Olafvs Sion
Olaf vs Sion is a decisive matchup in LoL patch 26.19. Olaf wins with a 58.8% win rate (+17.6%) over Sion based on 17 games. Olaf holds the advantage in both the early and late game. Below you'll find the best Olaf build, runes, laning stats, and strategies for the Olaf vs Sion 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 Sion?
Olaf wins 54.3% of these games. With this many games the true rate is most likely between 38.2% and 69.5% (95% range).
- Expected
- 50.6% From both champions' overall Top win rates
- Matchup effect
- +3.7 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
Key takeaways
- Current data slightly favors Olaf, but the sample is too limited for a strong conclusion: Olaf wins 54.3% of 35 games (95% range 38.2–69.5%).
- Both champions' overall Top win rates predict 50.6% for Olaf; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Neither side reliably wins the lane: the average gold difference at 15 minutes is 285, within the margin of error (34 games).
- Olaf players pick Doran's Blade + Health Potion + Stealth Ward far more often against Sion: 25.8% of their other Top games, 42.9% 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 Sion 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 Sion Laning Stats
At 15 minutes
Whole-game averages
Olaf vs Sion Win Rate by Game Length
Olaf's win rate against Sion 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 Sion in short and long games are within the margin of error of each other.
Olaf vs Sion 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)EvenOlaf gold at 15: +285
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Olaf Changes Against Sion
Choices Olaf players make noticeably more or less often in this matchup than in their other Top games.
Doran's Blade + Health Potion + Stealth WardStarting itemsUsually25.8%vs Sion42.9%+17.1 pts
ResolveSecondary treeUsually26.5%vs Sion11.4%−15.1 pts
TriumphRuneUsually96.1%vs Sion88.6%−7.6 pts58.1% WR here
Black CleaverItemUsually2.1%vs Sion8.6%+6.5 pts
Presence of MindRuneUsually2.3%vs Sion8.6%+6.3 pts
Best Olaf Build vs Sion
Usual Olaf build (Top)
83.3% win rate · 24 games
Against Sion
Not enough matchup-specific build data: only 4 of 20 Olaf games against Sion carried a complete build, which is too few to recommend an item path from. Use Olaf's standard build instead.
- Olaf usually completes Stridebreaker first, at 12.2 min (median of 20 games).
- 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 Sion
Usual Olaf runes (Top)
Conqueror
51.3% win rate · 733 games
Against Sion
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 26.19. 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
Hardest for Olaf
Easiest for Olaf
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 Sion FAQ - Patch 26.19
Who wins Olaf vs Sion?
Current data slightly favors Olaf, but the sample is too limited for a strong conclusion: Olaf wins 54.3% of 35 games (95% range 38.2–69.5%).
What is Olaf's win rate against Sion?
Olaf wins 54.3% of 35 Top games against Sion on patch 26.19 (95% range 38.2–69.5%). Based on both champions' overall Top win rates, 50.6% would be expected.
Does Olaf counter Sion?
Not clearly. Olaf wins 54.3% of 35 games against Sion, and the 95% range (38.2–69.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Olaf or Sion?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 285, within the margin of error (34 games).
Does Olaf outscale Sion?
There are too few games of each length to tell yet.
When is Sion strongest against Olaf?
On current data there is no stage of the game where Sion is ahead of Olaf beyond the margin of error.
What should Olaf build against Sion?
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 Sion: Doran's Blade + Health Potion + Stealth Ward (25.8% usually, 42.9% here).
What runes should Olaf use against Sion?
Use Olaf's usual Conqueror page (Precision + Inspiration); there are too few games for a matchup-specific page. The biggest change against Sion: Resolve (26.5% usually, 11.4% here).