
Karthus wins against Sion 50.46% of the time which is 0.34% higher against Sion than the average opponent.
After normalising both champions win rates Karthus wins against Sion 1.58% more often than would be expected.
The average opponent winrate against Sion is 50.12%.


Sett
the Boss
Karthus wins against Sett 51.03% of the time which is 2.09% higher against Sett than the average opponent.
After normalising both champions win rates Karthus wins against Sett 3.33% more often than would be expected.
The average opponent winrate against Sett is 48.94%.


Malphite
Shard of the Monolith
Karthus wins against Malphite 53.47% of the time which is 5.22% higher against Malphite than the average opponent.
After normalising both champions win rates Karthus wins against Malphite 6.46% more often than would be expected.
The average opponent winrate against Malphite is 48.25%.


Jayce
the Defender of Tomorrow
Karthus wins against Jayce 56.19% of the time which is 4.41% higher against Jayce than the average opponent.
After normalising both champions win rates Karthus wins against Jayce 5.65% more often than would be expected.
The average opponent winrate against Jayce is 51.78%.