

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: 16,590,402
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.


Sylas Counters
Sylas middle vs middle Counters
Sylas middle on Patch 15.6 is the strongest counter to middle champions of Kai'Sa, Ezreal & Varus. While Sylas middle is countered most by middle champions of Illaoi, Tryndamere & Morgana. Below is a detailed breakdown of Sylas middle counters against middle champions with a minimum of 100 games.


Illaoi
the Kraken Priestess
Sylas wins against Illaoi 39.13% of the time which is 9.29% lower against Illaoi than the average opponent.
After normalising both champions win rates Sylas wins against Illaoi 12.01% less often than would be expected.
The average opponent winrate against Illaoi is 48.42%.


Tryndamere
the Barbarian King
Sylas wins against Tryndamere 41.50% of the time which is 5.31% lower against Tryndamere than the average opponent.
After normalising both champions win rates Sylas wins against Tryndamere 8.03% less often than would be expected.
The average opponent winrate against Tryndamere is 46.81%.


Morgana
the Fallen
Sylas wins against Morgana 41.86% of the time which is 4.80% lower against Morgana than the average opponent.
After normalising both champions win rates Sylas wins against Morgana 7.52% less often than would be expected.
The average opponent winrate against Morgana is 46.66%.


Naafiri
the Hound of a Hundred Bites
Sylas wins against Naafiri 42.94% of the time which is 1.79% lower against Naafiri than the average opponent.
After normalising both champions win rates Sylas wins against Naafiri 4.50% less often than would be expected.
The average opponent winrate against Naafiri is 44.73%.


Heimerdinger
the Revered Inventor
Sylas wins against Heimerdinger 43.09% of the time which is 2.31% lower against Heimerdinger than the average opponent.
After normalising both champions win rates Sylas wins against Heimerdinger 5.02% less often than would be expected.
The average opponent winrate against Heimerdinger is 45.40%.


Fiddlesticks
the Ancient Fear
Sylas wins against Fiddlesticks 43.33% of the time which is 1.61% lower against Fiddlesticks than the average opponent.
After normalising both champions win rates Sylas wins against Fiddlesticks 4.32% less often than would be expected.
The average opponent winrate against Fiddlesticks is 44.94%.


Zilean
the Chronokeeper
Sylas wins against Zilean 43.41% of the time which is 1.87% lower against Zilean than the average opponent.
After normalising both champions win rates Sylas wins against Zilean 4.58% less often than would be expected.
The average opponent winrate against Zilean is 45.28%.


Kled
the Cantankerous Cavalier
Sylas wins against Kled 43.48% of the time which is 2.35% lower against Kled than the average opponent.
After normalising both champions win rates Sylas wins against Kled 5.07% less often than would be expected.
The average opponent winrate against Kled is 45.83%.


Gragas
the Rabble Rouser
Sylas wins against Gragas 44.80% of the time which is 1.77% lower against Gragas than the average opponent.
After normalising both champions win rates Sylas wins against Gragas 4.49% less often than would be expected.
The average opponent winrate against Gragas is 46.57%.


K'Sante
the Pride of Nazumah
Sylas wins against K'Sante 44.95% of the time which is 5.77% lower against K'Sante than the average opponent.
After normalising both champions win rates Sylas wins against K'Sante 8.49% less often than would be expected.
The average opponent winrate against K'Sante is 50.72%.


Singed
the Mad Chemist
Sylas wins against Singed 45.58% of the time which is 0.54% higher against Singed than the average opponent.
After normalising both champions win rates Sylas wins against Singed 2.17% less often than would be expected.
The average opponent winrate against Singed is 45.04%.


Gwen
The Hallowed Seamstress
Sylas wins against Gwen 46.15% of the time which is 1.91% lower against Gwen than the average opponent.
After normalising both champions win rates Sylas wins against Gwen 4.63% less often than would be expected.
The average opponent winrate against Gwen is 48.06%.


Cassiopeia
the Serpent's Embrace
Sylas wins against Cassiopeia 46.27% of the time which is 0.12% lower against Cassiopeia than the average opponent.
After normalising both champions win rates Sylas wins against Cassiopeia 2.84% less often than would be expected.
The average opponent winrate against Cassiopeia is 46.39%.


Vayne
the Night Hunter
Sylas wins against Vayne 46.30% of the time which is 3.43% lower against Vayne than the average opponent.
After normalising both champions win rates Sylas wins against Vayne 6.15% less often than would be expected.
The average opponent winrate against Vayne is 49.73%.


Taliyah
the Stoneweaver
Sylas wins against Taliyah 46.77% of the time which is 0.30% lower against Taliyah than the average opponent.
After normalising both champions win rates Sylas wins against Taliyah 3.02% less often than would be expected.
The average opponent winrate against Taliyah is 47.07%.


Ambessa
Matriarch of War
Sylas wins against Ambessa 46.79% of the time which is 3.32% lower against Ambessa than the average opponent.
After normalising both champions win rates Sylas wins against Ambessa 6.04% less often than would be expected.
The average opponent winrate against Ambessa is 50.11%.


Vex
the Gloomist
Sylas wins against Vex 46.94% of the time which is 0.46% higher against Vex than the average opponent.
After normalising both champions win rates Sylas wins against Vex 2.26% less often than would be expected.
The average opponent winrate against Vex is 46.48%.


Galio
the Colossus
Sylas wins against Galio 47.05% of the time which is 0.34% lower against Galio than the average opponent.
After normalising both champions win rates Sylas wins against Galio 3.06% less often than would be expected.
The average opponent winrate against Galio is 47.39%.


Sion
The Undead Juggernaut
Sylas wins against Sion 47.09% of the time which is 0.21% higher against Sion than the average opponent.
After normalising both champions win rates Sylas wins against Sion 2.51% less often than would be expected.
The average opponent winrate against Sion is 46.88%.


Shen
the Eye of Twilight
Sylas wins against Shen 47.12% of the time which is 0.12% higher against Shen than the average opponent.
After normalising both champions win rates Sylas wins against Shen 2.60% less often than would be expected.
The average opponent winrate against Shen is 47.00%.


Swain
the Noxian Grand General
Sylas wins against Swain 47.24% of the time which is 1.20% higher against Swain than the average opponent.
After normalising both champions win rates Sylas wins against Swain 1.52% less often than would be expected.
The average opponent winrate against Swain is 46.04%.


Darius
the Hand of Noxus
Sylas wins against Darius 47.50% of the time which is 1.65% higher against Darius than the average opponent.
After normalising both champions win rates Sylas wins against Darius 1.07% less often than would be expected.
The average opponent winrate against Darius is 45.85%.


Anivia
the Cryophoenix
Sylas wins against Anivia 47.51% of the time which is 1.51% higher against Anivia than the average opponent.
After normalising both champions win rates Sylas wins against Anivia 1.21% less often than would be expected.
The average opponent winrate against Anivia is 46.00%.


Zac
the Secret Weapon
Sylas wins against Zac 47.56% of the time which is 1.18% higher against Zac than the average opponent.
After normalising both champions win rates Sylas wins against Zac 1.54% less often than would be expected.
The average opponent winrate against Zac is 46.38%.


Sett
the Boss
Sylas wins against Sett 47.57% of the time which is 1.26% higher against Sett than the average opponent.
After normalising both champions win rates Sylas wins against Sett 1.46% less often than would be expected.
The average opponent winrate against Sett is 46.31%.


Neeko
the Curious Chameleon
Sylas wins against Neeko 47.58% of the time which is 1.92% higher against Neeko than the average opponent.
After normalising both champions win rates Sylas wins against Neeko 0.79% less often than would be expected.
The average opponent winrate against Neeko is 45.66%.


Viego
The Ruined King
Sylas wins against Viego 47.59% of the time which is 3.19% lower against Viego than the average opponent.
After normalising both champions win rates Sylas wins against Viego 5.91% less often than would be expected.
The average opponent winrate against Viego is 50.78%.


Zoe
the Aspect of Twilight
Sylas wins against Zoe 47.71% of the time which is 0.05% higher against Zoe than the average opponent.
After normalising both champions win rates Sylas wins against Zoe 2.67% less often than would be expected.
The average opponent winrate against Zoe is 47.66%.


Rumble
the Mechanized Menace
Sylas wins against Rumble 48.08% of the time which is 1.03% higher against Rumble than the average opponent.
After normalising both champions win rates Sylas wins against Rumble 1.69% less often than would be expected.
The average opponent winrate against Rumble is 47.05%.


Pantheon
the Unbreakable Spear
Sylas wins against Pantheon 48.19% of the time which is 2.25% higher against Pantheon than the average opponent.
After normalising both champions win rates Sylas wins against Pantheon 0.47% less often than would be expected.
The average opponent winrate against Pantheon is 45.94%.


Yasuo
the Unforgiven
Sylas wins against Yasuo 48.26% of the time which is 0.25% higher against Yasuo than the average opponent.
After normalising both champions win rates Sylas wins against Yasuo 2.47% less often than would be expected.
The average opponent winrate against Yasuo is 48.01%.


Vel'Koz
the Eye of the Void
Sylas wins against Vel'Koz 48.44% of the time which is 1.37% higher against Vel'Koz than the average opponent.
After normalising both champions win rates Sylas wins against Vel'Koz 1.35% less often than would be expected.
The average opponent winrate against Vel'Koz is 47.07%.


Riven
the Exile
Sylas wins against Riven 48.58% of the time which is 2.30% higher against Riven than the average opponent.
After normalising both champions win rates Sylas wins against Riven 0.42% less often than would be expected.
The average opponent winrate against Riven is 46.28%.


Hwei
the Visionary
Sylas wins against Hwei 48.65% of the time which is 0.93% lower against Hwei than the average opponent.
After normalising both champions win rates Sylas wins against Hwei 3.65% less often than would be expected.
The average opponent winrate against Hwei is 49.58%.


Akshan
the Rogue Sentinel
Sylas wins against Akshan 48.71% of the time which is 1.63% higher against Akshan than the average opponent.
After normalising both champions win rates Sylas wins against Akshan 1.09% less often than would be expected.
The average opponent winrate against Akshan is 47.08%.


Corki
the Daring Bombardier
Sylas wins against Corki 48.82% of the time which is 2.25% lower against Corki than the average opponent.
After normalising both champions win rates Sylas wins against Corki 4.97% less often than would be expected.
The average opponent winrate against Corki is 51.07%.


Kennen
the Heart of the Tempest
Sylas wins against Kennen 49.03% of the time which is 4.05% higher against Kennen than the average opponent.
After normalising both champions win rates Sylas wins against Kennen 1.34% more often than would be expected.
The average opponent winrate against Kennen is 44.98%.


Cho'Gath
the Terror of the Void
Sylas wins against Cho'Gath 49.43% of the time which is 3.56% higher against Cho'Gath than the average opponent.
After normalising both champions win rates Sylas wins against Cho'Gath 0.84% more often than would be expected.
The average opponent winrate against Cho'Gath is 45.87%.


Malzahar
the Prophet of the Void
Sylas wins against Malzahar 49.58% of the time which is 2.70% higher against Malzahar than the average opponent.
After normalising both champions win rates Sylas wins against Malzahar 0.02% less often than would be expected.
The average opponent winrate against Malzahar is 46.88%.


Annie
the Dark Child
Sylas wins against Annie 49.61% of the time which is 4.55% higher against Annie than the average opponent.
After normalising both champions win rates Sylas wins against Annie 1.84% more often than would be expected.
The average opponent winrate against Annie is 45.06%.


Brand
the Burning Vengeance
Sylas wins against Brand 49.76% of the time which is 1.30% higher against Brand than the average opponent.
After normalising both champions win rates Sylas wins against Brand 1.42% less often than would be expected.
The average opponent winrate against Brand is 48.46%.


Ryze
the Rune Mage
Sylas wins against Ryze 49.82% of the time which is 1.64% higher against Ryze than the average opponent.
After normalising both champions win rates Sylas wins against Ryze 1.08% less often than would be expected.
The average opponent winrate against Ryze is 48.18%.


Renekton
the Butcher of the Sands
Sylas wins against Renekton 50.00% of the time which is 2.53% higher against Renekton than the average opponent.
After normalising both champions win rates Sylas wins against Renekton 0.19% less often than would be expected.
The average opponent winrate against Renekton is 47.47%.


Vi
the Piltover Enforcer
Sylas wins against Vi 50.00% of the time which is 1.10% lower against Vi than the average opponent.
After normalising both champions win rates Sylas wins against Vi 3.82% less often than would be expected.
The average opponent winrate against Vi is 51.10%.


Diana
Scorn of the Moon
Sylas wins against Diana 50.05% of the time which is 3.29% higher against Diana than the average opponent.
After normalising both champions win rates Sylas wins against Diana 0.57% more often than would be expected.
The average opponent winrate against Diana is 46.76%.


Karma
the Enlightened One
Sylas wins against Karma 50.17% of the time which is 0.91% higher against Karma than the average opponent.
After normalising both champions win rates Sylas wins against Karma 1.81% less often than would be expected.
The average opponent winrate against Karma is 49.26%.


Ahri
the Nine-Tailed Fox
Sylas wins against Ahri 50.29% of the time which is 3.55% higher against Ahri than the average opponent.
After normalising both champions win rates Sylas wins against Ahri 0.83% more often than would be expected.
The average opponent winrate against Ahri is 46.74%.


Talon
the Blade's Shadow
Sylas wins against Talon 50.34% of the time which is 2.81% higher against Talon than the average opponent.
After normalising both champions win rates Sylas wins against Talon 0.09% more often than would be expected.
The average opponent winrate against Talon is 47.53%.


Seraphine
the Starry-Eyed Songstress
Sylas wins against Seraphine 50.63% of the time which is 0.82% higher against Seraphine than the average opponent.
After normalising both champions win rates Sylas wins against Seraphine 1.90% less often than would be expected.
The average opponent winrate against Seraphine is 49.81%.


Veigar
the Tiny Master of Evil
Sylas wins against Veigar 50.69% of the time which is 3.26% higher against Veigar than the average opponent.
After normalising both champions win rates Sylas wins against Veigar 0.54% more often than would be expected.
The average opponent winrate against Veigar is 47.43%.


Katarina
the Sinister Blade
Sylas wins against Katarina 50.82% of the time which is 2.62% higher against Katarina than the average opponent.
After normalising both champions win rates Sylas wins against Katarina 0.10% less often than would be expected.
The average opponent winrate against Katarina is 48.20%.


Twisted Fate
the Card Master
Sylas wins against Twisted Fate 50.91% of the time which is 2.56% higher against Twisted Fate than the average opponent.
After normalising both champions win rates Sylas wins against Twisted Fate 0.16% less often than would be expected.
The average opponent winrate against Twisted Fate is 48.35%.


Ziggs
the Hexplosives Expert
Sylas wins against Ziggs 50.93% of the time which is 1.64% higher against Ziggs than the average opponent.
After normalising both champions win rates Sylas wins against Ziggs 1.08% less often than would be expected.
The average opponent winrate against Ziggs is 49.29%.


Nasus
the Curator of the Sands
Sylas wins against Nasus 51.03% of the time which is 3.79% higher against Nasus than the average opponent.
After normalising both champions win rates Sylas wins against Nasus 1.07% more often than would be expected.
The average opponent winrate against Nasus is 47.24%.


Syndra
the Dark Sovereign
Sylas wins against Syndra 51.04% of the time which is 3.35% higher against Syndra than the average opponent.
After normalising both champions win rates Sylas wins against Syndra 0.63% more often than would be expected.
The average opponent winrate against Syndra is 47.69%.


Kassadin
the Void Walker
Sylas wins against Kassadin 51.12% of the time which is 2.83% higher against Kassadin than the average opponent.
After normalising both champions win rates Sylas wins against Kassadin 0.11% more often than would be expected.
The average opponent winrate against Kassadin is 48.29%.


Lux
the Lady of Luminosity
Sylas wins against Lux 51.40% of the time which is 3.36% higher against Lux than the average opponent.
After normalising both champions win rates Sylas wins against Lux 0.64% more often than would be expected.
The average opponent winrate against Lux is 48.04%.


Orianna
the Lady of Clockwork
Sylas wins against Orianna 51.45% of the time which is 2.53% higher against Orianna than the average opponent.
After normalising both champions win rates Sylas wins against Orianna 0.19% less often than would be expected.
The average opponent winrate against Orianna is 48.92%.


Viktor
the Herald of the Arcane
Sylas wins against Viktor 51.56% of the time which is 3.35% higher against Viktor than the average opponent.
After normalising both champions win rates Sylas wins against Viktor 0.63% more often than would be expected.
The average opponent winrate against Viktor is 48.21%.


Garen
The Might of Demacia
Sylas wins against Garen 51.57% of the time which is 3.97% higher against Garen than the average opponent.
After normalising both champions win rates Sylas wins against Garen 1.25% more often than would be expected.
The average opponent winrate against Garen is 47.60%.


Jayce
the Defender of Tomorrow
Sylas wins against Jayce 51.60% of the time which is 2.02% higher against Jayce than the average opponent.
After normalising both champions win rates Sylas wins against Jayce 0.70% less often than would be expected.
The average opponent winrate against Jayce is 49.58%.


Aurelion Sol
The Star Forger
Sylas wins against Aurelion Sol 51.67% of the time which is 4.00% higher against Aurelion Sol than the average opponent.
After normalising both champions win rates Sylas wins against Aurelion Sol 1.28% more often than would be expected.
The average opponent winrate against Aurelion Sol is 47.67%.


Vladimir
the Crimson Reaper
Sylas wins against Vladimir 51.98% of the time which is 4.53% higher against Vladimir than the average opponent.
After normalising both champions win rates Sylas wins against Vladimir 1.81% more often than would be expected.
The average opponent winrate against Vladimir is 47.45%.


Quinn
Demacia's Wings
Sylas wins against Quinn 52.10% of the time which is 7.35% higher against Quinn than the average opponent.
After normalising both champions win rates Sylas wins against Quinn 4.64% more often than would be expected.
The average opponent winrate against Quinn is 44.75%.


Akali
the Rogue Assassin
Sylas wins against Akali 52.10% of the time which is 3.16% higher against Akali than the average opponent.
After normalising both champions win rates Sylas wins against Akali 0.44% more often than would be expected.
The average opponent winrate against Akali is 48.94%.


Qiyana
Empress of the Elements
Sylas wins against Qiyana 52.34% of the time which is 4.35% higher against Qiyana than the average opponent.
After normalising both champions win rates Sylas wins against Qiyana 1.63% more often than would be expected.
The average opponent winrate against Qiyana is 47.99%.


LeBlanc
the Deceiver
Sylas wins against LeBlanc 52.49% of the time which is 3.24% higher against LeBlanc than the average opponent.
After normalising both champions win rates Sylas wins against LeBlanc 0.52% more often than would be expected.
The average opponent winrate against LeBlanc is 49.25%.


Lissandra
the Ice Witch
Sylas wins against Lissandra 52.55% of the time which is 5.10% higher against Lissandra than the average opponent.
After normalising both champions win rates Sylas wins against Lissandra 2.38% more often than would be expected.
The average opponent winrate against Lissandra is 47.45%.


Kayle
the Righteous
Sylas wins against Kayle 52.74% of the time which is 6.39% higher against Kayle than the average opponent.
After normalising both champions win rates Sylas wins against Kayle 3.67% more often than would be expected.
The average opponent winrate against Kayle is 46.35%.


Aurora
the Witch Between Worlds
Sylas wins against Aurora 52.94% of the time which is 2.53% higher against Aurora than the average opponent.
After normalising both champions win rates Sylas wins against Aurora 0.19% less often than would be expected.
The average opponent winrate against Aurora is 50.41%.


Yone
the Unforgotten
Sylas wins against Yone 53.05% of the time which is 2.27% higher against Yone than the average opponent.
After normalising both champions win rates Sylas wins against Yone 0.45% less often than would be expected.
The average opponent winrate against Yone is 50.78%.


Gangplank
the Saltwater Scourge
Sylas wins against Gangplank 53.32% of the time which is 5.02% higher against Gangplank than the average opponent.
After normalising both champions win rates Sylas wins against Gangplank 2.30% more often than would be expected.
The average opponent winrate against Gangplank is 48.30%.


Irelia
the Blade Dancer
Sylas wins against Irelia 53.35% of the time which is 5.24% higher against Irelia than the average opponent.
After normalising both champions win rates Sylas wins against Irelia 2.52% more often than would be expected.
The average opponent winrate against Irelia is 48.11%.


Zed
the Master of Shadows
Sylas wins against Zed 53.66% of the time which is 4.82% higher against Zed than the average opponent.
After normalising both champions win rates Sylas wins against Zed 2.10% more often than would be expected.
The average opponent winrate against Zed is 48.84%.


Ekko
the Boy Who Shattered Time
Sylas wins against Ekko 54.43% of the time which is 6.73% higher against Ekko than the average opponent.
After normalising both champions win rates Sylas wins against Ekko 4.01% more often than would be expected.
The average opponent winrate against Ekko is 47.70%.


Xerath
the Magus Ascendant
Sylas wins against Xerath 54.55% of the time which is 5.93% higher against Xerath than the average opponent.
After normalising both champions win rates Sylas wins against Xerath 3.21% more often than would be expected.
The average opponent winrate against Xerath is 48.62%.


Nunu & Willump
the Boy and His Yeti
Sylas wins against Nunu & Willump 54.72% of the time which is 6.52% higher against Nunu & Willump than the average opponent.
After normalising both champions win rates Sylas wins against Nunu & Willump 3.80% more often than would be expected.
The average opponent winrate against Nunu & Willump is 48.20%.


Tristana
the Yordle Gunner
Sylas wins against Tristana 54.81% of the time which is 3.53% higher against Tristana than the average opponent.
After normalising both champions win rates Sylas wins against Tristana 0.81% more often than would be expected.
The average opponent winrate against Tristana is 51.28%.


Malphite
Shard of the Monolith
Sylas wins against Malphite 54.96% of the time which is 8.64% higher against Malphite than the average opponent.
After normalising both champions win rates Sylas wins against Malphite 5.92% more often than would be expected.
The average opponent winrate against Malphite is 46.32%.


Mel
the Soul's Reflection
Sylas wins against Mel 55.06% of the time which is 2.67% higher against Mel than the average opponent.
After normalising both champions win rates Sylas wins against Mel 0.05% less often than would be expected.
The average opponent winrate against Mel is 52.39%.


Aatrox
the Darkin Blade
Sylas wins against Aatrox 55.64% of the time which is 6.96% higher against Aatrox than the average opponent.
After normalising both champions win rates Sylas wins against Aatrox 4.24% more often than would be expected.
The average opponent winrate against Aatrox is 48.68%.


Azir
the Emperor of the Sands
Sylas wins against Azir 55.90% of the time which is 5.25% higher against Azir than the average opponent.
After normalising both champions win rates Sylas wins against Azir 2.53% more often than would be expected.
The average opponent winrate against Azir is 50.65%.


Fizz
the Tidal Trickster
Sylas wins against Fizz 56.03% of the time which is 8.35% higher against Fizz than the average opponent.
After normalising both champions win rates Sylas wins against Fizz 5.63% more often than would be expected.
The average opponent winrate against Fizz is 47.68%.


Mordekaiser
the Iron Revenant
Sylas wins against Mordekaiser 56.91% of the time which is 7.69% higher against Mordekaiser than the average opponent.
After normalising both champions win rates Sylas wins against Mordekaiser 4.97% more often than would be expected.
The average opponent winrate against Mordekaiser is 49.22%.


Lucian
the Purifier
Sylas wins against Lucian 57.19% of the time which is 0.79% higher against Lucian than the average opponent.
After normalising both champions win rates Sylas wins against Lucian 1.91% less often than would be expected.
The average opponent winrate against Lucian is 56.40%.


Smolder
the Fiery Fledgling
Sylas wins against Smolder 57.33% of the time which is 4.03% higher against Smolder than the average opponent.
After normalising both champions win rates Sylas wins against Smolder 1.32% more often than would be expected.
The average opponent winrate against Smolder is 53.30%.


Varus
the Arrow of Retribution
Sylas wins against Varus 57.53% of the time which is 6.69% higher against Varus than the average opponent.
After normalising both champions win rates Sylas wins against Varus 3.97% more often than would be expected.
The average opponent winrate against Varus is 50.84%.


Ezreal
the Prodigal Explorer
Sylas wins against Ezreal 58.52% of the time which is 2.28% higher against Ezreal than the average opponent.
After normalising both champions win rates Sylas wins against Ezreal 0.42% less often than would be expected.
The average opponent winrate against Ezreal is 56.24%.


Kai'Sa
Daughter of the Void
Sylas wins against Kai'Sa 65.00% of the time which is 9.85% higher against Kai'Sa than the average opponent.
After normalising both champions win rates Sylas wins against Kai'Sa 7.14% more often than would be expected.
The average opponent winrate against Kai'Sa is 55.15%.