

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.
Gold+ Champions Analysed: 97,938,029
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.


Amumu Counters
Amumu jungle vs support Counters
Amumu jungle on Patch 30 is the strongest counter to support champions of Ezreal, Miss Fortune & Caitlyn. While Amumu jungle is countered most by support champions of Kennen, Taliyah & Vel'Koz. Below is a detailed breakdown of Amumu jungle counters against support champions with a minimum of 100 games.


Kennen
the Heart of the Tempest
Amumu wins against Kennen 44.31% of the time which is 5.89% lower against Kennen than the average opponent.
After normalising both champions win rates Amumu wins against Kennen 6.78% less often than would be expected.
The average opponent winrate against Kennen is 50.20%.


Taliyah
the Stoneweaver
Amumu wins against Taliyah 45.39% of the time which is 6.23% lower against Taliyah than the average opponent.
After normalising both champions win rates Amumu wins against Taliyah 7.12% less often than would be expected.
The average opponent winrate against Taliyah is 51.62%.


Vel'Koz
the Eye of the Void
Amumu wins against Vel'Koz 46.56% of the time which is 2.17% lower against Vel'Koz than the average opponent.
After normalising both champions win rates Amumu wins against Vel'Koz 3.06% less often than would be expected.
The average opponent winrate against Vel'Koz is 48.73%.


Milio
The Gentle Flame
Amumu wins against Milio 46.61% of the time which is 0.94% lower against Milio than the average opponent.
After normalising both champions win rates Amumu wins against Milio 1.83% less often than would be expected.
The average opponent winrate against Milio is 47.55%.


Zilean
the Chronokeeper
Amumu wins against Zilean 46.91% of the time which is 1.55% lower against Zilean than the average opponent.
After normalising both champions win rates Amumu wins against Zilean 2.44% less often than would be expected.
The average opponent winrate against Zilean is 48.46%.


Ekko
the Boy Who Shattered Time
Amumu wins against Ekko 47.00% of the time which is 6.45% lower against Ekko than the average opponent.
After normalising both champions win rates Amumu wins against Ekko 7.33% less often than would be expected.
The average opponent winrate against Ekko is 53.45%.


Zac
the Secret Weapon
Amumu wins against Zac 47.54% of the time which is 2.97% lower against Zac than the average opponent.
After normalising both champions win rates Amumu wins against Zac 3.86% less often than would be expected.
The average opponent winrate against Zac is 50.51%.


Shaco
the Demon Jester
Amumu wins against Shaco 47.69% of the time which is 2.26% lower against Shaco than the average opponent.
After normalising both champions win rates Amumu wins against Shaco 3.15% less often than would be expected.
The average opponent winrate against Shaco is 49.95%.


Morgana
the Fallen
Amumu wins against Morgana 48.31% of the time which is 0.78% lower against Morgana than the average opponent.
After normalising both champions win rates Amumu wins against Morgana 1.67% less often than would be expected.
The average opponent winrate against Morgana is 49.09%.


Nami
the Tidecaller
Amumu wins against Nami 48.39% of the time which is 0.48% higher against Nami than the average opponent.
After normalising both champions win rates Amumu wins against Nami 0.41% less often than would be expected.
The average opponent winrate against Nami is 47.91%.


Sona
Maven of the Strings
Amumu wins against Sona 48.59% of the time which is 1.15% higher against Sona than the average opponent.
After normalising both champions win rates Amumu wins against Sona 0.26% more often than would be expected.
The average opponent winrate against Sona is 47.44%.


Quinn
Demacia's Wings
Amumu wins against Quinn 48.61% of the time which is 1.54% lower against Quinn than the average opponent.
After normalising both champions win rates Amumu wins against Quinn 2.43% less often than would be expected.
The average opponent winrate against Quinn is 50.15%.


Taric
the Shield of Valoran
Amumu wins against Taric 48.75% of the time which is 0.93% higher against Taric than the average opponent.
After normalising both champions win rates Amumu wins against Taric 0.04% more often than would be expected.
The average opponent winrate against Taric is 47.82%.


Shen
the Eye of Twilight
Amumu wins against Shen 49.35% of the time which is 1.23% lower against Shen than the average opponent.
After normalising both champions win rates Amumu wins against Shen 2.12% less often than would be expected.
The average opponent winrate against Shen is 50.58%.


Janna
the Storm's Fury
Amumu wins against Janna 49.39% of the time which is 1.01% higher against Janna than the average opponent.
After normalising both champions win rates Amumu wins against Janna 0.12% more often than would be expected.
The average opponent winrate against Janna is 48.38%.


Soraka
the Starchild
Amumu wins against Soraka 49.40% of the time which is 1.27% higher against Soraka than the average opponent.
After normalising both champions win rates Amumu wins against Soraka 0.38% more often than would be expected.
The average opponent winrate against Soraka is 48.13%.


LeBlanc
the Deceiver
Amumu wins against LeBlanc 49.50% of the time which is 0.05% lower against LeBlanc than the average opponent.
After normalising both champions win rates Amumu wins against LeBlanc 0.94% less often than would be expected.
The average opponent winrate against LeBlanc is 49.55%.


Elise
the Spider Queen
Amumu wins against Elise 49.52% of the time which is 0.89% higher against Elise than the average opponent.
After normalising both champions win rates Amumu wins against Elise 0.00% less often than would be expected.
The average opponent winrate against Elise is 48.63%.


Karma
the Enlightened One
Amumu wins against Karma 49.55% of the time which is 0.51% lower against Karma than the average opponent.
After normalising both champions win rates Amumu wins against Karma 1.40% less often than would be expected.
The average opponent winrate against Karma is 50.06%.


Xerath
the Magus Ascendant
Amumu wins against Xerath 49.56% of the time which is 0.35% lower against Xerath than the average opponent.
After normalising both champions win rates Amumu wins against Xerath 1.24% less often than would be expected.
The average opponent winrate against Xerath is 49.91%.


Trundle
the Troll King
Amumu wins against Trundle 49.59% of the time which is 4.34% lower against Trundle than the average opponent.
After normalising both champions win rates Amumu wins against Trundle 5.22% less often than would be expected.
The average opponent winrate against Trundle is 53.93%.


Galio
the Colossus
Amumu wins against Galio 50.08% of the time which is 0.19% higher against Galio than the average opponent.
After normalising both champions win rates Amumu wins against Galio 0.70% less often than would be expected.
The average opponent winrate against Galio is 49.89%.


Sion
The Undead Juggernaut
Amumu wins against Sion 50.12% of the time which is 1.38% lower against Sion than the average opponent.
After normalising both champions win rates Amumu wins against Sion 2.27% less often than would be expected.
The average opponent winrate against Sion is 51.50%.


Renata Glasc
the Chem-Baroness
Amumu wins against Renata Glasc 50.17% of the time which is 0.38% higher against Renata Glasc than the average opponent.
After normalising both champions win rates Amumu wins against Renata Glasc 0.51% less often than would be expected.
The average opponent winrate against Renata Glasc is 49.79%.


Teemo
the Swift Scout
Amumu wins against Teemo 50.24% of the time which is 1.82% higher against Teemo than the average opponent.
After normalising both champions win rates Amumu wins against Teemo 0.93% more often than would be expected.
The average opponent winrate against Teemo is 48.42%.


Braum
the Heart of the Freljord
Amumu wins against Braum 50.30% of the time which is 1.44% higher against Braum than the average opponent.
After normalising both champions win rates Amumu wins against Braum 0.55% more often than would be expected.
The average opponent winrate against Braum is 48.86%.


Sylas
the Unshackled
Amumu wins against Sylas 50.32% of the time which is 0.82% lower against Sylas than the average opponent.
After normalising both champions win rates Amumu wins against Sylas 1.71% less often than would be expected.
The average opponent winrate against Sylas is 51.14%.


Fiddlesticks
the Ancient Fear
Amumu wins against Fiddlesticks 50.33% of the time which is 1.59% higher against Fiddlesticks than the average opponent.
After normalising both champions win rates Amumu wins against Fiddlesticks 0.70% more often than would be expected.
The average opponent winrate against Fiddlesticks is 48.74%.


Ornn
The Fire below the Mountain
Amumu wins against Ornn 50.33% of the time which is 3.56% lower against Ornn than the average opponent.
After normalising both champions win rates Amumu wins against Ornn 4.44% less often than would be expected.
The average opponent winrate against Ornn is 53.89%.


Brand
the Burning Vengeance
Amumu wins against Brand 50.54% of the time which is 0.47% higher against Brand than the average opponent.
After normalising both champions win rates Amumu wins against Brand 0.42% less often than would be expected.
The average opponent winrate against Brand is 50.07%.


Swain
the Noxian Grand General
Amumu wins against Swain 50.67% of the time which is 0.30% lower against Swain than the average opponent.
After normalising both champions win rates Amumu wins against Swain 1.19% less often than would be expected.
The average opponent winrate against Swain is 50.97%.


Lux
the Lady of Luminosity
Amumu wins against Lux 50.76% of the time which is 0.35% higher against Lux than the average opponent.
After normalising both champions win rates Amumu wins against Lux 0.54% less often than would be expected.
The average opponent winrate against Lux is 50.41%.


Leona
the Radiant Dawn
Amumu wins against Leona 50.86% of the time which is 1.85% higher against Leona than the average opponent.
After normalising both champions win rates Amumu wins against Leona 0.96% more often than would be expected.
The average opponent winrate against Leona is 49.01%.


Maokai
the Twisted Treant
Amumu wins against Maokai 50.92% of the time which is 1.78% higher against Maokai than the average opponent.
After normalising both champions win rates Amumu wins against Maokai 0.89% more often than would be expected.
The average opponent winrate against Maokai is 49.14%.


Ivern
the Green Father
Amumu wins against Ivern 51.07% of the time which is 1.39% higher against Ivern than the average opponent.
After normalising both champions win rates Amumu wins against Ivern 0.50% more often than would be expected.
The average opponent winrate against Ivern is 49.68%.


Hwei
the Visionary
Amumu wins against Hwei 51.07% of the time which is 0.69% higher against Hwei than the average opponent.
After normalising both champions win rates Amumu wins against Hwei 0.20% less often than would be expected.
The average opponent winrate against Hwei is 50.38%.


Veigar
the Tiny Master of Evil
Amumu wins against Veigar 51.12% of the time which is 1.53% lower against Veigar than the average opponent.
After normalising both champions win rates Amumu wins against Veigar 2.42% less often than would be expected.
The average opponent winrate against Veigar is 52.65%.


Bard
the Wandering Caretaker
Amumu wins against Bard 51.15% of the time which is 1.76% higher against Bard than the average opponent.
After normalising both champions win rates Amumu wins against Bard 0.87% more often than would be expected.
The average opponent winrate against Bard is 49.39%.


Seraphine
the Starry-Eyed Songstress
Amumu wins against Seraphine 51.15% of the time which is 1.01% higher against Seraphine than the average opponent.
After normalising both champions win rates Amumu wins against Seraphine 0.12% more often than would be expected.
The average opponent winrate against Seraphine is 50.14%.


Yuumi
the Magical Cat
Amumu wins against Yuumi 51.24% of the time which is 0.16% higher against Yuumi than the average opponent.
After normalising both champions win rates Amumu wins against Yuumi 0.73% less often than would be expected.
The average opponent winrate against Yuumi is 51.08%.


Jarvan IV
the Exemplar of Demacia
Amumu wins against Jarvan IV 51.24% of the time which is 1.06% higher against Jarvan IV than the average opponent.
After normalising both champions win rates Amumu wins against Jarvan IV 0.17% more often than would be expected.
The average opponent winrate against Jarvan IV is 50.18%.


Rell
the Iron Maiden
Amumu wins against Rell 51.27% of the time which is 1.67% higher against Rell than the average opponent.
After normalising both champions win rates Amumu wins against Rell 0.78% more often than would be expected.
The average opponent winrate against Rell is 49.60%.


Twisted Fate
the Card Master
Amumu wins against Twisted Fate 51.43% of the time which is 1.13% lower against Twisted Fate than the average opponent.
After normalising both champions win rates Amumu wins against Twisted Fate 2.02% less often than would be expected.
The average opponent winrate against Twisted Fate is 52.56%.


Lulu
the Fae Sorceress
Amumu wins against Lulu 51.52% of the time which is 2.79% higher against Lulu than the average opponent.
After normalising both champions win rates Amumu wins against Lulu 1.90% more often than would be expected.
The average opponent winrate against Lulu is 48.73%.


Blitzcrank
the Great Steam Golem
Amumu wins against Blitzcrank 51.73% of the time which is 1.51% higher against Blitzcrank than the average opponent.
After normalising both champions win rates Amumu wins against Blitzcrank 0.62% more often than would be expected.
The average opponent winrate against Blitzcrank is 50.22%.


Zyra
Rise of the Thorns
Amumu wins against Zyra 51.73% of the time which is 2.55% higher against Zyra than the average opponent.
After normalising both champions win rates Amumu wins against Zyra 1.66% more often than would be expected.
The average opponent winrate against Zyra is 49.18%.


Annie
the Dark Child
Amumu wins against Annie 51.73% of the time which is 1.84% higher against Annie than the average opponent.
After normalising both champions win rates Amumu wins against Annie 0.95% more often than would be expected.
The average opponent winrate against Annie is 49.89%.


Zoe
the Aspect of Twilight
Amumu wins against Zoe 51.74% of the time which is 0.53% higher against Zoe than the average opponent.
After normalising both champions win rates Amumu wins against Zoe 0.36% less often than would be expected.
The average opponent winrate against Zoe is 51.21%.


Thresh
the Chain Warden
Amumu wins against Thresh 51.77% of the time which is 2.22% higher against Thresh than the average opponent.
After normalising both champions win rates Amumu wins against Thresh 1.33% more often than would be expected.
The average opponent winrate against Thresh is 49.55%.


Tahm Kench
The River King
Amumu wins against Tahm Kench 52.15% of the time which is 1.61% higher against Tahm Kench than the average opponent.
After normalising both champions win rates Amumu wins against Tahm Kench 0.72% more often than would be expected.
The average opponent winrate against Tahm Kench is 50.54%.


Heimerdinger
the Revered Inventor
Amumu wins against Heimerdinger 52.25% of the time which is 1.76% higher against Heimerdinger than the average opponent.
After normalising both champions win rates Amumu wins against Heimerdinger 0.87% more often than would be expected.
The average opponent winrate against Heimerdinger is 50.49%.


Rakan
The Charmer
Amumu wins against Rakan 52.30% of the time which is 1.86% higher against Rakan than the average opponent.
After normalising both champions win rates Amumu wins against Rakan 0.97% more often than would be expected.
The average opponent winrate against Rakan is 50.44%.


Pyke
the Bloodharbor Ripper
Amumu wins against Pyke 52.45% of the time which is 1.65% higher against Pyke than the average opponent.
After normalising both champions win rates Amumu wins against Pyke 0.76% more often than would be expected.
The average opponent winrate against Pyke is 50.80%.


Cho'Gath
the Terror of the Void
Amumu wins against Cho'Gath 52.52% of the time which is 1.38% lower against Cho'Gath than the average opponent.
After normalising both champions win rates Amumu wins against Cho'Gath 2.26% less often than would be expected.
The average opponent winrate against Cho'Gath is 53.90%.


Alistar
the Minotaur
Amumu wins against Alistar 52.58% of the time which is 2.18% higher against Alistar than the average opponent.
After normalising both champions win rates Amumu wins against Alistar 1.29% more often than would be expected.
The average opponent winrate against Alistar is 50.40%.


Pantheon
the Unbreakable Spear
Amumu wins against Pantheon 52.67% of the time which is 2.13% higher against Pantheon than the average opponent.
After normalising both champions win rates Amumu wins against Pantheon 1.24% more often than would be expected.
The average opponent winrate against Pantheon is 50.54%.


Senna
the Redeemer
Amumu wins against Senna 52.75% of the time which is 1.10% higher against Senna than the average opponent.
After normalising both champions win rates Amumu wins against Senna 0.21% more often than would be expected.
The average opponent winrate against Senna is 51.65%.


Sejuani
Fury of the North
Amumu wins against Sejuani 52.85% of the time which is 0.72% lower against Sejuani than the average opponent.
After normalising both champions win rates Amumu wins against Sejuani 1.60% less often than would be expected.
The average opponent winrate against Sejuani is 53.57%.


Poppy
Keeper of the Hammer
Amumu wins against Poppy 52.94% of the time which is 3.71% higher against Poppy than the average opponent.
After normalising both champions win rates Amumu wins against Poppy 2.82% more often than would be expected.
The average opponent winrate against Poppy is 49.23%.


Ziggs
the Hexplosives Expert
Amumu wins against Ziggs 52.96% of the time which is 0.23% lower against Ziggs than the average opponent.
After normalising both champions win rates Amumu wins against Ziggs 1.12% less often than would be expected.
The average opponent winrate against Ziggs is 53.19%.


Syndra
the Dark Sovereign
Amumu wins against Syndra 53.05% of the time which is 1.35% lower against Syndra than the average opponent.
After normalising both champions win rates Amumu wins against Syndra 2.23% less often than would be expected.
The average opponent winrate against Syndra is 54.40%.


Nautilus
the Titan of the Depths
Amumu wins against Nautilus 53.41% of the time which is 2.66% higher against Nautilus than the average opponent.
After normalising both champions win rates Amumu wins against Nautilus 1.77% more often than would be expected.
The average opponent winrate against Nautilus is 50.75%.


Orianna
the Lady of Clockwork
Amumu wins against Orianna 53.42% of the time which is 1.17% lower against Orianna than the average opponent.
After normalising both champions win rates Amumu wins against Orianna 2.05% less often than would be expected.
The average opponent winrate against Orianna is 54.59%.


Neeko
the Curious Chameleon
Amumu wins against Neeko 53.45% of the time which is 2.55% higher against Neeko than the average opponent.
After normalising both champions win rates Amumu wins against Neeko 1.66% more often than would be expected.
The average opponent winrate against Neeko is 50.90%.


Anivia
the Cryophoenix
Amumu wins against Anivia 53.52% of the time which is 1.07% higher against Anivia than the average opponent.
After normalising both champions win rates Amumu wins against Anivia 0.18% more often than would be expected.
The average opponent winrate against Anivia is 52.45%.


Malphite
Shard of the Monolith
Amumu wins against Malphite 53.61% of the time which is 0.50% higher against Malphite than the average opponent.
After normalising both champions win rates Amumu wins against Malphite 0.39% less often than would be expected.
The average opponent winrate against Malphite is 53.11%.


Camille
the Steel Shadow
Amumu wins against Camille 53.98% of the time which is 0.00% lower against Camille than the average opponent.
After normalising both champions win rates Amumu wins against Camille 0.88% less often than would be expected.
The average opponent winrate against Camille is 53.98%.


Sett
the Boss
Amumu wins against Sett 54.23% of the time which is 0.88% higher against Sett than the average opponent.
After normalising both champions win rates Amumu wins against Sett 0.01% less often than would be expected.
The average opponent winrate against Sett is 53.35%.


Nidalee
the Bestial Huntress
Amumu wins against Nidalee 55.32% of the time which is 4.88% higher against Nidalee than the average opponent.
After normalising both champions win rates Amumu wins against Nidalee 3.99% more often than would be expected.
The average opponent winrate against Nidalee is 50.44%.


Zed
the Master of Shadows
Amumu wins against Zed 55.34% of the time which is 1.39% lower against Zed than the average opponent.
After normalising both champions win rates Amumu wins against Zed 2.26% less often than would be expected.
The average opponent winrate against Zed is 56.73%.


Gragas
the Rabble Rouser
Amumu wins against Gragas 55.37% of the time which is 4.76% higher against Gragas than the average opponent.
After normalising both champions win rates Amumu wins against Gragas 3.87% more often than would be expected.
The average opponent winrate against Gragas is 50.61%.


Vex
the Gloomist
Amumu wins against Vex 55.37% of the time which is 2.35% higher against Vex than the average opponent.
After normalising both champions win rates Amumu wins against Vex 1.46% more often than would be expected.
The average opponent winrate against Vex is 53.02%.


Mel
the Soul's Reflection
Amumu wins against Mel 55.40% of the time which is 1.56% higher against Mel than the average opponent.
After normalising both champions win rates Amumu wins against Mel 0.68% more often than would be expected.
The average opponent winrate against Mel is 53.84%.


Ashe
the Frost Archer
Amumu wins against Ashe 55.49% of the time which is 1.38% higher against Ashe than the average opponent.
After normalising both champions win rates Amumu wins against Ashe 0.50% more often than would be expected.
The average opponent winrate against Ashe is 54.11%.


Dr. Mundo
the Madman of Zaun
Amumu wins against Dr. Mundo 56.00% of the time which is 1.74% higher against Dr. Mundo than the average opponent.
After normalising both champions win rates Amumu wins against Dr. Mundo 0.86% more often than would be expected.
The average opponent winrate against Dr. Mundo is 54.26%.


Twitch
the Plague Rat
Amumu wins against Twitch 56.38% of the time which is 0.55% lower against Twitch than the average opponent.
After normalising both champions win rates Amumu wins against Twitch 1.42% less often than would be expected.
The average opponent winrate against Twitch is 56.93%.


Yasuo
the Unforgiven
Amumu wins against Yasuo 56.44% of the time which is 2.99% lower against Yasuo than the average opponent.
After normalising both champions win rates Amumu wins against Yasuo 3.85% less often than would be expected.
The average opponent winrate against Yasuo is 59.43%.


Nunu & Willump
the Boy and His Yeti
Amumu wins against Nunu & Willump 57.48% of the time which is 0.37% lower against Nunu & Willump than the average opponent.
After normalising both champions win rates Amumu wins against Nunu & Willump 1.24% less often than would be expected.
The average opponent winrate against Nunu & Willump is 57.85%.


Lee Sin
the Blind Monk
Amumu wins against Lee Sin 57.73% of the time which is 0.92% higher against Lee Sin than the average opponent.
After normalising both champions win rates Amumu wins against Lee Sin 0.05% more often than would be expected.
The average opponent winrate against Lee Sin is 56.81%.


Wukong
the Monkey King
Amumu wins against Wukong 57.93% of the time which is 5.90% higher against Wukong than the average opponent.
After normalising both champions win rates Amumu wins against Wukong 5.01% more often than would be expected.
The average opponent winrate against Wukong is 52.03%.


Lissandra
the Ice Witch
Amumu wins against Lissandra 58.03% of the time which is 5.12% higher against Lissandra than the average opponent.
After normalising both champions win rates Amumu wins against Lissandra 4.23% more often than would be expected.
The average opponent winrate against Lissandra is 52.91%.


Ahri
the Nine-Tailed Fox
Amumu wins against Ahri 58.18% of the time which is 4.47% higher against Ahri than the average opponent.
After normalising both champions win rates Amumu wins against Ahri 3.59% more often than would be expected.
The average opponent winrate against Ahri is 53.71%.


Malzahar
the Prophet of the Void
Amumu wins against Malzahar 58.22% of the time which is 3.26% higher against Malzahar than the average opponent.
After normalising both champions win rates Amumu wins against Malzahar 2.38% more often than would be expected.
The average opponent winrate against Malzahar is 54.96%.


Aurora
the Witch Between Worlds
Amumu wins against Aurora 58.49% of the time which is 2.60% higher against Aurora than the average opponent.
After normalising both champions win rates Amumu wins against Aurora 1.72% more often than would be expected.
The average opponent winrate against Aurora is 55.89%.


Varus
the Arrow of Retribution
Amumu wins against Varus 58.87% of the time which is 0.30% lower against Varus than the average opponent.
After normalising both champions win rates Amumu wins against Varus 1.16% less often than would be expected.
The average opponent winrate against Varus is 59.17%.


Jhin
the Virtuoso
Amumu wins against Jhin 59.42% of the time which is 0.15% higher against Jhin than the average opponent.
After normalising both champions win rates Amumu wins against Jhin 0.71% less often than would be expected.
The average opponent winrate against Jhin is 59.27%.


Caitlyn
the Sheriff of Piltover
Amumu wins against Caitlyn 61.47% of the time which is 1.75% lower against Caitlyn than the average opponent.
After normalising both champions win rates Amumu wins against Caitlyn 2.58% less often than would be expected.
The average opponent winrate against Caitlyn is 63.22%.


Miss Fortune
the Bounty Hunter
Amumu wins against Miss Fortune 61.85% of the time which is 3.55% higher against Miss Fortune than the average opponent.
After normalising both champions win rates Amumu wins against Miss Fortune 2.69% more often than would be expected.
The average opponent winrate against Miss Fortune is 58.30%.


Ezreal
the Prodigal Explorer
Amumu wins against Ezreal 61.94% of the time which is 1.71% lower against Ezreal than the average opponent.
After normalising both champions win rates Amumu wins against Ezreal 2.53% less often than would be expected.
The average opponent winrate against Ezreal is 63.65%.