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: 10,509,434
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 jungle Counters
Presently there is insufficent games played by Riven middle on Patch 14.24 to determine the strongest jungle counters. A matchup requires a minimum of 100 games to be displayed.
Viego
El Rey Arruinado
Riven wins against Viego 47.69% of the time which is 1.06% lower against Viego than the average opponent.
After normalising both champions win rates Riven wins against Viego 6.77% less often than would be expected.
The average opponent winrate against Viegois 48.75%.
Kha'Zix
el Saqueador del Vacío
Riven wins against Kha'Zix 50.94% of the time which is 3.36% higher against Kha'Zix than the average opponent.
After normalising both champions win rates Riven wins against Kha'Zix 2.35% less often than would be expected.
The average opponent winrate against Kha'Zixis 47.58%.
Graves
el Forajido
Riven wins against Graves 54.23% of the time which is 5.65% higher against Graves than the average opponent.
After normalising both champions win rates Riven wins against Graves 0.06% less often than would be expected.
The average opponent winrate against Gravesis 48.58%.
Lee Sin
el Monje Ciego
Riven wins against Lee Sin 58.96% of the time which is 9.70% higher against Lee Sin than the average opponent.
After normalising both champions win rates Riven wins against Lee Sin 4.00% more often than would be expected.
The average opponent winrate against Lee Sinis 49.26%.