

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: 37,584,270
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 support Counters
Karthus top on Patch 15.16 is the strongest counter to support champions of Lux, Leona & Morgana. While Karthus top is countered most by support champions of Lulu, Thresh & Nautilus. Below is a detailed breakdown of Karthus top counters against support champions with a minimum of 100 games.


Lulu
the Fae Sorceress
Karthus wins against Lulu 43.08% of the time which is 7.09% lower against Lulu than the average opponent.
After normalising both champions win rates Karthus wins against Lulu 3.18% less often than would be expected.
The average opponent winrate against Lulu is 50.17%.


Thresh
the Chain Warden
Karthus wins against Thresh 43.55% of the time which is 6.09% lower against Thresh than the average opponent.
After normalising both champions win rates Karthus wins against Thresh 2.18% less often than would be expected.
The average opponent winrate against Thresh is 49.64%.


Nautilus
the Titan of the Depths
Karthus wins against Nautilus 44.12% of the time which is 6.60% lower against Nautilus than the average opponent.
After normalising both champions win rates Karthus wins against Nautilus 2.69% less often than would be expected.
The average opponent winrate against Nautilus is 50.72%.


Morgana
the Fallen
Karthus wins against Morgana 45.05% of the time which is 3.69% lower against Morgana than the average opponent.
After normalising both champions win rates Karthus wins against Morgana 0.21% more often than would be expected.
The average opponent winrate against Morgana is 48.74%.


Leona
the Radiant Dawn
Karthus wins against Leona 48.04% of the time which is 0.80% lower against Leona than the average opponent.
After normalising both champions win rates Karthus wins against Leona 3.10% more often than would be expected.
The average opponent winrate against Leona is 48.84%.


Lux
the Lady of Luminosity
Karthus wins against Lux 51.80% of the time which is 1.85% higher against Lux than the average opponent.
After normalising both champions win rates Karthus wins against Lux 5.76% more often than would be expected.
The average opponent winrate against Lux is 49.95%.