Olafvs Sejuani
Olaf vs Sejuani is a decisive matchup in LoL patch 26.19. Olaf wins with a 70.0% win rate (+40.0%) over Sejuani based on 10 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 Sejuani 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 Sejuani?
Olaf wins 50.0% of these games. With this many games the true rate is most likely between 26.8% and 73.2% (95% range).
- Expected
- 45.1% From both champions' overall Jungle win rates
- Matchup effect
- +4.9 pts Observed minus expected
- Sample
- 14 games Lane: Jungle
- vs patch 26.18
- — Not enough games on both patches
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
They also met in another lane (Top): 5 games, Olaf won 40.0%.
Key takeaways
- Only 14 Olaf vs Sejuani games were recorded in the Jungle role on patch 26.19 — too few to say who is favored. Treat the numbers below as provisional.
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 Sejuani 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 Sejuani Laning Stats
Only 12 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Olaf vs Sejuani Win Rate by Game Length
Olaf's win rate against Sejuani 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 Sejuani in short and long games are within the margin of error of each other.
Olaf vs Sejuani 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 Sejuani
Only 14 games so far — too few to compare what Olaf players do in this matchup with their usual choices (needs 20).
Best Olaf Build vs Sejuani
Usual Olaf build (Jungle)
84.6% win rate · 13 games
Against Sejuani
Not enough matchup-specific build data: only 0 of 14 Olaf games against Sejuani carried a complete build, which is too few to recommend an item path from. Use Olaf's standard build instead.
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 Sejuani
Usual Olaf runes (Jungle)
Conqueror
50.0% win rate · 200 games
Against Sejuani
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 Sejuani FAQ - Patch 26.19
Who wins Olaf vs Sejuani?
Only 14 Olaf vs Sejuani games were recorded in the Jungle role on patch 26.19 — too few to say who is favored. Treat the numbers below as provisional.
What is Olaf's win rate against Sejuani?
Olaf wins 50.0% of 14 Jungle games against Sejuani on patch 26.19 (95% range 26.8–73.2%). Based on both champions' overall Jungle win rates, 45.1% would be expected.
Does Olaf counter Sejuani?
There are only 14 Olaf vs Sejuani games in this lane on patch 26.19 — too few to answer reliably yet.
Who wins lane, Olaf or Sejuani?
There are not enough games with a 15-minute snapshot yet (12) to say who wins lane.
Does Olaf outscale Sejuani?
There are too few games of each length to tell yet.
When is Sejuani strongest against Olaf?
On current data there is no stage of the game where Sejuani is ahead of Olaf beyond the margin of error.
What should Olaf build against Sejuani?
There are not enough games for a matchup-specific core, so use Olaf's usual Jungle core: Death's Dance, Ravenous Hydra, Experimental Hexplate.
What runes should Olaf use against Sejuani?
Use Olaf's usual Conqueror page (Precision + Inspiration); there are too few games for a matchup-specific page.