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: 12,746,366
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.
Riven Counters
Riven middle vs middle Counters
Presently there is insufficent games played by Riven middle on Patch 14.11 to determine the strongest middle counters. A matchup requires a minimum of 100 games to be displayed.
Sylas
the Unshackled
Riven wins against Sylas 50.00% of the time which is 2.82% higher against Sylas than the average opponent.
After normalising both champions win rates Riven wins against Sylas 2.83% less often than would be expected.
The average opponent winrate against Sylasis 47.18%.
Zed
the Master of Shadows
Riven wins against Zed 55.88% of the time which is 6.60% higher against Zed than the average opponent.
After normalising both champions win rates Riven wins against Zed 0.95% more often than would be expected.
The average opponent winrate against Zedis 49.28%.
Katarina
the Sinister Blade
Riven wins against Katarina 58.91% of the time which is 10.07% higher against Katarina than the average opponent.
After normalising both champions win rates Riven wins against Katarina 4.42% more often than would be expected.
The average opponent winrate against Katarinais 48.84%.
Yasuo
the Unforgiven
Riven wins against Yasuo 60.54% of the time which is 11.40% higher against Yasuo than the average opponent.
After normalising both champions win rates Riven wins against Yasuo 5.75% more often than would be expected.
The average opponent winrate against Yasuois 49.14%.