- Win Rate
- 50.8%
- Pick Rate
- 3.5%
- Ban Rate
- 18.5%
Master Yi vs Amumu
- Patch
- 26.22
- Games
- 6,830
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 14, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Master Yi vs Amumu (Jungle): Master Yi wins 45.2% of 279 ranked games over the last 2 patches (gold diff at 15: +480). Patch 26.22 build & runes.
Master Yi45.2%
Current data slightly favors Amumu, but the sample is too limited for a strong conclusion: Master Yi wins 45.2% of 279 games (95% range 39.4–51.0%).
Master Yi Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Master Yi 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 Master Yi vs Amumu?
Master Yi wins 45.2% of these games. With this many games the true rate is most likely between 39.4% and 51.0% (95% range).
- Expected
- 47.4% From both champions' overall Jungle win rates
- Matchup effect
- −2.2 pts Observed minus expected
- Sample
- 279 games Lane: Jungle · Patch 26.21–26.22
- vs patch 26.21
- −2.7 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 (279 games). The lane, game-length, build and rune sections below use patch 26.22 only (99 games).
Key takeaways
- Current data slightly favors Amumu, but the sample is too limited for a strong conclusion: Master Yi wins 45.2% of 279 games (95% range 39.4–51.0%).
- Both champions' overall Jungle win rates predict 47.4% for Master Yi; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Master Yi usually wins the lane: 480 gold ahead of Amumu at 15 minutes on average (96 games with a 15-minute snapshot).
- Master Yi players pick Blade of The Ruined King far more often against Amumu: 32.4% of their other Jungle games, 43.4% 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 Master Yi 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 Master Yi'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.
Master Yi vs Amumu Laning Stats
At 15 minutes
Whole-game averages
Master Yi vs Amumu Win Rate by Game Length
Master Yi'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: Master Yi's results against Amumu in short and long games are within the margin of error of each other.
Master Yi 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)Master YiMaster Yi gold at 15: +480
- First itemEvenMaster Yi: 0.2 min · Amumu: 0.1 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenMaster Yi wins 45.5% of 44 games
- 30+ min gamesEvenMaster Yi wins 46.7% of 45 games
What Master Yi Changes Against Amumu
Choices Master Yi players make noticeably more or less often in this matchup than in their other Jungle games.
Usually32.4%vs Amumu43.4%+11.0 pts34.9% WR here
Mercury's TreadsBootsUsually11.4%vs Amumu20.2%+8.8 pts45.0% WR here
Wit's EndItemUsually10.8%vs Amumu19.2%+8.4 pts
Best Master Yi Build vs Amumu
Usual Master Yi build (Jungle)
78.6% win rate · 42 games
Against Amumu
Not enough matchup-specific build data: only 12 of 57 Master Yi games against Amumu carried a complete build, which is too few to recommend an item path from. Use Master Yi's standard build instead.
- Master Yi usually completes Gustwalker Hatchling first, at 0.2 min (median of 51 games).
- Amumu usually completes Mosstomper Seedling first, at 0.1 min (median of 75 games).
- Skill priority: Q > E > 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 Master Yi Runes vs Amumu
Usual Master Yi runes (Jungle)
Hail of Blades
60.1% win rate · 143 games
Against Amumu
Hail of Blades
43.8% win rate · 32 games
Plan your Master Yi 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
Master Yi matchup data for League of Legends patch 26.22. The table below shows Master Yi'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 Master Yi build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Master Yi Matchups
Hardest for Master Yi
Easiest for Master Yi
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.
Master Yi vs Amumu FAQ - Patch 26.21–26.22
Who wins Master Yi vs Amumu?
Current data slightly favors Amumu, but the sample is too limited for a strong conclusion: Master Yi wins 45.2% of 279 games (95% range 39.4–51.0%).
What is Master Yi's win rate against Amumu?
Master Yi wins 45.2% of 279 Jungle games against Amumu on patch 26.21–26.22 (95% range 39.4–51.0%). Based on both champions' overall Jungle win rates, 47.4% would be expected.
Does Master Yi counter Amumu?
Not clearly. Master Yi wins 45.2% of 279 games against Amumu, and the 95% range (39.4–51.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Master Yi or Amumu?
Master Yi usually wins the lane: 480 gold ahead of Amumu at 15 minutes on average (96 games with a 15-minute snapshot).
Does Master Yi outscale Amumu?
There are too few games of each length to tell yet.
When is Amumu strongest against Master Yi?
On current data there is no stage of the game where Amumu is ahead of Master Yi beyond the margin of error.
What should Master Yi build against Amumu?
There are not enough games for a matchup-specific core, so use Master Yi's usual Jungle core: Kraken Slayer, Death's Dance, Terminus. The biggest change against Amumu: Blade of The Ruined King (32.4% usually, 43.4% here).
What runes should Master Yi use against Amumu?
Hail of Blades with Domination and Precision — 43.8% over 32 games against Amumu.