Kaynvs Amumu
Kayn vs Amumu is a moderate matchup in LoL patch 26.19. Kayn wins with a 52.4% win rate (+4.8%) over Amumu based on 126 games. Kayn holds the advantage in both the early and late game. Below you'll find the best Kayn build, runes, laning stats, and strategies for the Kayn vs Amumu matchup.
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 Amumu?
Kayn wins 48.4% of these games. With this many games the true rate is most likely between 42.6% and 54.2% (95% range).
- Expected
- 48.0% From both champions' overall Jungle win rates
- Matchup effect
- +0.4 pts Observed minus expected
- Sample
- 281 games Lane: Jungle
- vs patch 26.18
- −6.8 pts Within normal patch-to-patch noise
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Current data slightly favors Amumu, but the sample is too limited for a strong conclusion: Kayn wins 48.4% of 281 games (95% range 42.6–54.2%).
- Both champions' overall Jungle win rates predict 48.0% 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: 212 gold ahead of Amumu at 15 minutes on average (278 games with a 15-minute snapshot).
- Kayn players pick Mercury's Treads far more often against Amumu: 19.1% of their other Jungle games, 31.7% 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 Kayn and Amumu 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 Amumu Laning Stats
At 15 minutes
Whole-game averages
Kayn vs Amumu Win Rate by Game Length
Kayn's win rate against Amumu 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 Amumu in short and long games are within the margin of error of each other.
Kayn vs Amumu 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: +212
- First itemEvenKayn: 0.2 min · Amumu: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenKayn wins 51.3% of 117 games
- 30+ min gamesEvenKayn wins 46.3% of 147 games
What Kayn Changes Against Amumu
Choices Kayn players make noticeably more or less often in this matchup than in their other Jungle games.
Mercury's TreadsBootsUsually19.1%vs Amumu31.7%+12.6 pts43.8% WR here
Plated SteelcapsBootsUsually30.3%vs Amumu18.5%−11.8 pts40.4% WR here
Dark HarvestKeystoneUsually43.5%vs Amumu33.1%−10.4 pts47.3% WR here
Grisly MementosRuneUsually40.1%vs Amumu30.2%−9.8 pts43.5% WR here
Black CleaverItemUsually32.3%vs Amumu41.6%+9.3 pts47.0% WR here
ConquerorKeystoneUsually44.8%vs Amumu54.1%+9.3 pts49.3% WR here
Last StandRuneUsually45.2%vs Amumu53.0%+7.8 pts49.0% WR here
TriumphRuneUsually52.3%vs Amumu59.8%+7.5 pts48.8% WR here
Best Kayn Build vs Amumu
Usual Kayn build (Jungle)
67.7% win rate · 127 games
Limited sample: 23 of 198 games finished this exact core, so treat it as an observation rather than a recommendation.
- Kayn usually completes Scorchclaw Pup first, at 0.2 min (median of 138 games).
- Amumu usually completes Mosstomper Seedling first, at 0.2 min (median of 196 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 Amumu
Usual Kayn runes (Jungle)
Fleet Footwork
81.3% win rate · 16 games
Against Amumu
Conqueror
65.7% win rate · 35 games
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 26.19. 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 Amumu FAQ - Patch 26.19
Who wins Kayn vs Amumu?
Current data slightly favors Amumu, but the sample is too limited for a strong conclusion: Kayn wins 48.4% of 281 games (95% range 42.6–54.2%).
What is Kayn's win rate against Amumu?
Kayn wins 48.4% of 281 Jungle games against Amumu on patch 26.19 (95% range 42.6–54.2%). Based on both champions' overall Jungle win rates, 48.0% would be expected.
Does Kayn counter Amumu?
Not clearly. Kayn wins 48.4% of 281 games against Amumu, and the 95% range (42.6–54.2%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kayn or Amumu?
Kayn usually wins the lane: 212 gold ahead of Amumu at 15 minutes on average (278 games with a 15-minute snapshot).
Does Kayn outscale Amumu?
Not measurably: Kayn's win rate against Amumu in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Amumu strongest against Kayn?
On current data there is no stage of the game where Amumu is ahead of Kayn beyond the margin of error.
What should Kayn build against Amumu?
The most successful Kayn core against Amumu is Voltaic Cyclosword, Hubris, Axiom Arc (56.5% over 23 games). The biggest change against Amumu: Mercury's Treads (19.1% usually, 31.7% here).
What runes should Kayn use against Amumu?
Conqueror with Precision and Inspiration — 65.7% over 35 games against Amumu. The biggest change against Amumu: Dark Harvest (43.5% usually, 33.1% here).