Jarvan IVvs Sejuani
Jarvan IV vs Sejuani is a decisive matchup in LoL patch 26.19. Sejuani wins with a 62.5% win rate (+25.0%) over Jarvan IV based on 24 games. Sejuani holds the advantage in both the early and late game. Below you'll find the best Jarvan IV build, runes, laning stats, and strategies for the Jarvan IV vs Sejuani matchup.
Jarvan IV Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Jarvan IV 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 Jarvan IV vs Sejuani?
Jarvan IV wins 52.6% of these games. With this many games the true rate is most likely between 39.9% and 65.0% (95% range).
- Expected
- 48.1% From both champions' overall Jungle win rates
- Matchup effect
- +4.5 pts Observed minus expected
- Sample
- 57 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 Jarvan IV, but the sample is too limited for a strong conclusion: Jarvan IV wins 52.6% of 57 games (95% range 39.9–65.0%).
- Both champions' overall Jungle win rates predict 48.1% for Jarvan IV; 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 189, within the margin of error (57 games).
- Jarvan IV players pick Black Cleaver far more often against Sejuani: 40.0% of their other Jungle games, 57.9% 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 Jarvan IV 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 Jarvan IV'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.
Jarvan IV vs Sejuani Laning Stats
At 15 minutes
Whole-game averages
Jarvan IV vs Sejuani Win Rate by Game Length
Jarvan IV'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: Jarvan IV's results against Sejuani in short and long games are within the margin of error of each other.
Jarvan IV 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)EvenJarvan IV gold at 15: +189
- First itemEvenJarvan IV: 0.2 min · Sejuani: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Jarvan IV Changes Against Sejuani
Choices Jarvan IV players make noticeably more or less often in this matchup than in their other Jungle games.
Black CleaverItemUsually40.0%vs Sejuani57.9%+17.9 pts51.5% WR here
Usually21.8%vs Sejuani10.5%−11.3 pts
BastionbreakerItemUsually10.9%vs Sejuaniunder 2%−10.9 pts
Usually2.6%vs Sejuani7.0%+4.4 pts
RevitalizeRuneUsually0.9%vs Sejuani5.3%+4.3 pts
Best Jarvan IV Build vs Sejuani
Usual Jarvan IV build (Jungle)
70.3% win rate · 74 games
Against Sejuani
Not enough matchup-specific build data: only 4 of 36 Jarvan IV games against Sejuani carried a complete build, which is too few to recommend an item path from. Use Jarvan IV's standard build instead.
- Jarvan IV usually completes Scorchclaw Pup first, at 0.2 min (median of 39 games).
- Sejuani usually completes Mosstomper Seedling first, at 0.2 min (median of 39 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 Jarvan IV Runes vs Sejuani
Usual Jarvan IV runes (Jungle)
Conqueror
54.3% win rate · 361 games
Against Sejuani
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Jarvan IV 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
Jarvan IV matchup data for League of Legends patch 26.19. The table below shows Jarvan IV'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 Jarvan IV build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Jarvan IV Matchups
Hardest for Jarvan IV
Easiest for Jarvan IV
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.
Jarvan IV vs Sejuani FAQ - Patch 26.19
Who wins Jarvan IV vs Sejuani?
Current data slightly favors Jarvan IV, but the sample is too limited for a strong conclusion: Jarvan IV wins 52.6% of 57 games (95% range 39.9–65.0%).
What is Jarvan IV's win rate against Sejuani?
Jarvan IV wins 52.6% of 57 Jungle games against Sejuani on patch 26.19 (95% range 39.9–65.0%). Based on both champions' overall Jungle win rates, 48.1% would be expected.
Does Jarvan IV counter Sejuani?
Not clearly. Jarvan IV wins 52.6% of 57 games against Sejuani, and the 95% range (39.9–65.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Jarvan IV or Sejuani?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 189, within the margin of error (57 games).
Does Jarvan IV outscale Sejuani?
There are too few games of each length to tell yet.
When is Sejuani strongest against Jarvan IV?
On current data there is no stage of the game where Sejuani is ahead of Jarvan IV beyond the margin of error.
What should Jarvan IV build against Sejuani?
There are not enough games for a matchup-specific core, so use Jarvan IV's usual Jungle core: Voltaic Cyclosword, Profane Hydra, Axiom Arc. The biggest change against Sejuani: Black Cleaver (40.0% usually, 57.9% here).
What runes should Jarvan IV use against Sejuani?
Use Jarvan IV's usual Conqueror page (Precision + Inspiration); there are too few games for a matchup-specific page. The biggest change against Sejuani: Revitalize (0.9% usually, 5.3% here).