- Win Rate
- 50.3%
- Pick Rate
- 2.3%
- Ban Rate
- 4.0%
Dr. Mundo vs Kayn
- Patch
- 26.20
- Games
- 2,998
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 15, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Dr. Mundo vs Kayn is a moderate matchup in LoL patch 26.20. Kayn wins with a 51.2% win rate (+2.4%) over Dr. Mundo based on 41 games. Dr. Mundo wins the early laning phase while Kayn scales better into the late game. Below you'll find the best Dr. Mundo build, runes, laning stats, and strategies for the Dr. Mundo vs Kayn matchup.
Dr. Mundo Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Dr. Mundo 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 Dr. Mundo vs Kayn?
Dr. Mundo wins 38.1% of these games. With this many games the true rate is most likely between 20.8% and 59.1% (95% range).
- Expected
- 51.2% From both champions' overall Jungle win rates
- Matchup effect
- −13.1 pts Observed minus expected
- Sample
- 21 games Lane: Jungle
- vs patch 26.19
- — Not enough games on both patches
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 10 – Oct 11
They also met in another lane (Top): 16 games, Dr. Mundo won 62.5%.
Key takeaways
- Current data slightly favors Kayn, but the sample is too limited for a strong conclusion: Dr. Mundo wins 38.1% of 21 games (95% range 20.8–59.1%).
- Both champions' overall Jungle win rates predict 51.2% for Dr. Mundo; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Dr. Mundo players pick Magical Footwear much less often against Kayn: 81.2% of their other Jungle games, 57.1% 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 Dr. Mundo and Kayn 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 Dr. Mundo'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.
Dr. Mundo vs Kayn Laning Stats
Only 21 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Dr. Mundo vs Kayn Win Rate by Game Length
Dr. Mundo's win rate against Kayn 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: Dr. Mundo's results against Kayn in short and long games are within the margin of error of each other.
Dr. Mundo vs Kayn 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)Insufficient data
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Dr. Mundo Changes Against Kayn
Choices Dr. Mundo players make noticeably more or less often in this matchup than in their other Jungle games.
Magical FootwearRuneUsually81.2%vs Kayn57.1%−24.1 pts
InspirationSecondary treeUsually83.5%vs Kayn61.9%−21.6 pts
Usually82.0%vs Kayn61.9%−20.1 pts
ResolveSecondary treeUsually13.5%vs Kayn33.3%+19.8 pts
ConditioningRuneUsually14.0%vs Kayn33.3%+19.3 pts
Ability Haste (offense)Stat shardUsually13.0%vs Kayn28.6%+15.5 pts
Sundered SkyItemUsuallyunder 0.5%vs Kayn4.8%+4.8 pts
Gustwalker Hatchling + Health Potion + Refillable Potion + Stealth WardStarting itemsUsuallyunder 0.5%vs Kayn4.8%+4.8 pts
Best Dr. Mundo Build vs Kayn
Usual Dr. Mundo build (Jungle)
57.6% win rate · 33 games
Against Kayn
Not enough matchup-specific build data: only 3 of 14 Dr. Mundo games against Kayn carried a complete build, which is too few to recommend an item path from. Use Dr. Mundo's standard build instead.
- 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 Dr. Mundo Runes vs Kayn
Usual Dr. Mundo runes (Jungle)
Grasp of the Undying
58.1% win rate · 62 games
Against Kayn
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Dr. Mundo 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
Dr. Mundo matchup data for League of Legends patch 26.20. The table below shows Dr. Mundo'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 Dr. Mundo build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Dr. Mundo Matchups
Hardest for Dr. Mundo
Easiest for Dr. Mundo
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.
Dr. Mundo vs Kayn FAQ - Patch 26.20
Who wins Dr. Mundo vs Kayn?
Current data slightly favors Kayn, but the sample is too limited for a strong conclusion: Dr. Mundo wins 38.1% of 21 games (95% range 20.8–59.1%).
What is Dr. Mundo's win rate against Kayn?
Dr. Mundo wins 38.1% of 21 Jungle games against Kayn on patch 26.20 (95% range 20.8–59.1%). Based on both champions' overall Jungle win rates, 51.2% would be expected.
Does Dr. Mundo counter Kayn?
Not clearly. Dr. Mundo wins 38.1% of 21 games against Kayn, and the 95% range (20.8–59.1%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Dr. Mundo or Kayn?
There are not enough games with a 15-minute snapshot yet (21) to say who wins lane.
Does Dr. Mundo outscale Kayn?
There are too few games of each length to tell yet.
When is Kayn strongest against Dr. Mundo?
On current data there is no stage of the game where Kayn is ahead of Dr. Mundo beyond the margin of error.
What should Dr. Mundo build against Kayn?
There are not enough games for a matchup-specific core, so use Dr. Mundo's usual Jungle core: Titanic Hydra, Dead Man's Plate, Heartsteel. The biggest change against Kayn: Sundered Sky (under 0.5% usually, 4.8% here).
What runes should Dr. Mundo use against Kayn?
Use Dr. Mundo's usual Grasp of the Undying page (Resolve + Inspiration); there are too few games for a matchup-specific page. The biggest change against Kayn: Magical Footwear (81.2% usually, 57.1% here).