- Win Rate
- 53.5%
- Pick Rate
- 1.9%
- Ban Rate
- 9.3%
Rammus vs Sejuani
- Patch
- 26.19
- Games
- 3,692
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 8, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Rammus vs Sejuani is a decisive matchup in LoL patch 26.19. Sejuani wins with a 52.9% win rate (+5.9%) over Rammus based on 17 games. Rammus wins the early laning phase while Sejuani scales better into the late game. Below you'll find the best Rammus build, runes, laning stats, and strategies for the Rammus vs Sejuani matchup.
Rammus Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Rammus 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 Rammus vs Sejuani?
Rammus wins 52.3% of these games. With this many games the true rate is most likely between 37.9% and 66.2% (95% range).
- Expected
- 52.4% From both champions' overall Jungle win rates
- Matchup effect
- −0.1 pts Observed minus expected
- Sample
- 44 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 Rammus, but the sample is too limited for a strong conclusion: Rammus wins 52.3% of 44 games (95% range 37.9–66.2%).
- Both champions' overall Jungle win rates predict 52.4% for Rammus; 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 232, within the margin of error (43 games).
- Rammus players pick Exhaust + Smite far more often against Sejuani: under 0.5% of their other Jungle games, 4.5% 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 Rammus 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 Rammus'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.
Rammus vs Sejuani Laning Stats
At 15 minutes
Whole-game averages
Rammus vs Sejuani Win Rate by Game Length
Rammus'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: Rammus's results against Sejuani in short and long games are within the margin of error of each other.
Rammus 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)EvenRammus gold at 15: −232
- First itemEvenRammus: 0.2 min · Sejuani: 0.1 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Rammus Changes Against Sejuani
Choices Rammus players make noticeably more or less often in this matchup than in their other Jungle games.
Exhaust + SmiteSummoner spellsUsuallyunder 0.5%vs Sejuani4.5%+4.5 pts
Second WindRuneUsuallyunder 0.5%vs Sejuani4.5%+4.5 pts
Cosmic InsightRuneUsually0.8%vs Sejuani4.5%+3.7 pts
Best Rammus Build vs Sejuani
Usual Rammus build (Jungle)
68.7% win rate · 83 games
Against Sejuani
Not enough matchup-specific build data: only 9 of 27 Rammus games against Sejuani carried a complete build, which is too few to recommend an item path from. Use Rammus's standard build instead.
- Rammus usually completes Mosstomper Seedling first, at 0.2 min (median of 23 games).
- Sejuani usually completes Mosstomper Seedling first, at 0.1 min (median of 34 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 Rammus Runes vs Sejuani
Usual Rammus runes (Jungle)
Aftershock
53.7% win rate · 1,295 games
Against Sejuani
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Rammus 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
Rammus matchup data for League of Legends patch 26.19. The table below shows Rammus'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 Rammus build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Rammus Matchups
Hardest for Rammus
Easiest for Rammus
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.
Rammus vs Sejuani FAQ - Patch 26.19
Who wins Rammus vs Sejuani?
Current data slightly favors Rammus, but the sample is too limited for a strong conclusion: Rammus wins 52.3% of 44 games (95% range 37.9–66.2%).
What is Rammus's win rate against Sejuani?
Rammus wins 52.3% of 44 Jungle games against Sejuani on patch 26.19 (95% range 37.9–66.2%). Based on both champions' overall Jungle win rates, 52.4% would be expected.
Does Rammus counter Sejuani?
Not clearly. Rammus wins 52.3% of 44 games against Sejuani, and the 95% range (37.9–66.2%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Rammus or Sejuani?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 232, within the margin of error (43 games).
Does Rammus outscale Sejuani?
There are too few games of each length to tell yet.
When is Sejuani strongest against Rammus?
On current data there is no stage of the game where Sejuani is ahead of Rammus beyond the margin of error.
What should Rammus build against Sejuani?
There are not enough games for a matchup-specific core, so use Rammus's usual Jungle core: Jak'Sho, The Protean, Randuin's Omen, Thornmail.
What runes should Rammus use against Sejuani?
Use Rammus's usual Aftershock page (Resolve + Precision); there are too few games for a matchup-specific page. The biggest change against Sejuani: Exhaust + Smite (under 0.5% usually, 4.5% here).