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: 28,734,308
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 middle Counters
Presently there is insufficent games played by Karthus top on Patch 14.8 to determine the strongest middle counters. A matchup requires a minimum of 100 games to be displayed.
Ahri
La Mujer Zorro de nueve Colas
Karthus wins against Ahri 46.99% of the time which is 0.05% higher against Ahri than the average opponent.
After normalising both champions win rates Karthus wins against Ahri 2.28% less often than would be expected.
The average opponent winrate against Ahriis 46.94%.
Katarina
La Cuchilla Siniestra
Karthus wins against Katarina 49.04% of the time which is 0.90% higher against Katarina than the average opponent.
After normalising both champions win rates Karthus wins against Katarina 1.43% less often than would be expected.
The average opponent winrate against Katarinais 48.14%.
Yasuo
La Espada sin Honor
Karthus wins against Yasuo 54.00% of the time which is 4.59% higher against Yasuo than the average opponent.
After normalising both champions win rates Karthus wins against Yasuo 2.26% more often than would be expected.
The average opponent winrate against Yasuois 49.41%.