

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: 15,815,053
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.


Σίβιρ Counters
Σίβιρ bottom vs middle Counters
Σίβιρ bottom on Patch 14 is the strongest counter to middle champions of Κάι'Σα, Λούσιαν & Τριστάνα. While Σίβιρ bottom is countered most by middle champions of Γκάνγκπλανκ, Κέιλ & Κουίν. Below is a detailed breakdown of Σίβιρ bottom counters against middle champions with a minimum of 100 games.


Γκάνγκπλανκ
η Μάστιγα των Θαλασσών
Σίβιρ wins against Γκάνγκπλανκ 44.83% of the time which is 4.76% lower against Γκάνγκπλανκ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Γκάνγκπλανκ 8.21% less often than would be expected.
The average opponent winrate against Γκάνγκπλανκ is 49.59%.


Κέιλ
η Ενάρετη
Σίβιρ wins against Κέιλ 45.21% of the time which is 0.97% lower against Κέιλ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κέιλ 4.41% less often than would be expected.
The average opponent winrate against Κέιλ is 46.18%.


Κουίν
τα Φτερά της Ντεμάσια
Σίβιρ wins against Κουίν 46.00% of the time which is 0.04% lower against Κουίν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κουίν 3.48% less often than would be expected.
The average opponent winrate against Κουίν is 46.04%.


Κένεν
το Μάτι του Κυκλώνα
Σίβιρ wins against Κένεν 46.20% of the time which is 0.23% higher against Κένεν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κένεν 3.21% less often than would be expected.
The average opponent winrate against Κένεν is 45.97%.


Βλάντιμιρ
ο Πορφυρός Θεριστής
Σίβιρ wins against Βλάντιμιρ 47.45% of the time which is 0.57% lower against Βλάντιμιρ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Βλάντιμιρ 4.02% less often than would be expected.
The average opponent winrate against Βλάντιμιρ is 48.02%.


Ζακ
το Μυστικό Όπλο
Σίβιρ wins against Ζακ 47.62% of the time which is 1.77% higher against Ζακ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ζακ 1.67% less often than would be expected.
The average opponent winrate against Ζακ is 45.85%.


Νάσους
ο Φύλακας της Άμμου
Σίβιρ wins against Νάσους 48.00% of the time which is 1.33% lower against Νάσους than the average opponent.
After normalising both champions win rates Σίβιρ wins against Νάσους 4.78% less often than would be expected.
The average opponent winrate against Νάσους is 49.33%.


Ραμπλ
ο Μηχανικός Μπελάς
Σίβιρ wins against Ραμπλ 48.08% of the time which is 0.94% lower against Ραμπλ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ραμπλ 4.39% less often than would be expected.
The average opponent winrate against Ραμπλ is 49.02%.


Τζέις
ο Υπερασπιστής του Αύριο
Σίβιρ wins against Τζέις 48.45% of the time which is 0.76% lower against Τζέις than the average opponent.
After normalising both champions win rates Σίβιρ wins against Τζέις 4.21% less often than would be expected.
The average opponent winrate against Τζέις is 49.21%.


Νίκκο
η Περίεργη Χαμαιλέοντας
Σίβιρ wins against Νίκκο 48.62% of the time which is 2.21% higher against Νίκκο than the average opponent.
After normalising both champions win rates Σίβιρ wins against Νίκκο 1.24% less often than would be expected.
The average opponent winrate against Νίκκο is 46.41%.


Σάιον
ο Απέθαντος Κολοσσός
Σίβιρ wins against Σάιον 48.94% of the time which is 0.12% higher against Σάιον than the average opponent.
After normalising both champions win rates Σίβιρ wins against Σάιον 3.33% less often than would be expected.
The average opponent winrate against Σάιον is 48.82%.


Ακσάν
ο Αποστάτης Φρουρός
Σίβιρ wins against Ακσάν 49.44% of the time which is 1.08% higher against Ακσάν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ακσάν 2.37% less often than would be expected.
The average opponent winrate against Ακσάν is 48.36%.


Μοργκάνα
η Έκπτωτη
Σίβιρ wins against Μοργκάνα 49.61% of the time which is 3.01% higher against Μοργκάνα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Μοργκάνα 0.44% less often than would be expected.
The average opponent winrate against Μοργκάνα is 46.60%.


Έκκο
το Αγόρι που Θρυμμάτισε τον Χρόνο
Σίβιρ wins against Έκκο 49.81% of the time which is 1.64% higher against Έκκο than the average opponent.
After normalising both champions win rates Σίβιρ wins against Έκκο 1.81% less often than would be expected.
The average opponent winrate against Έκκο is 48.17%.


Ακάλι
η Αποστάτρια Δολοφόνος
Σίβιρ wins against Ακάλι 49.83% of the time which is 1.22% higher against Ακάλι than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ακάλι 2.23% less often than would be expected.
The average opponent winrate against Ακάλι is 48.61%.


Τρίνταμερ
ο Βασιλιάς των Βαρβάρων
Σίβιρ wins against Τρίνταμερ 50.00% of the time which is 2.59% higher against Τρίνταμερ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Τρίνταμερ 0.86% less often than would be expected.
The average opponent winrate against Τρίνταμερ is 47.41%.


Κιάνα
Η Αυτοκράτειρα των Στοιχείων
Σίβιρ wins against Κιάνα 50.29% of the time which is 1.32% higher against Κιάνα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κιάνα 2.13% less often than would be expected.
The average opponent winrate against Κιάνα is 48.97%.


Κάσαντιν
ο Ταξιδευτής στο Κενό
Σίβιρ wins against Κάσαντιν 50.36% of the time which is 1.71% higher against Κάσαντιν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κάσαντιν 1.74% less often than would be expected.
The average opponent winrate against Κάσαντιν is 48.65%.


Αμπέσα
Μητριάρχισσα του Πολέμου
Σίβιρ wins against Αμπέσα 50.38% of the time which is 0.62% higher against Αμπέσα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Αμπέσα 2.83% less often than would be expected.
The average opponent winrate against Αμπέσα is 49.76%.


Ζόη
η Όψη του Λυκόφωτος
Σίβιρ wins against Ζόη 50.50% of the time which is 2.83% higher against Ζόη than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ζόη 0.62% less often than would be expected.
The average opponent winrate against Ζόη is 47.67%.


Τάλια
το Σπουργίτι της Σουρίμα
Σίβιρ wins against Τάλια 50.76% of the time which is 2.31% higher against Τάλια than the average opponent.
After normalising both champions win rates Σίβιρ wins against Τάλια 1.14% less often than would be expected.
The average opponent winrate against Τάλια is 48.45%.


Μπραντ
η Φλεγόμενη Εκδίκηση
Σίβιρ wins against Μπραντ 50.86% of the time which is 0.88% higher against Μπραντ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Μπραντ 2.57% less often than would be expected.
The average opponent winrate against Μπραντ is 49.98%.


Βεξ
το Θλιμμένο Γιορντλ
Σίβιρ wins against Βεξ 50.96% of the time which is 4.54% higher against Βεξ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Βεξ 1.09% more often than would be expected.
The average opponent winrate against Βεξ is 46.42%.


Ωρέλιον Σολ
ο Σφυρηλάτης των Άστρων
Σίβιρ wins against Ωρέλιον Σολ 51.10% of the time which is 2.63% higher against Ωρέλιον Σολ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ωρέλιον Σολ 0.82% less often than would be expected.
The average opponent winrate against Ωρέλιον Σολ is 48.47%.


Λουξ
η Κόρη του Φωτός
Σίβιρ wins against Λουξ 51.13% of the time which is 2.83% higher against Λουξ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Λουξ 0.62% less often than would be expected.
The average opponent winrate against Λουξ is 48.30%.


Χάιμερντιγκερ
ο Αναγνωρισμένος Εφευρέτης
Σίβιρ wins against Χάιμερντιγκερ 51.26% of the time which is 6.07% higher against Χάιμερντιγκερ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Χάιμερντιγκερ 2.63% more often than would be expected.
The average opponent winrate against Χάιμερντιγκερ is 45.19%.


Φιζ
ο Σκανδαλιάρης της Παλίρροιας
Σίβιρ wins against Φιζ 51.26% of the time which is 3.16% higher against Φιζ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Φιζ 0.29% less often than would be expected.
The average opponent winrate against Φιζ is 48.10%.


Ωρόρα
η Μάγισσα ανάμεσα στους Κόσμους
Σίβιρ wins against Ωρόρα 51.31% of the time which is 1.59% higher against Ωρόρα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ωρόρα 1.86% less often than would be expected.
The average opponent winrate against Ωρόρα is 49.72%.


Ανίβια
ο Κρυοφοίνικας
Σίβιρ wins against Ανίβια 51.41% of the time which is 4.01% higher against Ανίβια than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ανίβια 0.56% more often than would be expected.
The average opponent winrate against Ανίβια is 47.40%.


Χουέι
ο Οραματιστής
Σίβιρ wins against Χουέι 51.54% of the time which is 2.64% higher against Χουέι than the average opponent.
After normalising both champions win rates Σίβιρ wins against Χουέι 0.81% less often than would be expected.
The average opponent winrate against Χουέι is 48.90%.


Λισάντρα
η Μάγισσα των Πάγων
Σίβιρ wins against Λισάντρα 51.59% of the time which is 3.18% higher against Λισάντρα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Λισάντρα 0.27% less often than would be expected.
The average opponent winrate against Λισάντρα is 48.41%.


Καταρίνα
η Ύπουλη Λεπίδα
Σίβιρ wins against Καταρίνα 51.60% of the time which is 3.61% higher against Καταρίνα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Καταρίνα 0.16% more often than would be expected.
The average opponent winrate against Καταρίνα is 47.99%.


Ιρέλια
η Χορεύτρια των Λεπίδων
Σίβιρ wins against Ιρέλια 51.62% of the time which is 2.02% higher against Ιρέλια than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ιρέλια 1.43% less often than would be expected.
The average opponent winrate against Ιρέλια is 49.60%.


Υασούο
ο Ασυγχώρητος
Σίβιρ wins against Υασούο 51.63% of the time which is 2.81% higher against Υασούο than the average opponent.
After normalising both champions win rates Σίβιρ wins against Υασούο 0.64% less often than would be expected.
The average opponent winrate against Υασούο is 48.82%.


Νααφίρι
ο Σκύλος των Εκατό Δαγκωμάτων
Σίβιρ wins against Νααφίρι 51.64% of the time which is 5.16% higher against Νααφίρι than the average opponent.
After normalising both champions win rates Σίβιρ wins against Νααφίρι 1.71% more often than would be expected.
The average opponent winrate against Νααφίρι is 46.48%.


Τάλον
η Σκιά της Λεπίδας
Σίβιρ wins against Τάλον 51.66% of the time which is 2.97% higher against Τάλον than the average opponent.
After normalising both champions win rates Σίβιρ wins against Τάλον 0.48% less often than would be expected.
The average opponent winrate against Τάλον is 48.69%.


Άνι
το Τέκνο του Σκότους
Σίβιρ wins against Άνι 51.89% of the time which is 4.69% higher against Άνι than the average opponent.
After normalising both champions win rates Σίβιρ wins against Άνι 1.24% more often than would be expected.
The average opponent winrate against Άνι is 47.20%.


Αζίρ
ο Αυτοκράτορας της Άμμου
Σίβιρ wins against Αζίρ 51.93% of the time which is 0.07% higher against Αζίρ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Αζίρ 3.37% less often than would be expected.
The average opponent winrate against Αζίρ is 51.86%.


Ντιάνα
η Καταφρόνια της Σελήνης
Σίβιρ wins against Ντιάνα 52.19% of the time which is 5.42% higher against Ντιάνα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ντιάνα 1.97% more often than would be expected.
The average opponent winrate against Ντιάνα is 46.77%.


Πάνθεον
το Άθραυστο Δόρυ
Σίβιρ wins against Πάνθεον 52.34% of the time which is 6.20% higher against Πάνθεον than the average opponent.
After normalising both champions win rates Σίβιρ wins against Πάνθεον 2.76% more often than would be expected.
The average opponent winrate against Πάνθεον is 46.14%.


Γκράγκας
ο Καβγατζής
Σίβιρ wins against Γκράγκας 52.41% of the time which is 5.60% higher against Γκράγκας than the average opponent.
After normalising both champions win rates Σίβιρ wins against Γκράγκας 2.15% more often than would be expected.
The average opponent winrate against Γκράγκας is 46.81%.


Ζιγκζ
ο Μαγοτεχνικός Μπουρλοτιέρης
Σίβιρ wins against Ζιγκζ 52.43% of the time which is 2.00% higher against Ζιγκζ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ζιγκζ 1.45% less often than would be expected.
The average opponent winrate against Ζιγκζ is 50.43%.


Σάιλας
ο Ελευθερωμένος
Σίβιρ wins against Σάιλας 52.44% of the time which is 3.23% higher against Σάιλας than the average opponent.
After normalising both champions win rates Σίβιρ wins against Σάιλας 0.22% less often than would be expected.
The average opponent winrate against Σάιλας is 49.21%.


Ζίλεαν
ο Φύλακας του Χρόνου
Σίβιρ wins against Ζίλεαν 52.48% of the time which is 7.83% higher against Ζίλεαν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ζίλεαν 4.40% more often than would be expected.
The average opponent winrate against Ζίλεαν is 44.65%.


Ράιζ
ο Μάγος των Ρούνων
Σίβιρ wins against Ράιζ 52.72% of the time which is 2.04% higher against Ράιζ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ράιζ 1.41% less often than would be expected.
The average opponent winrate against Ράιζ is 50.68%.


Άρι
η Αλεπού με τις Εννιά Ουρές
Σίβιρ wins against Άρι 52.84% of the time which is 4.23% higher against Άρι than the average opponent.
After normalising both champions win rates Σίβιρ wins against Άρι 0.78% more often than would be expected.
The average opponent winrate against Άρι is 48.61%.


ΛεΜπλάν
η Πλανεύτρα
Σίβιρ wins against ΛεΜπλάν 52.89% of the time which is 3.95% higher against ΛεΜπλάν than the average opponent.
After normalising both champions win rates Σίβιρ wins against ΛεΜπλάν 0.50% more often than would be expected.
The average opponent winrate against ΛεΜπλάν is 48.94%.


Μάλφαϊτ
το Θραύσμα του Μονόλιθου
Σίβιρ wins against Μάλφαϊτ 53.29% of the time which is 6.00% higher against Μάλφαϊτ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Μάλφαϊτ 2.55% more often than would be expected.
The average opponent winrate against Μάλφαϊτ is 47.29%.


Ζέραθ
ο Εξυψωμένος Μάγος
Σίβιρ wins against Ζέραθ 53.52% of the time which is 5.76% higher against Ζέραθ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ζέραθ 2.31% more often than would be expected.
The average opponent winrate against Ζέραθ is 47.76%.


Μάλζαχαρ
ο Προφήτης του Κενού
Σίβιρ wins against Μάλζαχαρ 53.53% of the time which is 5.49% higher against Μάλζαχαρ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Μάλζαχαρ 2.04% more often than would be expected.
The average opponent winrate against Μάλζαχαρ is 48.04%.


Βίκτορ
ο Κήρυκας του Arcane
Σίβιρ wins against Βίκτορ 53.54% of the time which is 3.83% higher against Βίκτορ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Βίκτορ 0.38% more often than would be expected.
The average opponent winrate against Βίκτορ is 49.71%.


Ζεντ
ο Άρχοντας των Σκιών
Σίβιρ wins against Ζεντ 53.87% of the time which is 4.37% higher against Ζεντ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ζεντ 0.92% more often than would be expected.
The average opponent winrate against Ζεντ is 49.50%.


Οριάνα
η Αφέντρα του Ρολογιού
Σίβιρ wins against Οριάνα 54.00% of the time which is 4.53% higher against Οριάνα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Οριάνα 1.08% more often than would be expected.
The average opponent winrate against Οριάνα is 49.47%.


Τουίστεντ Φέιτ
ο Μέγας Χαρτοπαίκτης
Σίβιρ wins against Τουίστεντ Φέιτ 54.08% of the time which is 5.18% higher against Τουίστεντ Φέιτ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Τουίστεντ Φέιτ 1.73% more often than would be expected.
The average opponent winrate against Τουίστεντ Φέιτ is 48.90%.


Μελ
η Αντανάκλαση της Ψυχής
Σίβιρ wins against Μελ 54.13% of the time which is 2.78% higher against Μελ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Μελ 0.67% less often than would be expected.
The average opponent winrate against Μελ is 51.35%.


Γκάλιο
ο Κολοσσός
Σίβιρ wins against Γκάλιο 54.36% of the time which is 6.29% higher against Γκάλιο than the average opponent.
After normalising both champions win rates Σίβιρ wins against Γκάλιο 2.84% more often than would be expected.
The average opponent winrate against Γκάλιο is 48.07%.


Σίντρα
η Σκοτεινή Βασίλισσα
Σίβιρ wins against Σίντρα 54.41% of the time which is 5.67% higher against Σίντρα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Σίντρα 2.22% more often than would be expected.
The average opponent winrate against Σίντρα is 48.74%.


Κόρκι
ο Τολμηρός Βομβιστής
Σίβιρ wins against Κόρκι 54.66% of the time which is 2.19% higher against Κόρκι than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κόρκι 1.25% less often than would be expected.
The average opponent winrate against Κόρκι is 52.47%.


Βέιγκαρ
ο Μικροσκοπικός Άρχοντας του Κακού
Σίβιρ wins against Βέιγκαρ 54.67% of the time which is 6.26% higher against Βέιγκαρ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Βέιγκαρ 2.81% more often than would be expected.
The average opponent winrate against Βέιγκαρ is 48.41%.


Τσο'Γκαθ
ο Τρόμος του Κενού
Σίβιρ wins against Τσο'Γκαθ 54.81% of the time which is 7.70% higher against Τσο'Γκαθ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Τσο'Γκαθ 4.25% more often than would be expected.
The average opponent winrate against Τσο'Γκαθ is 47.11%.


Ρένεκτον
ο Χασάπης της Ερήμου
Σίβιρ wins against Ρένεκτον 55.15% of the time which is 6.73% higher against Ρένεκτον than the average opponent.
After normalising both champions win rates Σίβιρ wins against Ρένεκτον 3.28% more often than would be expected.
The average opponent winrate against Ρένεκτον is 48.42%.


Βάρους
το Βέλος της Ανταπόδοσης
Σίβιρ wins against Βάρους 55.41% of the time which is 2.20% higher against Βάρους than the average opponent.
After normalising both champions win rates Σίβιρ wins against Βάρους 1.23% less often than would be expected.
The average opponent winrate against Βάρους is 53.21%.


Σουέιν
ο Μέγας Στρατηγός της Νόξους
Σίβιρ wins against Σουέιν 55.47% of the time which is 8.28% higher against Σουέιν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Σουέιν 4.83% more often than would be expected.
The average opponent winrate against Σουέιν is 47.19%.


Κάρμα
η Πεφωτισμένη
Σίβιρ wins against Κάρμα 55.56% of the time which is 6.65% higher against Κάρμα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κάρμα 3.20% more often than would be expected.
The average opponent winrate against Κάρμα is 48.91%.


Κασσιόπη
η Αγκαλιά του Ερπετού
Σίβιρ wins against Κασσιόπη 55.75% of the time which is 6.66% higher against Κασσιόπη than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κασσιόπη 3.21% more often than would be expected.
The average opponent winrate against Κασσιόπη is 49.09%.


Γιόνε
ο Αλησμόνητος
Σίβιρ wins against Γιόνε 55.82% of the time which is 3.81% higher against Γιόνε than the average opponent.
After normalising both champions win rates Σίβιρ wins against Γιόνε 0.37% more often than would be expected.
The average opponent winrate against Γιόνε is 52.01%.


Βελ'Κοζ
το Μάτι του Κενού
Σίβιρ wins against Βελ'Κοζ 55.89% of the time which is 7.82% higher against Βελ'Κοζ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Βελ'Κοζ 4.37% more often than would be expected.
The average opponent winrate against Βελ'Κοζ is 48.07%.


Σμόλντερ
ο Φλογερός Νεοσσός
Σίβιρ wins against Σμόλντερ 57.22% of the time which is 3.82% higher against Σμόλντερ than the average opponent.
After normalising both champions win rates Σίβιρ wins against Σμόλντερ 0.39% more often than would be expected.
The average opponent winrate against Σμόλντερ is 53.40%.


Γκάρεν
η Δύναμη της Ντεμάσια
Σίβιρ wins against Γκάρεν 58.50% of the time which is 9.86% higher against Γκάρεν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Γκάρεν 6.41% more often than would be expected.
The average opponent winrate against Γκάρεν is 48.64%.


Τριστάνα
το Πυροβολικό των Γιόρντλ
Σίβιρ wins against Τριστάνα 60.37% of the time which is 7.24% higher against Τριστάνα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Τριστάνα 3.81% more often than would be expected.
The average opponent winrate against Τριστάνα is 53.13%.


Λούσιαν
ο Μαχητής του Φωτός
Σίβιρ wins against Λούσιαν 60.78% of the time which is 4.73% higher against Λούσιαν than the average opponent.
After normalising both champions win rates Σίβιρ wins against Λούσιαν 1.33% more often than would be expected.
The average opponent winrate against Λούσιαν is 56.05%.


Κάι'Σα
η Κόρη του Κενού
Σίβιρ wins against Κάι'Σα 61.17% of the time which is 6.89% higher against Κάι'Σα than the average opponent.
After normalising both champions win rates Σίβιρ wins against Κάι'Σα 3.47% more often than would be expected.
The average opponent winrate against Κάι'Σα is 54.28%.