Master Yivs Mordekaiser
Master Yi vs Mordekaiser is a decisive matchup in LoL patch 26.19. Mordekaiser wins with a 64.5% win rate (+29.0%) over Master Yi based on 31 games. Mordekaiser holds the advantage in both the early and late game. Below you'll find the best Master Yi build, runes, laning stats, and strategies for the Master Yi vs Mordekaiser matchup.
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 Mordekaiser?
Master Yi wins 25.0% of these games. With this many games the true rate is most likely between 13.8% and 41.1% (95% range).
- Expected
- 47.4% From both champions' overall Jungle win rates
- Matchup effect
- −22.4 pts Observed minus expected
- Sample
- 36 games Lane: Jungle
- vs patch 26.18
- — Not enough games on both patches
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
They also met in another lane (Top): 13 games, Master Yi won 46.2%.
Key takeaways
- Mordekaiser is favored in this matchup: Master Yi wins 25.0% of 36 games, and the whole 95% range (13.8–41.1%) is on the same side of 50%.
- That is 22.4 points worse for Master Yi than both champions' overall Jungle win rates predict (47.4%), so the matchup itself works against this pick.
- Neither side reliably wins the lane: the average gold difference at 15 minutes is 275, within the margin of error (35 games).
- Master Yi players pick Serpent's Fang far more often against Mordekaiser: under 0.5% of their other Jungle games, 5.6% 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 Mordekaiser 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 Mordekaiser Laning Stats
At 15 minutes
Whole-game averages
Master Yi vs Mordekaiser Win Rate by Game Length
Master Yi's win rate against Mordekaiser 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 Mordekaiser in short and long games are within the margin of error of each other.
Master Yi vs Mordekaiser 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)EvenMaster Yi gold at 15: −275
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Master Yi Changes Against Mordekaiser
Choices Master Yi players make noticeably more or less often in this matchup than in their other Jungle games.
Serpent's FangItemUsuallyunder 0.5%vs Mordekaiser5.6%+5.6 pts
ConquerorKeystoneUsually0.6%vs Mordekaiser5.6%+4.9 pts
Gustwalker Hatchling + Oracle LensStarting itemsUsually1.0%vs Mordekaiser5.6%+4.6 pts- Usually1.4%vs Mordekaiser5.6%+4.2 pts
Best Master Yi Build vs Mordekaiser
Usual Master Yi build (Jungle)
67.2% win rate · 335 games
Against Mordekaiser
Not enough matchup-specific build data: only 3 of 25 Master Yi games against Mordekaiser carried a complete build, which is too few to recommend an item path from. Use Master Yi's standard build instead.
- Mordekaiser usually completes Gustwalker Hatchling first, at 0.2 min (median of 23 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 Mordekaiser
Usual Master Yi runes (Jungle)
Lethal Tempo
82.4% win rate · 17 games
Against Mordekaiser
Too few games for a matchup-specific rune page yet — use the usual page.
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 26.19. 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 Mordekaiser FAQ - Patch 26.19
Who wins Master Yi vs Mordekaiser?
Mordekaiser is favored in this matchup: Master Yi wins 25.0% of 36 games, and the whole 95% range (13.8–41.1%) is on the same side of 50%.
What is Master Yi's win rate against Mordekaiser?
Master Yi wins 25.0% of 36 Jungle games against Mordekaiser on patch 26.19 (95% range 13.8–41.1%). Based on both champions' overall Jungle win rates, 47.4% would be expected.
Does Master Yi counter Mordekaiser?
No — it is the other way around: Master Yi wins only 25.0% of 36 games against Mordekaiser, and the whole 95% range is below 50%.
Who wins lane, Master Yi or Mordekaiser?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 275, within the margin of error (35 games).
Does Master Yi outscale Mordekaiser?
There are too few games of each length to tell yet.
When is Mordekaiser strongest against Master Yi?
On current data there is no stage of the game where Mordekaiser is ahead of Master Yi beyond the margin of error.
What should Master Yi build against Mordekaiser?
There are not enough games for a matchup-specific core, so use Master Yi's usual Jungle core: The Collector, Immortal Shieldbow, Kraken Slayer. The biggest change against Mordekaiser: Serpent's Fang (under 0.5% usually, 5.6% here).
What runes should Master Yi use against Mordekaiser?
Use Master Yi's usual Lethal Tempo page (Precision + Domination); there are too few games for a matchup-specific page. The biggest change against Mordekaiser: Conqueror (0.6% usually, 5.6% here).