Kaynvs Mordekaiser
Kayn vs Mordekaiser is a decisive matchup in LoL patch 26.19. Kayn wins with a 66.7% win rate (+33.3%) over Mordekaiser based on 33 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 Mordekaiser 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 Mordekaiser?
Kayn wins 51.4% of these games. With this many games the true rate is most likely between 35.6% and 67.0% (95% range).
- Expected
- 46.1% From both champions' overall Top win rates
- Matchup effect
- +5.3 pts Observed minus expected
- Sample
- 35 games Lane: Top
- vs patch 26.18
- — Not enough games on both patches
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
They also met in another lane (Jungle): 34 games, Kayn won 55.9%.
Key takeaways
- Kayn vs Mordekaiser is an even matchup: Kayn wins 51.4% of 35 games, and the 95% range (35.6–67.0%) comfortably includes 50%.
- Both champions' overall Top win rates predict 46.1% for Kayn; 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: 983 gold ahead of Kayn at 15 minutes on average (35 games with a 15-minute snapshot).
- Kayn players pick Plated Steelcaps much less often against Mordekaiser: 49.9% of their other Top games, 17.1% 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 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 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 Mordekaiser Laning Stats
At 15 minutes
Whole-game averages
Kayn vs Mordekaiser Win Rate by Game Length
Kayn'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: Kayn's results against Mordekaiser in short and long games are within the margin of error of each other.
Kayn 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)MordekaiserKayn gold at 15: −983
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Kayn Changes Against Mordekaiser
Choices Kayn players make noticeably more or less often in this matchup than in their other Top games.
Plated SteelcapsBootsUsually49.9%vs Mordekaiser17.1%−32.7 pts
Cosmic InsightRuneUsually18.0%vs Mordekaiser37.1%+19.1 pts
Mercury's TreadsBootsUsually18.2%vs Mordekaiser37.1%+19.0 pts
InspirationSecondary treeUsually20.6%vs Mordekaiser37.1%+16.5 pts
Magical FootwearRuneUsually16.1%vs Mordekaiser31.4%+15.3 pts
Serpent's FangItemUsually2.6%vs Mordekaiser11.4%+8.8 pts
Deep WardRuneUsually0.7%vs Mordekaiser5.7%+5.0 pts
Best Kayn Build vs Mordekaiser
Against Mordekaiser
Not enough matchup-specific build data: only 3 of 21 Kayn games against Mordekaiser carried a complete build, which is too few to recommend an item path from. Use Kayn's standard build instead.
- Mordekaiser usually completes Rylai's Crystal Scepter first, at 10.9 min (median of 20 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 Mordekaiser
Usual Kayn runes (Top)
Conqueror
46.8% win rate · 346 games
Against Mordekaiser
Too few games for a matchup-specific rune page yet — use the usual page.
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 Mordekaiser FAQ - Patch 26.19
Who wins Kayn vs Mordekaiser?
Kayn vs Mordekaiser is an even matchup: Kayn wins 51.4% of 35 games, and the 95% range (35.6–67.0%) comfortably includes 50%.
What is Kayn's win rate against Mordekaiser?
Kayn wins 51.4% of 35 Top games against Mordekaiser on patch 26.19 (95% range 35.6–67.0%). Based on both champions' overall Top win rates, 46.1% would be expected.
Does Kayn counter Mordekaiser?
Not clearly. Kayn wins 51.4% of 35 games against Mordekaiser, and the 95% range (35.6–67.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kayn or Mordekaiser?
Mordekaiser usually wins the lane: 983 gold ahead of Kayn at 15 minutes on average (35 games with a 15-minute snapshot).
Does Kayn outscale Mordekaiser?
There are too few games of each length to tell yet.
When is Mordekaiser strongest against Kayn?
Mordekaiser is measurably ahead in: Lane (15 min).
What should Kayn build against Mordekaiser?
There are not enough games for a matchup-specific core, so use Kayn's usual Top core: Eclipse, Death's Dance, Black Cleaver. The biggest change against Mordekaiser: Plated Steelcaps (49.9% usually, 17.1% here).
What runes should Kayn use against Mordekaiser?
Use Kayn's usual Conqueror page (Precision + Sorcery); there are too few games for a matchup-specific page. The biggest change against Mordekaiser: Cosmic Insight (18.0% usually, 37.1% here).