Sionvs Dr. Mundo
Sion vs Dr. Mundo is a decisive matchup in LoL patch 26.19. Sion wins with a 56.0% win rate (+12.0%) over Dr. Mundo based on 25 games. Sion wins the early laning phase while Dr. Mundo scales better into the late game. Below you'll find the best Sion build, runes, laning stats, and strategies for the Sion vs Dr. Mundo matchup.
Sion Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Sion 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 Sion vs Dr. Mundo?
Sion wins 53.3% of these games. With this many games the true rate is most likely between 39.1% and 67.1% (95% range).
- Expected
- 47.3% From both champions' overall Top win rates
- Matchup effect
- +6.0 pts Observed minus expected
- Sample
- 45 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
Key takeaways
- Current data slightly favors Sion, but the sample is too limited for a strong conclusion: Sion wins 53.3% of 45 games (95% range 39.1–67.1%).
- Both champions' overall Top win rates predict 47.3% for Sion; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Sion usually wins the lane: 376 gold ahead of Dr. Mundo at 15 minutes on average (44 games with a 15-minute snapshot).
- Sion players pick Precision far more often against Dr. Mundo: 28.8% of their other Top games, 44.4% 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 Sion 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 Sion'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.
Sion vs Dr. Mundo Laning Stats
At 15 minutes
Whole-game averages
Sion vs Dr. Mundo Win Rate by Game Length
Sion'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: Sion's results against Dr. Mundo in short and long games are within the margin of error of each other.
Sion 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)SionSion gold at 15: +376
- First itemEvenSion: 12.5 min · Dr. Mundo: 12.4 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Sion Changes Against Dr. Mundo
Choices Sion players make noticeably more or less often in this matchup than in their other Top games.
PrecisionSecondary treeUsually28.8%vs Dr. Mundo44.4%+15.6 pts70.0% WR here
TriumphRuneUsually25.4%vs Dr. Mundo40.0%+14.6 pts
Legend: AlacrityRuneUsually1.5%vs Dr. Mundo6.7%+5.1 pts
Best Sion Build vs Dr. Mundo
Usual Sion build (Top)
68.5% win rate · 54 games
Against Dr. Mundo
Not enough matchup-specific build data: only 3 of 27 Sion games against Dr. Mundo carried a complete build, which is too few to recommend an item path from. Use Sion's standard build instead.
- Sion usually completes Heartsteel first, at 12.5 min (median of 27 games).
- Dr. Mundo usually completes Warmog's Armor first, at 12.4 min (median of 23 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 Sion Runes vs Dr. Mundo
Usual Sion runes (Top)
Grasp of the Undying
56.4% win rate · 156 games
Against Dr. Mundo
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Sion 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
Sion matchup data for League of Legends patch 26.19. The table below shows Sion'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 Sion build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Sion Matchups
Hardest for Sion
Easiest for Sion
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.
Sion vs Dr. Mundo FAQ - Patch 26.19
Who wins Sion vs Dr. Mundo?
Current data slightly favors Sion, but the sample is too limited for a strong conclusion: Sion wins 53.3% of 45 games (95% range 39.1–67.1%).
What is Sion's win rate against Dr. Mundo?
Sion wins 53.3% of 45 Top games against Dr. Mundo on patch 26.19 (95% range 39.1–67.1%). Based on both champions' overall Top win rates, 47.3% would be expected.
Does Sion counter Dr. Mundo?
Not clearly. Sion wins 53.3% of 45 games against Dr. Mundo, and the 95% range (39.1–67.1%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Sion or Dr. Mundo?
Sion usually wins the lane: 376 gold ahead of Dr. Mundo at 15 minutes on average (44 games with a 15-minute snapshot).
Does Sion outscale Dr. Mundo?
There are too few games of each length to tell yet.
When is Dr. Mundo strongest against Sion?
On current data there is no stage of the game where Dr. Mundo is ahead of Sion beyond the margin of error.
What should Sion build against Dr. Mundo?
There are not enough games for a matchup-specific core, so use Sion's usual Top core: Titanic Hydra, Heartsteel, Unending Despair.
What runes should Sion use against Dr. Mundo?
Use Sion's usual Grasp of the Undying page (Resolve + Inspiration); there are too few games for a matchup-specific page. The biggest change against Dr. Mundo: Precision (28.8% usually, 44.4% here).