- Win Rate
- 52.5%
- Pick Rate
- 2.2%
- Ban Rate
- 2.1%
Amumu vs Kayn
- Patch
- 26.22
- Games
- 4,264
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 14, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Amumu vs Kayn (Jungle): Amumu wins 48.7% of 417 ranked games over the last 2 patches (gold diff at 15: -76). Patch 26.22 build & runes.
Amumu48.7%
Amumu vs Kayn is an even matchup: Amumu wins 48.7% of 417 games, and the 95% range (43.9–53.5%) comfortably includes 50%.
Amumu Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Amumu 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 Amumu vs Kayn?
Amumu wins 48.7% of these games. With this many games the true rate is most likely between 43.9% and 53.5% (95% range).
- Expected
- 52.0% From both champions' overall Jungle win rates
- Matchup effect
- −3.3 pts Observed minus expected
- Sample
- 417 games Lane: Jungle · Patch 26.21–26.22
- vs patch 26.21
- +12.5 pts A real change since last patch
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.21–26.22 · Oct 27 – Nov 13
The headline win rate covers patches 26.21–26.22 (417 games). The lane, game-length, build and rune sections below use patch 26.22 only (150 games).
Key takeaways
- Amumu vs Kayn is an even matchup: Amumu wins 48.7% of 417 games, and the 95% range (43.9–53.5%) comfortably includes 50%.
- Both champions' overall Jungle win rates predict 52.0% for Amumu; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Neither side reliably wins the lane: the average gold difference at 15 minutes is 76, within the margin of error (150 games).
- Amumu players pick Thornmail far more often against Kayn: 36.1% of their other Jungle games, 46.7% 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 Amumu and Kayn 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 Amumu'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.
Amumu vs Kayn Laning Stats
At 15 minutes
Whole-game averages
Amumu vs Kayn Win Rate by Game Length
Amumu's win rate against Kayn 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: Amumu's results against Kayn in short and long games are within the margin of error of each other.
Amumu vs Kayn 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)EvenAmumu gold at 15: −76
- First itemEvenAmumu: 0.2 min · Kayn: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenAmumu wins 56.1% of 57 games
- 30+ min gamesEvenAmumu wins 56.0% of 84 games
What Amumu Changes Against Kayn
Choices Amumu players make noticeably more or less often in this matchup than in their other Jungle games.
ThornmailItemUsually36.1%vs Kayn46.7%+10.5 pts60.0% WR here
Plated SteelcapsBootsUsually53.2%vs Kayn62.7%+9.5 pts59.6% WR here
Gustwalker Hatchling + Health Potion + Stealth WardStarting itemsUsually5.1%vs Kayn9.3%+4.2 pts- Q > E > Wthe Q > E > W skill orderSkill priorityUsuallyunder 0.5%vs Kayn4.0%+4.0 pts
Usually2.0%vs Kayn5.3%+3.3 pts
Best Amumu Build vs Kayn
Usual Amumu build (Jungle)
92.3% win rate · 13 games
Against Kayn
Not enough matchup-specific build data: only 15 of 103 Amumu games against Kayn carried a complete build, which is too few to recommend an item path from. Use Amumu's standard build instead.
- Amumu usually completes Mosstomper Seedling first, at 0.2 min (median of 101 games).
- Kayn usually completes Scorchclaw Pup first, at 0.2 min (median of 74 games).
- Skill priority: E > Q > W — 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 Amumu Runes vs Kayn
Usual Amumu runes (Jungle)
Conqueror
62.3% win rate · 114 games
Against Kayn
Aftershock
67.6% win rate · 34 games
Plan your Amumu 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
Amumu matchup data for League of Legends patch 26.22. The table below shows Amumu'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 Amumu build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Amumu Matchups
Hardest for Amumu
Easiest for Amumu
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.
Amumu vs Kayn FAQ - Patch 26.21–26.22
Who wins Amumu vs Kayn?
Amumu vs Kayn is an even matchup: Amumu wins 48.7% of 417 games, and the 95% range (43.9–53.5%) comfortably includes 50%.
What is Amumu's win rate against Kayn?
Amumu wins 48.7% of 417 Jungle games against Kayn on patch 26.21–26.22 (95% range 43.9–53.5%). Based on both champions' overall Jungle win rates, 52.0% would be expected.
Does Amumu counter Kayn?
Not clearly. Amumu wins 48.7% of 417 games against Kayn, and the 95% range (43.9–53.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Amumu or Kayn?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 76, within the margin of error (150 games).
Does Amumu outscale Kayn?
There are too few games of each length to tell yet.
When is Kayn strongest against Amumu?
On current data there is no stage of the game where Kayn is ahead of Amumu beyond the margin of error.
What should Amumu build against Kayn?
There are not enough games for a matchup-specific core, so use Amumu's usual Jungle core: Abyssal Mask, Jak'Sho, The Protean, Hollow Radiance. The biggest change against Kayn: Thornmail (36.1% usually, 46.7% here).
What runes should Amumu use against Kayn?
Aftershock with Resolve and Domination — 67.6% over 34 games against Kayn.