

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.
Iron Champions Analysed: 5,616,827
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 middle Counters
Senna support on Patch 15.16 is the strongest counter to middle champions of Kassadin, Azir & Mel. While Senna support is countered most by middle champions of Teemo, Swain & Vel'Koz. Below is a detailed breakdown of Senna support counters against middle champions with a minimum of 100 games.


Teemo
the Swift Scout
Senna wins against Teemo 30.19% of the time which is 21.80% lower against Teemo than the average opponent.
After normalising both champions win rates Senna wins against Teemo 11.40% less often than would be expected.
The average opponent winrate against Teemo is 51.99%.


Swain
the Noxian Grand General
Senna wins against Swain 34.44% of the time which is 17.10% lower against Swain than the average opponent.
After normalising both champions win rates Senna wins against Swain 6.70% less often than would be expected.
The average opponent winrate against Swain is 51.54%.


Vel'Koz
the Eye of the Void
Senna wins against Vel'Koz 35.34% of the time which is 18.12% lower against Vel'Koz than the average opponent.
After normalising both champions win rates Senna wins against Vel'Koz 7.71% less often than would be expected.
The average opponent winrate against Vel'Koz is 53.46%.


Viktor
the Herald of the Arcane
Senna wins against Viktor 35.42% of the time which is 18.61% lower against Viktor than the average opponent.
After normalising both champions win rates Senna wins against Viktor 8.21% less often than would be expected.
The average opponent winrate against Viktor is 54.03%.


Aurelion Sol
The Star Forger
Senna wins against Aurelion Sol 36.33% of the time which is 16.56% lower against Aurelion Sol than the average opponent.
After normalising both champions win rates Senna wins against Aurelion Sol 6.15% less often than would be expected.
The average opponent winrate against Aurelion Sol is 52.89%.


Morgana
the Fallen
Senna wins against Morgana 38.13% of the time which is 13.18% lower against Morgana than the average opponent.
After normalising both champions win rates Senna wins against Morgana 2.78% less often than would be expected.
The average opponent winrate against Morgana is 51.31%.


Veigar
the Tiny Master of Evil
Senna wins against Veigar 38.84% of the time which is 12.77% lower against Veigar than the average opponent.
After normalising both champions win rates Senna wins against Veigar 2.37% less often than would be expected.
The average opponent winrate against Veigar is 51.61%.


Ryze
the Rune Mage
Senna wins against Ryze 39.22% of the time which is 15.03% lower against Ryze than the average opponent.
After normalising both champions win rates Senna wins against Ryze 4.63% less often than would be expected.
The average opponent winrate against Ryze is 54.25%.


Akshan
the Rogue Sentinel
Senna wins against Akshan 39.37% of the time which is 16.59% lower against Akshan than the average opponent.
After normalising both champions win rates Senna wins against Akshan 6.20% less often than would be expected.
The average opponent winrate against Akshan is 55.96%.


Irelia
the Blade Dancer
Senna wins against Irelia 39.47% of the time which is 15.00% lower against Irelia than the average opponent.
After normalising both champions win rates Senna wins against Irelia 4.60% less often than would be expected.
The average opponent winrate against Irelia is 54.47%.


Hwei
the Visionary
Senna wins against Hwei 39.87% of the time which is 14.62% lower against Hwei than the average opponent.
After normalising both champions win rates Senna wins against Hwei 4.22% less often than would be expected.
The average opponent winrate against Hwei is 54.49%.


Lux
the Lady of Luminosity
Senna wins against Lux 40.44% of the time which is 11.49% lower against Lux than the average opponent.
After normalising both champions win rates Senna wins against Lux 1.09% less often than would be expected.
The average opponent winrate against Lux is 51.93%.


Malphite
Shard of the Monolith
Senna wins against Malphite 40.46% of the time which is 11.82% lower against Malphite than the average opponent.
After normalising both champions win rates Senna wins against Malphite 1.42% less often than would be expected.
The average opponent winrate against Malphite is 52.28%.


Xerath
the Magus Ascendant
Senna wins against Xerath 40.75% of the time which is 11.44% lower against Xerath than the average opponent.
After normalising both champions win rates Senna wins against Xerath 1.04% less often than would be expected.
The average opponent winrate against Xerath is 52.19%.


Fizz
the Tidal Trickster
Senna wins against Fizz 40.89% of the time which is 12.59% lower against Fizz than the average opponent.
After normalising both champions win rates Senna wins against Fizz 2.18% less often than would be expected.
The average opponent winrate against Fizz is 53.48%.


Yasuo
the Unforgiven
Senna wins against Yasuo 41.33% of the time which is 11.63% lower against Yasuo than the average opponent.
After normalising both champions win rates Senna wins against Yasuo 1.22% less often than would be expected.
The average opponent winrate against Yasuo is 52.96%.


Katarina
the Sinister Blade
Senna wins against Katarina 41.40% of the time which is 14.68% lower against Katarina than the average opponent.
After normalising both champions win rates Senna wins against Katarina 4.30% less often than would be expected.
The average opponent winrate against Katarina is 56.08%.


Brand
the Burning Vengeance
Senna wins against Brand 41.49% of the time which is 10.82% lower against Brand than the average opponent.
After normalising both champions win rates Senna wins against Brand 0.42% less often than would be expected.
The average opponent winrate against Brand is 52.31%.


Malzahar
the Prophet of the Void
Senna wins against Malzahar 41.99% of the time which is 9.22% lower against Malzahar than the average opponent.
After normalising both champions win rates Senna wins against Malzahar 1.18% more often than would be expected.
The average opponent winrate against Malzahar is 51.21%.


Anivia
the Cryophoenix
Senna wins against Anivia 42.20% of the time which is 11.56% lower against Anivia than the average opponent.
After normalising both champions win rates Senna wins against Anivia 1.16% less often than would be expected.
The average opponent winrate against Anivia is 53.76%.


Diana
Scorn of the Moon
Senna wins against Diana 42.34% of the time which is 10.72% lower against Diana than the average opponent.
After normalising both champions win rates Senna wins against Diana 0.31% less often than would be expected.
The average opponent winrate against Diana is 53.06%.


Galio
the Colossus
Senna wins against Galio 42.42% of the time which is 9.37% lower against Galio than the average opponent.
After normalising both champions win rates Senna wins against Galio 1.03% more often than would be expected.
The average opponent winrate against Galio is 51.79%.


Heimerdinger
the Revered Inventor
Senna wins against Heimerdinger 42.57% of the time which is 7.57% lower against Heimerdinger than the average opponent.
After normalising both champions win rates Senna wins against Heimerdinger 2.81% more often than would be expected.
The average opponent winrate against Heimerdinger is 50.14%.


Akali
the Rogue Assassin
Senna wins against Akali 42.75% of the time which is 11.15% lower against Akali than the average opponent.
After normalising both champions win rates Senna wins against Akali 0.75% less often than would be expected.
The average opponent winrate against Akali is 53.90%.


Ekko
the Boy Who Shattered Time
Senna wins against Ekko 42.82% of the time which is 9.86% lower against Ekko than the average opponent.
After normalising both champions win rates Senna wins against Ekko 0.55% more often than would be expected.
The average opponent winrate against Ekko is 52.68%.


Naafiri
the Hound of a Hundred Bites
Senna wins against Naafiri 43.08% of the time which is 8.47% lower against Naafiri than the average opponent.
After normalising both champions win rates Senna wins against Naafiri 1.93% more often than would be expected.
The average opponent winrate against Naafiri is 51.55%.


Talon
the Blade's Shadow
Senna wins against Talon 44.37% of the time which is 10.53% lower against Talon than the average opponent.
After normalising both champions win rates Senna wins against Talon 0.13% less often than would be expected.
The average opponent winrate against Talon is 54.90%.


Pantheon
the Unbreakable Spear
Senna wins against Pantheon 44.44% of the time which is 8.23% lower against Pantheon than the average opponent.
After normalising both champions win rates Senna wins against Pantheon 2.18% more often than would be expected.
The average opponent winrate against Pantheon is 52.67%.


Twisted Fate
the Card Master
Senna wins against Twisted Fate 44.62% of the time which is 11.68% lower against Twisted Fate than the average opponent.
After normalising both champions win rates Senna wins against Twisted Fate 1.30% less often than would be expected.
The average opponent winrate against Twisted Fate is 56.30%.


Ahri
the Nine-Tailed Fox
Senna wins against Ahri 45.14% of the time which is 9.40% lower against Ahri than the average opponent.
After normalising both champions win rates Senna wins against Ahri 1.00% more often than would be expected.
The average opponent winrate against Ahri is 54.54%.


Zoe
the Aspect of Twilight
Senna wins against Zoe 45.17% of the time which is 10.82% lower against Zoe than the average opponent.
After normalising both champions win rates Senna wins against Zoe 0.43% less often than would be expected.
The average opponent winrate against Zoe is 55.99%.


Ziggs
the Hexplosives Expert
Senna wins against Ziggs 45.73% of the time which is 6.99% lower against Ziggs than the average opponent.
After normalising both champions win rates Senna wins against Ziggs 3.42% more often than would be expected.
The average opponent winrate against Ziggs is 52.72%.


Vex
the Gloomist
Senna wins against Vex 45.87% of the time which is 8.04% lower against Vex than the average opponent.
After normalising both champions win rates Senna wins against Vex 2.36% more often than would be expected.
The average opponent winrate against Vex is 53.91%.


Yone
the Unforgotten
Senna wins against Yone 45.94% of the time which is 8.62% lower against Yone than the average opponent.
After normalising both champions win rates Senna wins against Yone 1.78% more often than would be expected.
The average opponent winrate against Yone is 54.56%.


Cassiopeia
the Serpent's Embrace
Senna wins against Cassiopeia 46.10% of the time which is 8.66% lower against Cassiopeia than the average opponent.
After normalising both champions win rates Senna wins against Cassiopeia 1.74% more often than would be expected.
The average opponent winrate against Cassiopeia is 54.76%.


Lissandra
the Ice Witch
Senna wins against Lissandra 46.15% of the time which is 7.45% lower against Lissandra than the average opponent.
After normalising both champions win rates Senna wins against Lissandra 2.96% more often than would be expected.
The average opponent winrate against Lissandra is 53.60%.


Annie
the Dark Child
Senna wins against Annie 46.46% of the time which is 8.65% lower against Annie than the average opponent.
After normalising both champions win rates Senna wins against Annie 1.75% more often than would be expected.
The average opponent winrate against Annie is 55.11%.


Neeko
the Curious Chameleon
Senna wins against Neeko 46.62% of the time which is 6.84% lower against Neeko than the average opponent.
After normalising both champions win rates Senna wins against Neeko 3.57% more often than would be expected.
The average opponent winrate against Neeko is 53.46%.


Orianna
the Lady of Clockwork
Senna wins against Orianna 46.73% of the time which is 7.88% lower against Orianna than the average opponent.
After normalising both champions win rates Senna wins against Orianna 2.52% more often than would be expected.
The average opponent winrate against Orianna is 54.61%.


Vladimir
the Crimson Reaper
Senna wins against Vladimir 47.08% of the time which is 7.70% lower against Vladimir than the average opponent.
After normalising both champions win rates Senna wins against Vladimir 2.70% more often than would be expected.
The average opponent winrate against Vladimir is 54.78%.


Aurora
the Witch Between Worlds
Senna wins against Aurora 47.25% of the time which is 8.02% lower against Aurora than the average opponent.
After normalising both champions win rates Senna wins against Aurora 2.37% more often than would be expected.
The average opponent winrate against Aurora is 55.27%.


LeBlanc
the Deceiver
Senna wins against LeBlanc 47.35% of the time which is 7.90% lower against LeBlanc than the average opponent.
After normalising both champions win rates Senna wins against LeBlanc 2.49% more often than would be expected.
The average opponent winrate against LeBlanc is 55.25%.


Sylas
the Unshackled
Senna wins against Sylas 47.51% of the time which is 8.18% lower against Sylas than the average opponent.
After normalising both champions win rates Senna wins against Sylas 2.21% more often than would be expected.
The average opponent winrate against Sylas is 55.69%.


Qiyana
Empress of the Elements
Senna wins against Qiyana 48.21% of the time which is 10.43% lower against Qiyana than the average opponent.
After normalising both champions win rates Senna wins against Qiyana 0.10% less often than would be expected.
The average opponent winrate against Qiyana is 58.64%.


Zed
the Master of Shadows
Senna wins against Zed 49.27% of the time which is 6.83% lower against Zed than the average opponent.
After normalising both champions win rates Senna wins against Zed 3.55% more often than would be expected.
The average opponent winrate against Zed is 56.10%.


Syndra
the Dark Sovereign
Senna wins against Syndra 50.65% of the time which is 4.32% lower against Syndra than the average opponent.
After normalising both champions win rates Senna wins against Syndra 6.08% more often than would be expected.
The average opponent winrate against Syndra is 54.97%.


Mel
the Soul's Reflection
Senna wins against Mel 50.82% of the time which is 3.90% lower against Mel than the average opponent.
After normalising both champions win rates Senna wins against Mel 6.50% more often than would be expected.
The average opponent winrate against Mel is 54.72%.


Azir
the Emperor of the Sands
Senna wins against Azir 52.16% of the time which is 4.71% lower against Azir than the average opponent.
After normalising both champions win rates Senna wins against Azir 5.66% more often than would be expected.
The average opponent winrate against Azir is 56.87%.


Kassadin
the Void Walker
Senna wins against Kassadin 53.33% of the time which is 1.65% lower against Kassadin than the average opponent.
After normalising both champions win rates Senna wins against Kassadin 8.75% more often than would be expected.
The average opponent winrate against Kassadin is 54.98%.