- Win Rate
- 49.1%
- Pick Rate
- 1.3%
- Ban Rate
- 0.6%
Nunu & Willump vs Sejuani
- Patch
- 26.19
- Games
- 2,659
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 8, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Nunu & Willump vs Sejuani is a decisive matchup in LoL patch 26.19. Nunu & Willump wins with a 52.6% win rate (+5.3%) over Sejuani based on 19 games. Nunu & Willump wins the early laning phase while Sejuani scales better into the late game. Below you'll find the best Nunu & Willump build, runes, laning stats, and strategies for the Nunu & Willump vs Sejuani matchup.
Nunu & Willump Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Nunu & Willump 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 Nunu & Willump vs Sejuani?
Nunu & Willump wins 48.1% of these games. With this many games the true rate is most likely between 30.7% and 66.0% (95% range).
- Expected
- 47.8% From both champions' overall Jungle win rates
- Matchup effect
- +0.4 pts Observed minus expected
- Sample
- 27 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
Key takeaways
- Current data slightly favors Sejuani, but the sample is too limited for a strong conclusion: Nunu & Willump wins 48.1% of 27 games (95% range 30.7–66.0%).
- Both champions' overall Jungle win rates predict 47.8% for Nunu & Willump; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Nunu & Willump players pick Gustwalker Hatchling + Health Potion far more often against Sejuani: 10.1% of their other Jungle games, 22.2% 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 Nunu & Willump 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 Nunu & Willump'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.
Nunu & Willump vs Sejuani Laning Stats
Only 27 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Nunu & Willump vs Sejuani Win Rate by Game Length
Nunu & Willump'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: Nunu & Willump's results against Sejuani in short and long games are within the margin of error of each other.
Nunu & Willump 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 Nunu & Willump Changes Against Sejuani
Choices Nunu & Willump players make noticeably more or less often in this matchup than in their other Jungle games.
Gustwalker Hatchling + Health PotionStarting itemsUsually10.1%vs Sejuani22.2%+12.1 pts
Usually1.1%vs Sejuani7.4%+6.3 pts
Force of NatureItemUsually1.2%vs Sejuani7.4%+6.2 pts
Shield BashRuneUsuallyunder 0.5%vs Sejuani3.7%+3.7 pts
Deep WardRuneUsuallyunder 0.5%vs Sejuani3.7%+3.7 pts
Smite + IgniteSummoner spellsUsually0.6%vs Sejuani3.7%+3.1 pts
Best Nunu & Willump Build vs Sejuani
Usual Nunu & Willump build (Jungle)
76.9% win rate · 13 games
Against Sejuani
Not enough matchup-specific build data: only 2 of 15 Nunu & Willump games against Sejuani carried a complete build, which is too few to recommend an item path from. Use Nunu & Willump's standard build instead.
- Sejuani usually completes Mosstomper Seedling first, at 0.1 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 Nunu & Willump Runes vs Sejuani
Usual Nunu & Willump runes (Jungle)
Stormraider's Surge
80.0% win rate · 15 games
Against Sejuani
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Nunu & Willump 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
Nunu & Willump matchup data for League of Legends patch 26.19. The table below shows Nunu & Willump'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 Nunu & Willump build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Nunu & Willump Matchups
Hardest for Nunu & Willump
Easiest for Nunu & Willump
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.
Nunu & Willump vs Sejuani FAQ - Patch 26.19
Who wins Nunu & Willump vs Sejuani?
Current data slightly favors Sejuani, but the sample is too limited for a strong conclusion: Nunu & Willump wins 48.1% of 27 games (95% range 30.7–66.0%).
What is Nunu & Willump's win rate against Sejuani?
Nunu & Willump wins 48.1% of 27 Jungle games against Sejuani on patch 26.19 (95% range 30.7–66.0%). Based on both champions' overall Jungle win rates, 47.8% would be expected.
Does Nunu & Willump counter Sejuani?
Not clearly. Nunu & Willump wins 48.1% of 27 games against Sejuani, and the 95% range (30.7–66.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Nunu & Willump or Sejuani?
There are not enough games with a 15-minute snapshot yet (27) to say who wins lane.
Does Nunu & Willump outscale Sejuani?
There are too few games of each length to tell yet.
When is Sejuani strongest against Nunu & Willump?
On current data there is no stage of the game where Sejuani is ahead of Nunu & Willump beyond the margin of error.
What should Nunu & Willump build against Sejuani?
There are not enough games for a matchup-specific core, so use Nunu & Willump's usual Jungle core: Liandry's Torment, Zhonya's Hourglass, Hextech Rocketbelt. The biggest change against Sejuani: Gustwalker Hatchling + Health Potion (10.1% usually, 22.2% here).
What runes should Nunu & Willump use against Sejuani?
Use Nunu & Willump's usual Stormraider's Surge page (Sorcery + Precision); there are too few games for a matchup-specific page. The biggest change against Sejuani: Hextech Flashtraption (1.1% usually, 7.4% here).