

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.
Bronze Champions Analysed: 36,894,426
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.


Senna Counters
Senna support vs support Counters
Senna support on Patch 30 is the strongest counter to support champions of Caitlyn, Mordekaiser & Garen. While Senna support is countered most by support champions of Yorick, Vex & Nami. Below is a detailed breakdown of Senna support counters against support champions with a minimum of 100 games.


Yorick
Berger des âmes
Senna wins against Yorick 43.70% of the time which is 8.41% lower against Yorick than the average opponent.
After normalising both champions win rates Senna wins against Yorick 7.19% less often than would be expected.
The average opponent winrate against Yorick is 52.11%.


Vex
Ombre du désespoir
Senna wins against Vex 44.60% of the time which is 6.70% lower against Vex than the average opponent.
After normalising both champions win rates Senna wins against Vex 5.48% less often than would be expected.
The average opponent winrate against Vex is 51.30%.


Nami
Aquamancienne
Senna wins against Nami 44.86% of the time which is 4.00% lower against Nami than the average opponent.
After normalising both champions win rates Senna wins against Nami 2.78% less often than would be expected.
The average opponent winrate against Nami is 48.86%.


LeBlanc
Manipulatrice
Senna wins against LeBlanc 45.02% of the time which is 5.34% lower against LeBlanc than the average opponent.
After normalising both champions win rates Senna wins against LeBlanc 4.12% less often than would be expected.
The average opponent winrate against LeBlanc is 50.36%.


Zyra
Dame aux ronces
Senna wins against Zyra 45.19% of the time which is 2.71% lower against Zyra than the average opponent.
After normalising both champions win rates Senna wins against Zyra 1.49% less often than would be expected.
The average opponent winrate against Zyra is 47.90%.


Amumu
Momie mélancolique
Senna wins against Amumu 45.29% of the time which is 4.13% lower against Amumu than the average opponent.
After normalising both champions win rates Senna wins against Amumu 2.91% less often than would be expected.
The average opponent winrate against Amumu is 49.42%.


Jarvan IV
Exemple demacien
Senna wins against Jarvan IV 45.81% of the time which is 3.78% lower against Jarvan IV than the average opponent.
After normalising both champions win rates Senna wins against Jarvan IV 2.56% less often than would be expected.
The average opponent winrate against Jarvan IV is 49.59%.


Vel'Koz
Œil du Néant
Senna wins against Vel'Koz 46.46% of the time which is 2.14% lower against Vel'Koz than the average opponent.
After normalising both champions win rates Senna wins against Vel'Koz 0.92% less often than would be expected.
The average opponent winrate against Vel'Koz is 48.60%.


Maokai
Tréant torturé
Senna wins against Maokai 46.69% of the time which is 2.11% lower against Maokai than the average opponent.
After normalising both champions win rates Senna wins against Maokai 0.89% less often than would be expected.
The average opponent winrate against Maokai is 48.80%.


Malzahar
Prophète du Néant
Senna wins against Malzahar 46.82% of the time which is 4.76% lower against Malzahar than the average opponent.
After normalising both champions win rates Senna wins against Malzahar 3.54% less often than would be expected.
The average opponent winrate against Malzahar is 51.58%.


Swain
Grand général noxien
Senna wins against Swain 46.95% of the time which is 1.80% lower against Swain than the average opponent.
After normalising both champions win rates Senna wins against Swain 0.58% less often than would be expected.
The average opponent winrate against Swain is 48.75%.


Shaco
Bouffon des ténèbres
Senna wins against Shaco 47.02% of the time which is 1.59% lower against Shaco than the average opponent.
After normalising both champions win rates Senna wins against Shaco 0.37% less often than would be expected.
The average opponent winrate against Shaco is 48.61%.


Sion
Colosse mort-vivant
Senna wins against Sion 47.19% of the time which is 1.39% lower against Sion than the average opponent.
After normalising both champions win rates Senna wins against Sion 0.17% less often than would be expected.
The average opponent winrate against Sion is 48.58%.


Milio
Douce flamme
Senna wins against Milio 47.21% of the time which is 1.32% lower against Milio than the average opponent.
After normalising both champions win rates Senna wins against Milio 0.10% less often than would be expected.
The average opponent winrate against Milio is 48.53%.


Soraka
Enfant des étoiles
Senna wins against Soraka 47.33% of the time which is 2.08% lower against Soraka than the average opponent.
After normalising both champions win rates Senna wins against Soraka 0.86% less often than would be expected.
The average opponent winrate against Soraka is 49.41%.


Brand
Vengeur flamboyant
Senna wins against Brand 47.48% of the time which is 0.74% lower against Brand than the average opponent.
After normalising both champions win rates Senna wins against Brand 0.48% more often than would be expected.
The average opponent winrate against Brand is 48.22%.


Xerath
Mage suprême
Senna wins against Xerath 47.55% of the time which is 1.80% lower against Xerath than the average opponent.
After normalising both champions win rates Senna wins against Xerath 0.58% less often than would be expected.
The average opponent winrate against Xerath is 49.35%.


Teemo
Éclaireur de Bandle
Senna wins against Teemo 47.59% of the time which is 0.94% higher against Teemo than the average opponent.
After normalising both champions win rates Senna wins against Teemo 2.15% more often than would be expected.
The average opponent winrate against Teemo is 46.65%.


Lux
Dame de lumière
Senna wins against Lux 47.72% of the time which is 1.54% lower against Lux than the average opponent.
After normalising both champions win rates Senna wins against Lux 0.32% less often than would be expected.
The average opponent winrate against Lux is 49.26%.


Thresh
Garde aux chaînes
Senna wins against Thresh 47.89% of the time which is 2.80% lower against Thresh than the average opponent.
After normalising both champions win rates Senna wins against Thresh 1.58% less often than would be expected.
The average opponent winrate against Thresh is 50.69%.


Fiddlesticks
Effroi nocturne
Senna wins against Fiddlesticks 48.03% of the time which is 0.95% lower against Fiddlesticks than the average opponent.
After normalising both champions win rates Senna wins against Fiddlesticks 0.27% more often than would be expected.
The average opponent winrate against Fiddlesticks is 48.98%.


Vi
Cogne de Piltover
Senna wins against Vi 48.15% of the time which is 5.00% lower against Vi than the average opponent.
After normalising both champions win rates Senna wins against Vi 3.78% less often than would be expected.
The average opponent winrate against Vi is 53.15%.


Renata Glasc
Baronne de la chimie
Senna wins against Renata Glasc 48.31% of the time which is 3.26% lower against Renata Glasc than the average opponent.
After normalising both champions win rates Senna wins against Renata Glasc 2.04% less often than would be expected.
The average opponent winrate against Renata Glasc is 51.57%.


Nidalee
Chasseresse bestiale
Senna wins against Nidalee 48.33% of the time which is 5.14% lower against Nidalee than the average opponent.
After normalising both champions win rates Senna wins against Nidalee 3.92% less often than would be expected.
The average opponent winrate against Nidalee is 53.47%.


Shen
Œil du crépuscule
Senna wins against Shen 48.45% of the time which is 0.77% lower against Shen than the average opponent.
After normalising both champions win rates Senna wins against Shen 0.45% more often than would be expected.
The average opponent winrate against Shen is 49.22%.


Gragas
Agitateur
Senna wins against Gragas 48.52% of the time which is 4.69% lower against Gragas than the average opponent.
After normalising both champions win rates Senna wins against Gragas 3.47% less often than would be expected.
The average opponent winrate against Gragas is 53.21%.


Karma
Sagesse incarnée
Senna wins against Karma 48.61% of the time which is 2.77% lower against Karma than the average opponent.
After normalising both champions win rates Senna wins against Karma 1.55% less often than would be expected.
The average opponent winrate against Karma is 51.38%.


Leona
Aube radieuse
Senna wins against Leona 48.72% of the time which is 1.43% lower against Leona than the average opponent.
After normalising both champions win rates Senna wins against Leona 0.21% less often than would be expected.
The average opponent winrate against Leona is 50.15%.


Pyke
Éventreur des abysses
Senna wins against Pyke 48.86% of the time which is 3.23% lower against Pyke than the average opponent.
After normalising both champions win rates Senna wins against Pyke 2.01% less often than would be expected.
The average opponent winrate against Pyke is 52.09%.


Taric
Bouclier de Valoran
Senna wins against Taric 48.94% of the time which is 1.41% higher against Taric than the average opponent.
After normalising both champions win rates Senna wins against Taric 2.63% more often than would be expected.
The average opponent winrate against Taric is 47.53%.


Morgana
Déchue
Senna wins against Morgana 48.97% of the time which is 0.52% higher against Morgana than the average opponent.
After normalising both champions win rates Senna wins against Morgana 1.74% more often than would be expected.
The average opponent winrate against Morgana is 48.45%.


Darius
Main de Noxus
Senna wins against Darius 49.11% of the time which is 5.46% lower against Darius than the average opponent.
After normalising both champions win rates Senna wins against Darius 4.25% less often than would be expected.
The average opponent winrate against Darius is 54.57%.


Zac
Arme secrète
Senna wins against Zac 49.15% of the time which is 0.25% lower against Zac than the average opponent.
After normalising both champions win rates Senna wins against Zac 0.97% more often than would be expected.
The average opponent winrate against Zac is 49.40%.


Blitzcrank
Golem de vapeur
Senna wins against Blitzcrank 49.18% of the time which is 2.38% lower against Blitzcrank than the average opponent.
After normalising both champions win rates Senna wins against Blitzcrank 1.16% less often than would be expected.
The average opponent winrate against Blitzcrank is 51.56%.


Bard
Gardien errant
Senna wins against Bard 49.27% of the time which is 2.74% lower against Bard than the average opponent.
After normalising both champions win rates Senna wins against Bard 1.52% less often than would be expected.
The average opponent winrate against Bard is 52.01%.


Veigar
Seigneur des maléfices
Senna wins against Veigar 49.31% of the time which is 1.17% lower against Veigar than the average opponent.
After normalising both champions win rates Senna wins against Veigar 0.05% more often than would be expected.
The average opponent winrate against Veigar is 50.48%.


Yuumi
Gardienne du Grimoire
Senna wins against Yuumi 49.39% of the time which is 0.72% lower against Yuumi than the average opponent.
After normalising both champions win rates Senna wins against Yuumi 0.50% more often than would be expected.
The average opponent winrate against Yuumi is 50.11%.


Zilean
Gardien du Temps
Senna wins against Zilean 49.43% of the time which is 0.72% lower against Zilean than the average opponent.
After normalising both champions win rates Senna wins against Zilean 0.50% more often than would be expected.
The average opponent winrate against Zilean is 50.15%.


Poppy
Gardienne du marteau
Senna wins against Poppy 49.44% of the time which is 0.06% higher against Poppy than the average opponent.
After normalising both champions win rates Senna wins against Poppy 1.28% more often than would be expected.
The average opponent winrate against Poppy is 49.38%.


Nautilus
Titan des profondeurs
Senna wins against Nautilus 49.45% of the time which is 1.56% lower against Nautilus than the average opponent.
After normalising both champions win rates Senna wins against Nautilus 0.34% less often than would be expected.
The average opponent winrate against Nautilus is 51.01%.


Séraphine
Chanteuse rêveuse
Senna wins against Séraphine 49.48% of the time which is 0.31% lower against Séraphine than the average opponent.
After normalising both champions win rates Senna wins against Séraphine 0.91% more often than would be expected.
The average opponent winrate against Séraphine is 49.79%.


Twisted Fate
Maître des cartes
Senna wins against Twisted Fate 49.56% of the time which is 4.92% lower against Twisted Fate than the average opponent.
After normalising both champions win rates Senna wins against Twisted Fate 3.71% less often than would be expected.
The average opponent winrate against Twisted Fate is 54.48%.


Ahri
Renard à neuf queues
Senna wins against Ahri 49.56% of the time which is 0.62% lower against Ahri than the average opponent.
After normalising both champions win rates Senna wins against Ahri 0.60% more often than would be expected.
The average opponent winrate against Ahri is 50.18%.


Lulu
Sorcière féérique
Senna wins against Lulu 49.58% of the time which is 1.42% lower against Lulu than the average opponent.
After normalising both champions win rates Senna wins against Lulu 0.20% less often than would be expected.
The average opponent winrate against Lulu is 51.00%.


Elise
Reine araignée
Senna wins against Elise 49.59% of the time which is 3.11% lower against Elise than the average opponent.
After normalising both champions win rates Senna wins against Elise 1.89% less often than would be expected.
The average opponent winrate against Elise is 52.70%.


Ivern
Aîné de la forêt
Senna wins against Ivern 49.62% of the time which is 4.18% lower against Ivern than the average opponent.
After normalising both champions win rates Senna wins against Ivern 2.96% less often than would be expected.
The average opponent winrate against Ivern is 53.80%.


Pantheon
Lance éternelle
Senna wins against Pantheon 49.72% of the time which is 0.54% lower against Pantheon than the average opponent.
After normalising both champions win rates Senna wins against Pantheon 0.68% more often than would be expected.
The average opponent winrate against Pantheon is 50.26%.


Rell
Vierge de fer
Senna wins against Rell 50.02% of the time which is 0.29% higher against Rell than the average opponent.
After normalising both champions win rates Senna wins against Rell 1.51% more often than would be expected.
The average opponent winrate against Rell is 49.73%.


Janna
Avatar de l'air
Senna wins against Janna 50.08% of the time which is 0.20% higher against Janna than the average opponent.
After normalising both champions win rates Senna wins against Janna 1.42% more often than would be expected.
The average opponent winrate against Janna is 49.88%.


Braum
Cœur de Freljord
Senna wins against Braum 50.16% of the time which is 0.48% higher against Braum than the average opponent.
After normalising both champions win rates Senna wins against Braum 1.70% more often than would be expected.
The average opponent winrate against Braum is 49.68%.


Zoé
Manifestation du Crépuscule
Senna wins against Zoé 50.23% of the time which is 0.78% lower against Zoé than the average opponent.
After normalising both champions win rates Senna wins against Zoé 0.44% more often than would be expected.
The average opponent winrate against Zoé is 51.01%.


Hwei
Visionnaire
Senna wins against Hwei 50.26% of the time which is 0.42% lower against Hwei than the average opponent.
After normalising both champions win rates Senna wins against Hwei 0.80% more often than would be expected.
The average opponent winrate against Hwei is 50.68%.


Sona
Virtuose de la harpe
Senna wins against Sona 50.38% of the time which is 2.05% higher against Sona than the average opponent.
After normalising both champions win rates Senna wins against Sona 3.27% more often than would be expected.
The average opponent winrate against Sona is 48.33%.


Ashe
Archère de givre
Senna wins against Ashe 50.44% of the time which is 4.08% lower against Ashe than the average opponent.
After normalising both champions win rates Senna wins against Ashe 2.87% less often than would be expected.
The average opponent winrate against Ashe is 54.52%.


Wukong
Roi des singes
Senna wins against Wukong 50.44% of the time which is 0.23% lower against Wukong than the average opponent.
After normalising both champions win rates Senna wins against Wukong 0.99% more often than would be expected.
The average opponent winrate against Wukong is 50.67%.


Alistar
Minotaure
Senna wins against Alistar 50.72% of the time which is 0.04% lower against Alistar than the average opponent.
After normalising both champions win rates Senna wins against Alistar 1.18% more often than would be expected.
The average opponent winrate against Alistar is 50.76%.


Tahm Kench
Roi des rivières
Senna wins against Tahm Kench 51.21% of the time which is 0.91% higher against Tahm Kench than the average opponent.
After normalising both champions win rates Senna wins against Tahm Kench 2.13% more often than would be expected.
The average opponent winrate against Tahm Kench is 50.30%.


Neeko
Caméléon curieux
Senna wins against Neeko 51.28% of the time which is 0.74% higher against Neeko than the average opponent.
After normalising both champions win rates Senna wins against Neeko 1.96% more often than would be expected.
The average opponent winrate against Neeko is 50.54%.


Rammus
Tatou blindé
Senna wins against Rammus 51.46% of the time which is 2.99% higher against Rammus than the average opponent.
After normalising both champions win rates Senna wins against Rammus 4.21% more often than would be expected.
The average opponent winrate against Rammus is 48.47%.


Malphite
Éclat du monolithe
Senna wins against Malphite 51.69% of the time which is 1.13% higher against Malphite than the average opponent.
After normalising both champions win rates Senna wins against Malphite 2.35% more often than would be expected.
The average opponent winrate against Malphite is 50.56%.


Lee Sin
Moine aveugle
Senna wins against Lee Sin 51.84% of the time which is 2.94% lower against Lee Sin than the average opponent.
After normalising both champions win rates Senna wins against Lee Sin 1.73% less often than would be expected.
The average opponent winrate against Lee Sin is 54.78%.


Sylas
Révolutionnaire déchaîné
Senna wins against Sylas 51.97% of the time which is 0.97% higher against Sylas than the average opponent.
After normalising both champions win rates Senna wins against Sylas 2.19% more often than would be expected.
The average opponent winrate against Sylas is 51.00%.


Heimerdinger
Inventeur réputé
Senna wins against Heimerdinger 51.98% of the time which is 2.94% higher against Heimerdinger than the average opponent.
After normalising both champions win rates Senna wins against Heimerdinger 4.16% more often than would be expected.
The average opponent winrate against Heimerdinger is 49.04%.


Sett
Patron
Senna wins against Sett 52.03% of the time which is 3.08% higher against Sett than the average opponent.
After normalising both champions win rates Senna wins against Sett 4.30% more often than would be expected.
The average opponent winrate against Sett is 48.95%.


Ornn
Dieu de la forge volcanique
Senna wins against Ornn 52.05% of the time which is 0.46% lower against Ornn than the average opponent.
After normalising both champions win rates Senna wins against Ornn 0.76% more often than would be expected.
The average opponent winrate against Ornn is 52.51%.


Dr. Mundo
Dément de Zaun
Senna wins against Dr. Mundo 52.26% of the time which is 1.32% higher against Dr. Mundo than the average opponent.
After normalising both champions win rates Senna wins against Dr. Mundo 2.54% more often than would be expected.
The average opponent winrate against Dr. Mundo is 50.94%.


Twitch
Semeur de peste
Senna wins against Twitch 52.35% of the time which is 4.58% lower against Twitch than the average opponent.
After normalising both champions win rates Senna wins against Twitch 3.38% less often than would be expected.
The average opponent winrate against Twitch is 56.93%.


Ziggs
Expert des Hexplosifs
Senna wins against Ziggs 52.35% of the time which is 0.60% higher against Ziggs than the average opponent.
After normalising both champions win rates Senna wins against Ziggs 1.82% more often than would be expected.
The average opponent winrate against Ziggs is 51.75%.


Lissandra
Sorcière de glace
Senna wins against Lissandra 52.42% of the time which is 0.97% higher against Lissandra than the average opponent.
After normalising both champions win rates Senna wins against Lissandra 2.19% more often than would be expected.
The average opponent winrate against Lissandra is 51.45%.


Camille
Ombre d'acier
Senna wins against Camille 52.47% of the time which is 1.63% lower against Camille than the average opponent.
After normalising both champions win rates Senna wins against Camille 0.41% less often than would be expected.
The average opponent winrate against Camille is 54.10%.


Mel
Reflet de l'âme
Senna wins against Mel 52.75% of the time which is 0.60% lower against Mel than the average opponent.
After normalising both champions win rates Senna wins against Mel 0.62% more often than would be expected.
The average opponent winrate against Mel is 53.35%.


Rakan
Charmeur
Senna wins against Rakan 52.94% of the time which is 1.43% higher against Rakan than the average opponent.
After normalising both champions win rates Senna wins against Rakan 2.65% more often than would be expected.
The average opponent winrate against Rakan is 51.51%.


Quinn
Ailes de Demacia
Senna wins against Quinn 53.33% of the time which is 3.39% higher against Quinn than the average opponent.
After normalising both champions win rates Senna wins against Quinn 4.61% more often than would be expected.
The average opponent winrate against Quinn is 49.94%.


Cho'Gath
Terreur noire
Senna wins against Cho'Gath 54.47% of the time which is 3.51% higher against Cho'Gath than the average opponent.
After normalising both champions win rates Senna wins against Cho'Gath 4.73% more often than would be expected.
The average opponent winrate against Cho'Gath is 50.96%.


Galio
Colosse
Senna wins against Galio 54.83% of the time which is 5.20% higher against Galio than the average opponent.
After normalising both champions win rates Senna wins against Galio 6.42% more often than would be expected.
The average opponent winrate against Galio is 49.63%.


Syndra
Souveraine obscure
Senna wins against Syndra 55.08% of the time which is 0.96% higher against Syndra than the average opponent.
After normalising both champions win rates Senna wins against Syndra 2.18% more often than would be expected.
The average opponent winrate against Syndra is 54.12%.


Nunu et Willump
Le Garçon et son yéti
Senna wins against Nunu et Willump 56.60% of the time which is 0.56% higher against Nunu et Willump than the average opponent.
After normalising both champions win rates Senna wins against Nunu et Willump 1.77% more often than would be expected.
The average opponent winrate against Nunu et Willump is 56.04%.


Miss Fortune
Chasseuse de primes
Senna wins against Miss Fortune 56.90% of the time which is 1.19% higher against Miss Fortune than the average opponent.
After normalising both champions win rates Senna wins against Miss Fortune 2.40% more often than would be expected.
The average opponent winrate against Miss Fortune is 55.71%.


Annie
Enfant des ténèbres
Senna wins against Annie 57.00% of the time which is 7.26% higher against Annie than the average opponent.
After normalising both champions win rates Senna wins against Annie 8.48% more often than would be expected.
The average opponent winrate against Annie is 49.74%.


Trundle
Roi des trolls
Senna wins against Trundle 57.43% of the time which is 2.41% higher against Trundle than the average opponent.
After normalising both champions win rates Senna wins against Trundle 3.62% more often than would be expected.
The average opponent winrate against Trundle is 55.02%.


Singed
Chimiste fou
Senna wins against Singed 58.04% of the time which is 7.73% higher against Singed than the average opponent.
After normalising both champions win rates Senna wins against Singed 8.95% more often than would be expected.
The average opponent winrate against Singed is 50.31%.


Orianna
Demoiselle mécanique
Senna wins against Orianna 58.33% of the time which is 5.12% higher against Orianna than the average opponent.
After normalising both champions win rates Senna wins against Orianna 6.34% more often than would be expected.
The average opponent winrate against Orianna is 53.21%.


Sejuani
Fureur du nord
Senna wins against Sejuani 58.33% of the time which is 6.53% higher against Sejuani than the average opponent.
After normalising both champions win rates Senna wins against Sejuani 7.75% more often than would be expected.
The average opponent winrate against Sejuani is 51.80%.


Anivia
Cryophénix
Senna wins against Anivia 58.46% of the time which is 5.33% higher against Anivia than the average opponent.
After normalising both champions win rates Senna wins against Anivia 6.55% more often than would be expected.
The average opponent winrate against Anivia is 53.13%.


Yasuo
Disgracié
Senna wins against Yasuo 59.20% of the time which is 2.51% higher against Yasuo than the average opponent.
After normalising both champions win rates Senna wins against Yasuo 3.72% more often than would be expected.
The average opponent winrate against Yasuo is 56.69%.


Jhin
Virtuose
Senna wins against Jhin 59.48% of the time which is 1.15% higher against Jhin than the average opponent.
After normalising both champions win rates Senna wins against Jhin 2.35% more often than would be expected.
The average opponent winrate against Jhin is 58.33%.


Varus
Flèche de la vengeance
Senna wins against Varus 60.48% of the time which is 2.10% higher against Varus than the average opponent.
After normalising both champions win rates Senna wins against Varus 3.30% more often than would be expected.
The average opponent winrate against Varus is 58.38%.


Ezreal
Explorateur prodigue
Senna wins against Ezreal 61.34% of the time which is 0.70% higher against Ezreal than the average opponent.
After normalising both champions win rates Senna wins against Ezreal 1.88% more often than would be expected.
The average opponent winrate against Ezreal is 60.64%.


Garen
Force de Demacia
Senna wins against Garen 64.10% of the time which is 5.71% higher against Garen than the average opponent.
After normalising both champions win rates Senna wins against Garen 6.91% more often than would be expected.
The average opponent winrate against Garen is 58.39%.


Mordekaiser
Revenant de fer
Senna wins against Mordekaiser 64.71% of the time which is 10.04% higher against Mordekaiser than the average opponent.
After normalising both champions win rates Senna wins against Mordekaiser 11.25% more often than would be expected.
The average opponent winrate against Mordekaiser is 54.67%.


Caitlyn
Shérif de Piltover
Senna wins against Caitlyn 67.14% of the time which is 6.03% higher against Caitlyn than the average opponent.
After normalising both champions win rates Senna wins against Caitlyn 7.21% more often than would be expected.
The average opponent winrate against Caitlyn is 61.11%.