- Win Rate
- 51.2%
- Pick Rate
- 2.9%
- Ban Rate
- 0.9%
Sion vs Mordekaiser
- Patch
- 26.22
- Games
- 5,641
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 14, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Sion vs Mordekaiser (Top): Sion wins 48.4% of 256 ranked games over the last 2 patches (gold diff at 15: -377). Patch 26.22 build & runes.
Sion48.4%
Current data slightly favors Mordekaiser, but the sample is too limited for a strong conclusion: Sion wins 48.4% of 256 games (95% range 42.4–54.5%).
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 Mordekaiser?
Sion wins 48.4% of these games. With this many games the true rate is most likely between 42.4% and 54.5% (95% range).
- Expected
- 51.1% From both champions' overall Top win rates
- Matchup effect
- −2.7 pts Observed minus expected
- Sample
- 256 games Lane: Top · Patch 26.21–26.22
- vs patch 26.21
- +9.2 pts Within normal patch-to-patch noise
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.21–26.22 · Oct 27 – Nov 14
The headline win rate covers patches 26.21–26.22 (256 games). The lane, game-length, build and rune sections below use patch 26.22 only (96 games).
Key takeaways
- Current data slightly favors Mordekaiser, but the sample is too limited for a strong conclusion: Sion wins 48.4% of 256 games (95% range 42.4–54.5%).
- Both champions' overall Top win rates predict 51.1% for Sion; 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: 377 gold ahead of Sion at 15 minutes on average (95 games with a 15-minute snapshot).
- Sion players pick Plated Steelcaps much less often against Mordekaiser: 52.9% of their other Top games, 13.5% 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 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 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 Mordekaiser Laning Stats
At 15 minutes
Whole-game averages
Sion vs Mordekaiser Win Rate by Game Length
Sion'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: Sion's results against Mordekaiser in short and long games are within the margin of error of each other.
Sion 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)MordekaiserSion gold at 15: −377
- First itemEvenSion: 11.1 min · Mordekaiser: 10.9 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenSion wins 60.0% of 40 games
- 30+ min gamesEvenSion wins 44.2% of 43 games
What Sion Changes Against Mordekaiser
Choices Sion players make noticeably more or less often in this matchup than in their other Top games.
Plated SteelcapsBootsUsually52.9%vs Mordekaiser13.5%−39.3 pts
Hollow RadianceItemUsually29.0%vs Mordekaiser67.7%+38.7 pts60.0% WR here
Mercury's TreadsBootsUsually20.8%vs Mordekaiser42.7%+22.0 pts58.5% WR here
Sunfire AegisItemUsually21.9%vs Mordekaiser5.2%−16.7 pts
ConditioningRuneUsually64.3%vs Mordekaiser79.2%+14.9 pts52.6% WR here
Boots of SwiftnessBootsUsually19.3%vs Mordekaiser33.3%+14.0 pts37.5% WR here
DemolishRuneUsually71.5%vs Mordekaiser84.4%+12.9 pts54.3% WR here
Unending DespairItemUsually50.3%vs Mordekaiser37.5%−12.8 pts58.3% WR here
Best Sion Build vs Mordekaiser
Usual Sion build (Top)
78.6% win rate · 28 games
Against Mordekaiser
Not enough matchup-specific build data: only 5 of 49 Sion games against Mordekaiser carried a complete build, which is too few to recommend an item path from. Use Sion's standard build instead.
- Sion usually completes Hollow Radiance first, at 11.1 min (median of 53 games).
- Mordekaiser usually completes Rylai's Crystal Scepter first, at 10.9 min (median of 62 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 Mordekaiser
Usual Sion runes (Top)
Grasp of the Undying
77.3% win rate · 22 games
Against Mordekaiser
Grasp of the Undying53.3% win rate · 45 games
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 26.22. 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 Mordekaiser FAQ - Patch 26.21–26.22
Who wins Sion vs Mordekaiser?
Current data slightly favors Mordekaiser, but the sample is too limited for a strong conclusion: Sion wins 48.4% of 256 games (95% range 42.4–54.5%).
What is Sion's win rate against Mordekaiser?
Sion wins 48.4% of 256 Top games against Mordekaiser on patch 26.21–26.22 (95% range 42.4–54.5%). Based on both champions' overall Top win rates, 51.1% would be expected.
Does Sion counter Mordekaiser?
Not clearly. Sion wins 48.4% of 256 games against Mordekaiser, and the 95% range (42.4–54.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Sion or Mordekaiser?
Mordekaiser usually wins the lane: 377 gold ahead of Sion at 15 minutes on average (95 games with a 15-minute snapshot).
Does Sion outscale Mordekaiser?
There are too few games of each length to tell yet.
When is Mordekaiser strongest against Sion?
Mordekaiser is measurably ahead in: Lane (15 min).
What should Sion build against Mordekaiser?
There are not enough games for a matchup-specific core, so use Sion's usual Top core: Jak'Sho, The Protean, Hollow Radiance, Heartsteel. The biggest change against Mordekaiser: Plated Steelcaps (52.9% usually, 13.5% here).
What runes should Sion use against Mordekaiser?
Grasp of the Undying with Resolve and Inspiration — 53.3% over 45 games against Mordekaiser. The biggest change against Mordekaiser: Conditioning (64.3% usually, 79.2% here).