

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: 22,519,253
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 support Counters
Karthus middle on Patch 15.16 is the strongest counter to support champions of Lulu, Nautilus & Leona. While Karthus middle is countered most by support champions of Soraka, Milio & Thresh. Below is a detailed breakdown of Karthus middle counters against support champions with a minimum of 100 games.


Soraka
the Starchild
Karthus wins against Soraka 40.20% of the time which is 7.08% lower against Soraka than the average opponent.
After normalising both champions win rates Karthus wins against Soraka 7.95% less often than would be expected.
The average opponent winrate against Soraka is 47.28%.


Milio
The Gentle Flame
Karthus wins against Milio 44.76% of the time which is 1.71% lower against Milio than the average opponent.
After normalising both champions win rates Karthus wins against Milio 2.58% less often than would be expected.
The average opponent winrate against Milio is 46.47%.


Thresh
the Chain Warden
Karthus wins against Thresh 49.47% of the time which is 1.30% higher against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 0.43% more often than would be expected.
The average opponent winrate against Thresh is 48.17%.


Nami
the Tidecaller
Karthus wins against Nami 50.00% of the time which is 3.04% higher against Nami than the average opponent.
After normalising both champions win rates Karthus wins against Nami 2.17% more often than would be expected.
The average opponent winrate against Nami is 46.96%.


Lux
the Lady of Luminosity
Karthus wins against Lux 50.00% of the time which is 0.62% higher against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 0.25% less often than would be expected.
The average opponent winrate against Lux is 49.38%.


Karma
the Enlightened One
Karthus wins against Karma 51.43% of the time which is 2.64% higher against Karma than the average opponent.
After normalising both champions win rates Karthus wins against Karma 1.77% more often than would be expected.
The average opponent winrate against Karma is 48.79%.


Leona
the Radiant Dawn
Karthus wins against Leona 51.49% of the time which is 3.82% higher against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 2.95% more often than would be expected.
The average opponent winrate against Leona is 47.67%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 51.54% of the time which is 2.09% higher against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 1.22% more often than would be expected.
The average opponent winrate against Nautilus is 49.45%.


Lulu
the Fae Sorceress
Karthus wins against Lulu 53.33% of the time which is 4.31% higher against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 3.44% more often than would be expected.
The average opponent winrate against Lulu is 49.02%.