- Win Rate
- 48.8%
- Pick Rate
- 3.4%
- Ban Rate
- 5.5%
Kayn vs Sejuani
- Patch
- 26.22
- Games
- 6,639
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 14, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Kayn vs Sejuani (Jungle): Kayn wins 48.4% of 258 ranked games over the last 2 patches (gold diff at 15: +449). Patch 26.22 build & runes.
Kayn48.4%
Current data slightly favors Sejuani, but the sample is too limited for a strong conclusion: Kayn wins 48.4% of 258 games (95% range 42.4–54.5%).
Kayn Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Kayn performs against them. You'll get head-to-head win rates, laning stats, the best build and runes for the matchup, and early vs late game analysis — all based on real ranked data.
Who wins Kayn vs Sejuani?
Kayn wins 48.4% of these games. With this many games the true rate is most likely between 42.4% and 54.5% (95% range).
- Expected
- 48.5% From both champions' overall Jungle win rates
- Matchup effect
- −0.1 pts Observed minus expected
- Sample
- 258 games Lane: Jungle · Patch 26.21–26.22
- vs patch 26.21
- −5.3 pts Within normal patch-to-patch noise
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.21–26.22 · Oct 27 – Nov 14
The headline win rate covers patches 26.21–26.22 (258 games). The lane, game-length, build and rune sections below use patch 26.22 only (76 games).
Key takeaways
- Current data slightly favors Sejuani, but the sample is too limited for a strong conclusion: Kayn wins 48.4% of 258 games (95% range 42.4–54.5%).
- Both champions' overall Jungle win rates predict 48.5% for Kayn; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Kayn usually wins the lane: 449 gold ahead of Sejuani at 15 minutes on average (74 games with a 15-minute snapshot).
- Kayn players pick Conqueror far more often against Sejuani: 40.4% of their other Jungle games, 55.3% here.
How we calculate this
Games: ranked Solo/Duo and Flex games on the North America server from the patch shown. Remakes (games under 5 minutes) are excluded.
A game only counts when Kayn and Sejuani played the same position on opposite teams, so roaming, lane swaps within a team or a champion merely being in the same game never count as this matchup.
The 95% range is a Wilson score interval. Confidence comes from how wide that range is: within ±3 points is very high, ±5 high, ±8 moderate, anything wider low. Below 20 games a matchup is not classified at all.
Expected win rate combines both champions’ win rates in this lane (same games and filters) with the log5 formula: E = A(1−B) / (A(1−B) + B(1−A)). Matchup effect = observed − expected.
"What changes" compares Kayn's choices in this matchup with the same champion's other games in the same lane, and lists a change only when it is at least 3 points and statistically significant (two-proportion z-test, |z| ≥ 2, 20+ games).
Results are not split by rank: the sample per rank is too small for honest per-rank matchup numbers.
Kayn vs Sejuani Laning Stats
At 15 minutes
Whole-game averages
Kayn vs Sejuani Win Rate by Game Length
Kayn's win rate against Sejuani by game length. The dot is the win rate, the bar its 95% range and the dashed line the champion's usual win rate at that length. Lengths with fewer than 25 games are left blank.
No game length stands out: Kayn's results against Sejuani in short and long games are within the margin of error of each other.
Kayn vs Sejuani Power Spikes
Who is ahead at each stage, measured from these games. A stage reads "Even" when the difference is inside the margin of error, and "Insufficient data" when there are too few games to tell.
- Lane (15 min)KaynKayn gold at 15: +449
- First itemEvenKayn: 0.2 min · Sejuani: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Kayn Changes Against Sejuani
Choices Kayn players make noticeably more or less often in this matchup than in their other Jungle games.
ConquerorKeystoneUsually40.4%vs Sejuani55.3%+14.9 pts40.5% WR here
Last StandRuneUsually38.4%vs Sejuani52.6%+14.2 pts40.0% WR here
Usually73.3%vs Sejuani59.2%−14.1 pts46.7% WR here
Treasure HunterRuneUsually48.3%vs Sejuani34.2%−14.1 pts50.0% WR here
TriumphRuneUsually45.2%vs Sejuani59.2%+14.0 pts40.0% WR here
Endless HungerItemUsually5.8%vs Sejuani15.8%+10.0 pts
Mercury's TreadsBootsUsually19.3%vs Sejuani28.9%+9.7 pts45.5% WR here
EclipseItemUsually18.0%vs Sejuani27.6%+9.6 pts47.6% WR here
Best Kayn Build vs Sejuani
Usual Kayn build (Jungle)
64.7% win rate · 119 games
Against Sejuani
Not enough matchup-specific build data: only 6 of 52 Kayn games against Sejuani carried a complete build, which is too few to recommend an item path from. Use Kayn's standard build instead.
- Kayn usually completes Scorchclaw Pup first, at 0.2 min (median of 36 games).
- Sejuani usually completes Mosstomper Seedling first, at 0.2 min (median of 57 games).
- Skill priority: Q > W > E — the same as usual.
Builds are ranked by the lower edge of their win rate range, not the raw win rate, so a build seen in a handful of wins never outranks a proven one.
Best Kayn Runes vs Sejuani
Usual Kayn runes (Jungle)
Stormraider's Surge
68.2% win rate · 22 games
Against Sejuani
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Kayn draft in Draft Lab
Draft Lab lays out both teams lane by lane with live matchup win rates, damage profiles and game-phase lean, and suggests picks and bans from current meta data.
- Full 5v5 draft board
- Lane matchup win rates
- Pick and ban suggestions
Kayn matchup data for League of Legends patch 26.22. The table below shows Kayn's win rate, gold difference, and performance stats against every champion in the current meta. Click any champion name to see a detailed head-to-head breakdown including the best Kayn build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Kayn Matchups
Hardest for Kayn
Easiest for Kayn
Win rate and games for each matchup. Lists are ranked by the edge of the 95% range so small samples cannot top them; matchups with at least 50 games only.
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Kayn vs Sejuani FAQ - Patch 26.21–26.22
Who wins Kayn vs Sejuani?
Current data slightly favors Sejuani, but the sample is too limited for a strong conclusion: Kayn wins 48.4% of 258 games (95% range 42.4–54.5%).
What is Kayn's win rate against Sejuani?
Kayn wins 48.4% of 258 Jungle games against Sejuani on patch 26.21–26.22 (95% range 42.4–54.5%). Based on both champions' overall Jungle win rates, 48.5% would be expected.
Does Kayn counter Sejuani?
Not clearly. Kayn wins 48.4% of 258 games against Sejuani, and the 95% range (42.4–54.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kayn or Sejuani?
Kayn usually wins the lane: 449 gold ahead of Sejuani at 15 minutes on average (74 games with a 15-minute snapshot).
Does Kayn outscale Sejuani?
There are too few games of each length to tell yet.
When is Sejuani strongest against Kayn?
On current data there is no stage of the game where Sejuani is ahead of Kayn beyond the margin of error.
What should Kayn build against Sejuani?
There are not enough games for a matchup-specific core, so use Kayn's usual Jungle core: Voltaic Cyclosword, Axiom Arc, Edge of Night. The biggest change against Sejuani: Voltaic Cyclosword (73.3% usually, 59.2% here).
What runes should Kayn use against Sejuani?
Use Kayn's usual Stormraider's Surge page (Sorcery + Domination); there are too few games for a matchup-specific page. The biggest change against Sejuani: Conqueror (40.4% usually, 55.3% here).