- Win Rate
- 50.7%
- Pick Rate
- 2.3%
- Ban Rate
- 13.5%
Illaoi vs Mordekaiser
- Patch
- 26.20
- Games
- 3,011
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 13, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Illaoi vs Mordekaiser is a decisive matchup in LoL patch 26.20. Mordekaiser wins with a 53.1% win rate (+6.2%) over Illaoi based on 145 games. Mordekaiser holds the advantage in both the early and late game. Below you'll find the best Illaoi build, runes, laning stats, and strategies for the Illaoi vs Mordekaiser matchup.
Illaoi Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Illaoi 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 Illaoi vs Mordekaiser?
Illaoi wins 46.0% of these games. With this many games the true rate is most likely between 37.9% and 54.3% (95% range).
- Expected
- 49.6% From both champions' overall Top win rates
- Matchup effect
- −3.6 pts Observed minus expected
- Sample
- 137 games Lane: Top
- vs patch 26.19
- +5.3 pts Within normal patch-to-patch noise
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 9 – Oct 11
Key takeaways
- Current data slightly favors Mordekaiser, but the sample is too limited for a strong conclusion: Illaoi wins 46.0% of 137 games (95% range 37.9–54.3%).
- Both champions' overall Top win rates predict 49.6% for Illaoi; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Mordekaiser usually wins the lane: 378 gold ahead of Illaoi at 15 minutes on average (134 games with a 15-minute snapshot).
- Illaoi players pick Mercury's Treads far more often against Mordekaiser: 30.3% of their other Top games, 67.9% 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 Illaoi 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 Illaoi'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.
Illaoi vs Mordekaiser Laning Stats
At 15 minutes
Whole-game averages
Illaoi vs Mordekaiser Win Rate by Game Length
Illaoi'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: Illaoi's results against Mordekaiser in short and long games are within the margin of error of each other.
Illaoi 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)MordekaiserIllaoi gold at 15: −378
- First itemMordekaiserIllaoi: 12.5 min · Mordekaiser: 11.4 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenIllaoi wins 38.5% of 52 games
- 30+ min gamesEvenIllaoi wins 50.0% of 74 games
What Illaoi Changes Against Mordekaiser
Choices Illaoi players make noticeably more or less often in this matchup than in their other Top games.
Mercury's TreadsBootsUsually30.3%vs Mordekaiser67.9%+37.5 pts48.4% WR here
Plated SteelcapsBootsUsually57.7%vs Mordekaiser21.9%−35.8 pts40.0% WR here
Death's DanceItemUsually19.8%vs Mordekaiser5.1%−14.7 pts
Iceborn GauntletItemUsually60.5%vs Mordekaiser46.0%−14.6 pts44.4% WR here
Spirit VisageItemUsually33.9%vs Mordekaiser46.0%+12.0 pts65.1% WR here
Flash + IgniteSummoner spellsUsually20.6%vs Mordekaiser29.2%+8.6 pts37.5% WR here
Best Illaoi Build vs Mordekaiser
Usual Illaoi build (Top)
79.6% win rate · 49 games
Against Mordekaiser
70.0% win rate · 20 games
Limited sample: 20 of 68 games finished this exact core, so treat it as an observation rather than a recommendation.
- Illaoi usually completes Black Cleaver first, at 12.5 min (median of 98 games).
- Mordekaiser usually completes Rylai's Crystal Scepter first, at 11.4 min (median of 97 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 Illaoi Runes vs Mordekaiser
Usual Illaoi runes (Top)
Grasp of the Undying
55.0% win rate · 327 games
Against Mordekaiser
Grasp of the Undying60.0% win rate · 50 games
Plan your Illaoi 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
Illaoi matchup data for League of Legends patch 26.20. The table below shows Illaoi'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 Illaoi build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Illaoi Matchups
Hardest for Illaoi
Easiest for Illaoi
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.
Illaoi vs Mordekaiser FAQ - Patch 26.20
Who wins Illaoi vs Mordekaiser?
Current data slightly favors Mordekaiser, but the sample is too limited for a strong conclusion: Illaoi wins 46.0% of 137 games (95% range 37.9–54.3%).
What is Illaoi's win rate against Mordekaiser?
Illaoi wins 46.0% of 137 Top games against Mordekaiser on patch 26.20 (95% range 37.9–54.3%). Based on both champions' overall Top win rates, 49.6% would be expected.
Does Illaoi counter Mordekaiser?
Not clearly. Illaoi wins 46.0% of 137 games against Mordekaiser, and the 95% range (37.9–54.3%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Illaoi or Mordekaiser?
Mordekaiser usually wins the lane: 378 gold ahead of Illaoi at 15 minutes on average (134 games with a 15-minute snapshot).
Does Illaoi outscale Mordekaiser?
There are too few games of each length to tell yet.
When is Mordekaiser strongest against Illaoi?
Mordekaiser is measurably ahead in: Lane (15 min), First item.
What should Illaoi build against Mordekaiser?
The most successful Illaoi core against Mordekaiser is Iceborn Gauntlet, Black Cleaver, Spirit Visage (70.0% over 20 games). The biggest change against Mordekaiser: Mercury's Treads (30.3% usually, 67.9% here).
What runes should Illaoi use against Mordekaiser?
Grasp of the Undying with Resolve and Precision — 60.0% over 50 games against Mordekaiser. The biggest change against Mordekaiser: Flash + Ignite (20.6% usually, 29.2% here).