![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![diamond_plus](https://cdn5.lolalytics.com/emblem40/diamond.webp)
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.
Diamond+ Champions Analysed: 12,684,741
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.
![Cassiopeia](https://cdn5.lolalytics.com/champ140/cassiopeia.webp)
![middle lane](https://cdn5.lolalytics.com/lane27/middle.webp)
Cassiopeia Counters
Cassiopeia middle vs top Counters
Cassiopeia middle on Patch 14.1 is the strongest counter to top champions of Sylas, Yasuo & Volibear. While Cassiopeia middle is countered most by top champions of Quinn, Akshan & Kled. Below is a detailed breakdown of Cassiopeia middle counters against top champions with a minimum of 100 games.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Quinn](https://cdn5.lolalytics.com/champx46/quinn.webp)
Quinn
Demacia's Wings
Cassiopeia wins against Quinn 46.55% of the time which is 0.03% higher against Quinn than the average opponent.
After normalising both champions win rates Cassiopeia wins against Quinn 4.81% less often than would be expected.
The average opponent winrate against Quinnis 46.52%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Akshan](https://cdn5.lolalytics.com/champx46/akshan.webp)
Akshan
the Rogue Sentinel
Cassiopeia wins against Akshan 47.50% of the time which is 0.44% higher against Akshan than the average opponent.
After normalising both champions win rates Cassiopeia wins against Akshan 4.40% less often than would be expected.
The average opponent winrate against Akshanis 47.06%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Kled](https://cdn5.lolalytics.com/champx46/kled.webp)
Kled
the Cantankerous Cavalier
Cassiopeia wins against Kled 47.60% of the time which is 0.95% higher against Kled than the average opponent.
After normalising both champions win rates Cassiopeia wins against Kled 3.89% less often than would be expected.
The average opponent winrate against Kledis 46.65%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Zac](https://cdn5.lolalytics.com/champx46/zac.webp)
Zac
the Secret Weapon
Cassiopeia wins against Zac 47.97% of the time which is 1.24% higher against Zac than the average opponent.
After normalising both champions win rates Cassiopeia wins against Zac 3.60% less often than would be expected.
The average opponent winrate against Zacis 46.73%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Gangplank](https://cdn5.lolalytics.com/champx46/gangplank.webp)
Gangplank
the Saltwater Scourge
Cassiopeia wins against Gangplank 49.22% of the time which is 0.06% lower against Gangplank than the average opponent.
After normalising both champions win rates Cassiopeia wins against Gangplank 4.90% less often than would be expected.
The average opponent winrate against Gangplankis 49.28%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Akali](https://cdn5.lolalytics.com/champx46/akali.webp)
Akali
the Rogue Assassin
Cassiopeia wins against Akali 49.43% of the time which is 0.67% lower against Akali than the average opponent.
After normalising both champions win rates Cassiopeia wins against Akali 5.51% less often than would be expected.
The average opponent winrate against Akaliis 50.10%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Cho'Gath](https://cdn5.lolalytics.com/champx46/chogath.webp)
Cho'Gath
the Terror of the Void
Cassiopeia wins against Cho'Gath 49.43% of the time which is 0.24% higher against Cho'Gath than the average opponent.
After normalising both champions win rates Cassiopeia wins against Cho'Gath 4.60% less often than would be expected.
The average opponent winrate against Cho'Gathis 49.19%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Warwick](https://cdn5.lolalytics.com/champx46/warwick.webp)
Warwick
the Uncaged Wrath of Zaun
Cassiopeia wins against Warwick 49.67% of the time which is 2.35% higher against Warwick than the average opponent.
After normalising both champions win rates Cassiopeia wins against Warwick 2.49% less often than would be expected.
The average opponent winrate against Warwickis 47.32%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Singed](https://cdn5.lolalytics.com/champx46/singed.webp)
Singed
the Mad Chemist
Cassiopeia wins against Singed 50.28% of the time which is 4.30% higher against Singed than the average opponent.
After normalising both champions win rates Cassiopeia wins against Singed 0.54% less often than would be expected.
The average opponent winrate against Singedis 45.98%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Poppy](https://cdn5.lolalytics.com/champx46/poppy.webp)
Poppy
Keeper of the Hammer
Cassiopeia wins against Poppy 50.43% of the time which is 3.85% higher against Poppy than the average opponent.
After normalising both champions win rates Cassiopeia wins against Poppy 0.99% less often than would be expected.
The average opponent winrate against Poppyis 46.58%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Shen](https://cdn5.lolalytics.com/champx46/shen.webp)
Shen
the Eye of Twilight
Cassiopeia wins against Shen 50.76% of the time which is 1.65% higher against Shen than the average opponent.
After normalising both champions win rates Cassiopeia wins against Shen 3.19% less often than would be expected.
The average opponent winrate against Shenis 49.11%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Mordekaiser](https://cdn5.lolalytics.com/champx46/mordekaiser.webp)
Mordekaiser
the Iron Revenant
Cassiopeia wins against Mordekaiser 50.78% of the time which is 3.87% higher against Mordekaiser than the average opponent.
After normalising both champions win rates Cassiopeia wins against Mordekaiser 0.97% less often than would be expected.
The average opponent winrate against Mordekaiseris 46.91%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Udyr](https://cdn5.lolalytics.com/champx46/udyr.webp)
Udyr
the Spirit Walker
Cassiopeia wins against Udyr 51.01% of the time which is 1.84% higher against Udyr than the average opponent.
After normalising both champions win rates Cassiopeia wins against Udyr 3.00% less often than would be expected.
The average opponent winrate against Udyris 49.17%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Tryndamere](https://cdn5.lolalytics.com/champx46/tryndamere.webp)
Tryndamere
the Barbarian King
Cassiopeia wins against Tryndamere 51.35% of the time which is 2.86% higher against Tryndamere than the average opponent.
After normalising both champions win rates Cassiopeia wins against Tryndamere 1.98% less often than would be expected.
The average opponent winrate against Tryndamereis 48.49%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Rumble](https://cdn5.lolalytics.com/champx46/rumble.webp)
Rumble
the Mechanized Menace
Cassiopeia wins against Rumble 51.59% of the time which is 2.94% higher against Rumble than the average opponent.
After normalising both champions win rates Cassiopeia wins against Rumble 1.90% less often than would be expected.
The average opponent winrate against Rumbleis 48.65%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Olaf](https://cdn5.lolalytics.com/champx46/olaf.webp)
Olaf
the Berserker
Cassiopeia wins against Olaf 51.99% of the time which is 3.50% higher against Olaf than the average opponent.
After normalising both champions win rates Cassiopeia wins against Olaf 1.34% less often than would be expected.
The average opponent winrate against Olafis 48.49%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Fiora](https://cdn5.lolalytics.com/champx46/fiora.webp)
Fiora
the Grand Duelist
Cassiopeia wins against Fiora 52.15% of the time which is 5.03% higher against Fiora than the average opponent.
After normalising both champions win rates Cassiopeia wins against Fiora 0.19% more often than would be expected.
The average opponent winrate against Fiorais 47.12%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Aatrox](https://cdn5.lolalytics.com/champx46/aatrox.webp)
Aatrox
the Darkin Blade
Cassiopeia wins against Aatrox 52.50% of the time which is 4.33% higher against Aatrox than the average opponent.
After normalising both champions win rates Cassiopeia wins against Aatrox 0.51% less often than would be expected.
The average opponent winrate against Aatroxis 48.17%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Jax](https://cdn5.lolalytics.com/champx46/jax.webp)
Jax
Grandmaster at Arms
Cassiopeia wins against Jax 52.57% of the time which is 4.52% higher against Jax than the average opponent.
After normalising both champions win rates Cassiopeia wins against Jax 0.32% less often than would be expected.
The average opponent winrate against Jaxis 48.05%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Camille](https://cdn5.lolalytics.com/champx46/camille.webp)
Camille
the Steel Shadow
Cassiopeia wins against Camille 52.73% of the time which is 3.43% higher against Camille than the average opponent.
After normalising both champions win rates Cassiopeia wins against Camille 1.41% less often than would be expected.
The average opponent winrate against Camilleis 49.30%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Riven](https://cdn5.lolalytics.com/champx46/riven.webp)
Riven
the Exile
Cassiopeia wins against Riven 53.06% of the time which is 5.68% higher against Riven than the average opponent.
After normalising both champions win rates Cassiopeia wins against Riven 0.84% more often than would be expected.
The average opponent winrate against Rivenis 47.38%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Trundle](https://cdn5.lolalytics.com/champx46/trundle.webp)
Trundle
the Troll King
Cassiopeia wins against Trundle 53.07% of the time which is 5.63% higher against Trundle than the average opponent.
After normalising both champions win rates Cassiopeia wins against Trundle 0.79% more often than would be expected.
The average opponent winrate against Trundleis 47.44%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Kayle](https://cdn5.lolalytics.com/champx46/kayle.webp)
Kayle
the Righteous
Cassiopeia wins against Kayle 53.20% of the time which is 6.12% higher against Kayle than the average opponent.
After normalising both champions win rates Cassiopeia wins against Kayle 1.28% more often than would be expected.
The average opponent winrate against Kayleis 47.08%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Rengar](https://cdn5.lolalytics.com/champx46/rengar.webp)
Rengar
the Pridestalker
Cassiopeia wins against Rengar 53.33% of the time which is 7.42% higher against Rengar than the average opponent.
After normalising both champions win rates Cassiopeia wins against Rengar 2.58% more often than would be expected.
The average opponent winrate against Rengaris 45.91%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Pantheon](https://cdn5.lolalytics.com/champx46/pantheon.webp)
Pantheon
the Unbreakable Spear
Cassiopeia wins against Pantheon 53.77% of the time which is 4.26% higher against Pantheon than the average opponent.
After normalising both champions win rates Cassiopeia wins against Pantheon 0.58% less often than would be expected.
The average opponent winrate against Pantheonis 49.51%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Gnar](https://cdn5.lolalytics.com/champx46/gnar.webp)
Gnar
the Missing Link
Cassiopeia wins against Gnar 53.90% of the time which is 4.90% higher against Gnar than the average opponent.
After normalising both champions win rates Cassiopeia wins against Gnar 0.06% more often than would be expected.
The average opponent winrate against Gnaris 49.00%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Vayne](https://cdn5.lolalytics.com/champx46/vayne.webp)
Vayne
the Night Hunter
Cassiopeia wins against Vayne 53.96% of the time which is 7.04% higher against Vayne than the average opponent.
After normalising both champions win rates Cassiopeia wins against Vayne 2.20% more often than would be expected.
The average opponent winrate against Vayneis 46.92%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Darius](https://cdn5.lolalytics.com/champx46/darius.webp)
Darius
the Hand of Noxus
Cassiopeia wins against Darius 54.15% of the time which is 4.72% higher against Darius than the average opponent.
After normalising both champions win rates Cassiopeia wins against Darius 0.12% less often than would be expected.
The average opponent winrate against Dariusis 49.43%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Irelia](https://cdn5.lolalytics.com/champx46/irelia.webp)
Irelia
the Blade Dancer
Cassiopeia wins against Irelia 54.16% of the time which is 4.97% higher against Irelia than the average opponent.
After normalising both champions win rates Cassiopeia wins against Irelia 0.13% more often than would be expected.
The average opponent winrate against Ireliais 49.19%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Gwen](https://cdn5.lolalytics.com/champx46/gwen.webp)
Gwen
The Hallowed Seamstress
Cassiopeia wins against Gwen 54.25% of the time which is 5.99% higher against Gwen than the average opponent.
After normalising both champions win rates Cassiopeia wins against Gwen 1.15% more often than would be expected.
The average opponent winrate against Gwenis 48.26%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Yone](https://cdn5.lolalytics.com/champx46/yone.webp)
Yone
the Unforgotten
Cassiopeia wins against Yone 54.58% of the time which is 3.69% higher against Yone than the average opponent.
After normalising both champions win rates Cassiopeia wins against Yone 1.14% less often than would be expected.
The average opponent winrate against Yoneis 50.89%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Malphite](https://cdn5.lolalytics.com/champx46/malphite.webp)
Malphite
Shard of the Monolith
Cassiopeia wins against Malphite 55.04% of the time which is 7.29% higher against Malphite than the average opponent.
After normalising both champions win rates Cassiopeia wins against Malphite 2.45% more often than would be expected.
The average opponent winrate against Malphiteis 47.75%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Teemo](https://cdn5.lolalytics.com/champx46/teemo.webp)
Teemo
the Swift Scout
Cassiopeia wins against Teemo 55.22% of the time which is 7.69% higher against Teemo than the average opponent.
After normalising both champions win rates Cassiopeia wins against Teemo 2.85% more often than would be expected.
The average opponent winrate against Teemois 47.53%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Tahm Kench](https://cdn5.lolalytics.com/champx46/tahmkench.webp)
Tahm Kench
The River King
Cassiopeia wins against Tahm Kench 55.28% of the time which is 7.10% higher against Tahm Kench than the average opponent.
After normalising both champions win rates Cassiopeia wins against Tahm Kench 2.26% more often than would be expected.
The average opponent winrate against Tahm Kenchis 48.18%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![K'Sante](https://cdn5.lolalytics.com/champx46/ksante.webp)
K'Sante
the Pride of Nazumah
Cassiopeia wins against K'Sante 55.33% of the time which is 5.04% higher against K'Sante than the average opponent.
After normalising both champions win rates Cassiopeia wins against K'Sante 0.20% more often than would be expected.
The average opponent winrate against K'Santeis 50.29%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Vladimir](https://cdn5.lolalytics.com/champx46/vladimir.webp)
Vladimir
the Crimson Reaper
Cassiopeia wins against Vladimir 55.45% of the time which is 6.95% higher against Vladimir than the average opponent.
After normalising both champions win rates Cassiopeia wins against Vladimir 2.11% more often than would be expected.
The average opponent winrate against Vladimiris 48.50%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Yorick](https://cdn5.lolalytics.com/champx46/yorick.webp)
Yorick
Shepherd of Souls
Cassiopeia wins against Yorick 55.74% of the time which is 4.32% higher against Yorick than the average opponent.
After normalising both champions win rates Cassiopeia wins against Yorick 0.51% less often than would be expected.
The average opponent winrate against Yorickis 51.42%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Ornn](https://cdn5.lolalytics.com/champx46/ornn.webp)
Ornn
The Fire below the Mountain
Cassiopeia wins against Ornn 55.75% of the time which is 6.84% higher against Ornn than the average opponent.
After normalising both champions win rates Cassiopeia wins against Ornn 2.00% more often than would be expected.
The average opponent winrate against Ornnis 48.91%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Gragas](https://cdn5.lolalytics.com/champx46/gragas.webp)
Gragas
the Rabble Rouser
Cassiopeia wins against Gragas 56.76% of the time which is 7.66% higher against Gragas than the average opponent.
After normalising both champions win rates Cassiopeia wins against Gragas 2.82% more often than would be expected.
The average opponent winrate against Gragasis 49.10%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Jayce](https://cdn5.lolalytics.com/champx46/jayce.webp)
Jayce
the Defender of Tomorrow
Cassiopeia wins against Jayce 56.81% of the time which is 5.88% higher against Jayce than the average opponent.
After normalising both champions win rates Cassiopeia wins against Jayce 1.05% more often than would be expected.
The average opponent winrate against Jayceis 50.93%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Renekton](https://cdn5.lolalytics.com/champx46/renekton.webp)
Renekton
the Butcher of the Sands
Cassiopeia wins against Renekton 57.34% of the time which is 5.18% higher against Renekton than the average opponent.
After normalising both champions win rates Cassiopeia wins against Renekton 0.36% more often than would be expected.
The average opponent winrate against Renektonis 52.16%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Garen](https://cdn5.lolalytics.com/champx46/garen.webp)
Garen
The Might of Demacia
Cassiopeia wins against Garen 57.39% of the time which is 5.22% higher against Garen than the average opponent.
After normalising both champions win rates Cassiopeia wins against Garen 0.40% more often than would be expected.
The average opponent winrate against Garenis 52.17%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Sion](https://cdn5.lolalytics.com/champx46/sion.webp)
Sion
The Undead Juggernaut
Cassiopeia wins against Sion 57.42% of the time which is 7.16% higher against Sion than the average opponent.
After normalising both champions win rates Cassiopeia wins against Sion 2.32% more often than would be expected.
The average opponent winrate against Sionis 50.26%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Illaoi](https://cdn5.lolalytics.com/champx46/illaoi.webp)
Illaoi
the Kraken Priestess
Cassiopeia wins against Illaoi 57.53% of the time which is 5.08% higher against Illaoi than the average opponent.
After normalising both champions win rates Cassiopeia wins against Illaoi 0.26% more often than would be expected.
The average opponent winrate against Illaoiis 52.45%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Sett](https://cdn5.lolalytics.com/champx46/sett.webp)
Sett
the Boss
Cassiopeia wins against Sett 57.59% of the time which is 7.40% higher against Sett than the average opponent.
After normalising both champions win rates Cassiopeia wins against Sett 2.56% more often than would be expected.
The average opponent winrate against Settis 50.19%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Urgot](https://cdn5.lolalytics.com/champx46/urgot.webp)
Urgot
the Dreadnought
Cassiopeia wins against Urgot 57.61% of the time which is 10.05% higher against Urgot than the average opponent.
After normalising both champions win rates Cassiopeia wins against Urgot 5.21% more often than would be expected.
The average opponent winrate against Urgotis 47.56%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Kennen](https://cdn5.lolalytics.com/champx46/kennen.webp)
Kennen
the Heart of the Tempest
Cassiopeia wins against Kennen 57.63% of the time which is 9.33% higher against Kennen than the average opponent.
After normalising both champions win rates Cassiopeia wins against Kennen 4.49% more often than would be expected.
The average opponent winrate against Kennenis 48.30%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Dr. Mundo](https://cdn5.lolalytics.com/champx46/drmundo.webp)
Dr. Mundo
the Madman of Zaun
Cassiopeia wins against Dr. Mundo 57.97% of the time which is 7.94% higher against Dr. Mundo than the average opponent.
After normalising both champions win rates Cassiopeia wins against Dr. Mundo 3.10% more often than would be expected.
The average opponent winrate against Dr. Mundois 50.03%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Nasus](https://cdn5.lolalytics.com/champx46/nasus.webp)
Nasus
the Curator of the Sands
Cassiopeia wins against Nasus 58.68% of the time which is 9.93% higher against Nasus than the average opponent.
After normalising both champions win rates Cassiopeia wins against Nasus 5.09% more often than would be expected.
The average opponent winrate against Nasusis 48.75%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Volibear](https://cdn5.lolalytics.com/champx46/volibear.webp)
Volibear
the Relentless Storm
Cassiopeia wins against Volibear 59.30% of the time which is 7.34% higher against Volibear than the average opponent.
After normalising both champions win rates Cassiopeia wins against Volibear 2.52% more often than would be expected.
The average opponent winrate against Volibearis 51.96%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Yasuo](https://cdn5.lolalytics.com/champx46/yasuo.webp)
Yasuo
the Unforgiven
Cassiopeia wins against Yasuo 59.90% of the time which is 9.53% higher against Yasuo than the average opponent.
After normalising both champions win rates Cassiopeia wins against Yasuo 4.69% more often than would be expected.
The average opponent winrate against Yasuois 50.37%.
![Cassiopeia](https://cdn5.lolalytics.com/champx46/cassiopeia.webp)
![Sylas](https://cdn5.lolalytics.com/champx46/sylas.webp)
Sylas
the Unshackled
Cassiopeia wins against Sylas 62.83% of the time which is 13.54% higher against Sylas than the average opponent.
After normalising both champions win rates Cassiopeia wins against Sylas 8.70% more often than would be expected.
The average opponent winrate against Sylasis 49.29%.