

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: 7,470,562
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 bottom vs top Counters
Presently there is insufficent games played by Karthus bottom on Patch 7 to determine the strongest top counters. A matchup requires a minimum of 100 games to be displayed.


Riven
the Exile
Karthus wins against Riven 45.00% of the time which is 2.62% lower against Riven than the average opponent.
After normalising both champions win rates Karthus wins against Riven 7.77% less often than would be expected.
The average opponent winrate against Riven is 47.62%.


Aatrox
the Darkin Blade
Karthus wins against Aatrox 53.10% of the time which is 3.66% higher against Aatrox than the average opponent.
After normalising both champions win rates Karthus wins against Aatrox 1.48% less often than would be expected.
The average opponent winrate against Aatrox is 49.44%.


Sett
the Boss
Karthus wins against Sett 55.34% of the time which is 8.37% higher against Sett than the average opponent.
After normalising both champions win rates Karthus wins against Sett 3.23% more often than would be expected.
The average opponent winrate against Sett is 46.97%.


Dr. Mundo
the Madman of Zaun
Karthus wins against Dr. Mundo 56.20% of the time which is 6.82% higher against Dr. Mundo than the average opponent.
After normalising both champions win rates Karthus wins against Dr. Mundo 1.68% more often than would be expected.
The average opponent winrate against Dr. Mundo is 49.38%.