- Win Rate
- 50.0%
- Pick Rate
- 1.4%
- Ban Rate
- 2.3%
Olaf vs Dr. Mundo
- Patch
- 26.20
- Games
- 1,874
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 13, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Olaf vs Dr. Mundo is a decisive matchup in LoL patch 26.20. Dr. Mundo wins with a 56.0% win rate (+12.0%) over Olaf based on 25 games. Olaf wins the early laning phase while Dr. Mundo scales better into the late game. Below you'll find the best Olaf build, runes, laning stats, and strategies for the Olaf vs Dr. Mundo matchup.
Olaf Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Olaf 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 Olaf vs Dr. Mundo?
Olaf wins 40.9% of these games. With this many games the true rate is most likely between 23.3% and 61.3% (95% range).
- Expected
- 49.1% From both champions' overall Top win rates
- Matchup effect
- −8.2 pts Observed minus expected
- Sample
- 22 games Lane: Top
- vs patch 26.19
- — Not enough games on both patches
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 10 – Oct 11
They also met in another lane (Jungle): 3 games, Olaf won 66.7%.
Key takeaways
- Current data slightly favors Dr. Mundo, but the sample is too limited for a strong conclusion: Olaf wins 40.9% of 22 games (95% range 23.3–61.3%).
- Both champions' overall Top win rates predict 49.1% for Olaf; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Olaf players pick Blade of The Ruined King far more often against Dr. Mundo: 4.3% of their other Top games, 18.2% 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 Olaf and Dr. Mundo 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 Olaf'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.
Olaf vs Dr. Mundo Laning Stats
Only 22 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Olaf vs Dr. Mundo Win Rate by Game Length
Olaf's win rate against Dr. Mundo 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: Olaf's results against Dr. Mundo in short and long games are within the margin of error of each other.
Olaf vs Dr. Mundo 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 Olaf Changes Against Dr. Mundo
Choices Olaf players make noticeably more or less often in this matchup than in their other Top games.
Usually4.3%vs Dr. Mundo18.2%+13.9 pts
Adaptive Force (flex)Stat shardUsually96.8%vs Dr. Mundo86.4%−10.5 pts
Doran's Bow + Health Potion + Health PotionStarting itemsUsually0.4%vs Dr. Mundo9.1%+8.7 pts
Doran's Blade + Health Potion + Stealth Ward + Oracle LensStarting itemsUsuallyunder 0.5%vs Dr. Mundo4.5%+4.5 pts
Doran's Blade + Health Potion + Control WardStarting itemsUsuallyunder 0.5%vs Dr. Mundo4.5%+4.5 pts- E > W > Qthe E > W > Q skill orderSkill priorityUsuallyunder 0.5%vs Dr. Mundo4.5%+4.5 pts
Health Scaling (flex)Stat shardUsually0.5%vs Dr. Mundo4.5%+4.0 pts
Usually0.7%vs Dr. Mundo4.5%+3.8 pts
Best Olaf Build vs Dr. Mundo
Usual Olaf build (Top)
80.0% win rate · 15 games
Against Dr. Mundo
Not enough matchup-specific build data: only 2 of 14 Olaf games against Dr. Mundo carried a complete build, which is too few to recommend an item path from. Use Olaf'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 Olaf Runes vs Dr. Mundo
Usual Olaf runes (Top)
Conqueror
52.5% win rate · 446 games
Against Dr. Mundo
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Olaf 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
Olaf matchup data for League of Legends patch 26.20. The table below shows Olaf'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 Olaf build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Olaf Matchups
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.
Olaf vs Dr. Mundo FAQ - Patch 26.20
Who wins Olaf vs Dr. Mundo?
Current data slightly favors Dr. Mundo, but the sample is too limited for a strong conclusion: Olaf wins 40.9% of 22 games (95% range 23.3–61.3%).
What is Olaf's win rate against Dr. Mundo?
Olaf wins 40.9% of 22 Top games against Dr. Mundo on patch 26.20 (95% range 23.3–61.3%). Based on both champions' overall Top win rates, 49.1% would be expected.
Does Olaf counter Dr. Mundo?
Not clearly. Olaf wins 40.9% of 22 games against Dr. Mundo, and the 95% range (23.3–61.3%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Olaf or Dr. Mundo?
There are not enough games with a 15-minute snapshot yet (22) to say who wins lane.
Does Olaf outscale Dr. Mundo?
There are too few games of each length to tell yet.
When is Dr. Mundo strongest against Olaf?
On current data there is no stage of the game where Dr. Mundo is ahead of Olaf beyond the margin of error.
What should Olaf build against Dr. Mundo?
There are not enough games for a matchup-specific core, so use Olaf's usual Top core: Immortal Shieldbow, Death's Dance, Ravenous Hydra. The biggest change against Dr. Mundo: Blade of The Ruined King (4.3% usually, 18.2% here).
What runes should Olaf use against Dr. Mundo?
Use Olaf's usual Conqueror page (Precision + Inspiration); there are too few games for a matchup-specific page. The biggest change against Dr. Mundo: Adaptive Force (flex) (96.8% usually, 86.4% here).