- Win Rate
- 53.4%
- Pick Rate
- 1.8%
- Ban Rate
- 9.1%
Rammus vs Amumu
- Patch
- 26.19
- Games
- 1,616
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 4, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Rammus vs Amumu is a decisive matchup in LoL patch 26.19. Rammus wins with a 60.6% win rate (+21.2%) over Amumu based on 33 games. Rammus holds the advantage in both the early and late game. Below you'll find the best Rammus build, runes, laning stats, and strategies for the Rammus vs Amumu 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 Amumu?
Rammus wins 43.8% of these games. With this many games the true rate is most likely between 33.0% and 55.2% (95% range).
- Expected
- 51.8% From both champions' overall Jungle win rates
- Matchup effect
- −7.9 pts Observed minus expected
- Sample
- 73 games Lane: Jungle
- vs patch 26.18
- −6.8 pts Within normal patch-to-patch noise
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Current data slightly favors Amumu, but the sample is too limited for a strong conclusion: Rammus wins 43.8% of 73 games (95% range 33.0–55.2%).
- Both champions' overall Jungle win rates predict 51.8% for Rammus; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Amumu usually wins the lane: 500 gold ahead of Rammus at 15 minutes on average (73 games with a 15-minute snapshot).
- Rammus players pick Mercury's Treads far more often against Amumu: 26.6% of their other Jungle games, 38.4% 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 Amumu 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 Amumu Laning Stats
At 15 minutes
Whole-game averages
Rammus vs Amumu Win Rate by Game Length
Rammus's win rate against Amumu 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 Amumu in short and long games are within the margin of error of each other.
Rammus vs Amumu 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)AmumuRammus gold at 15: −500
- First itemEvenRammus: 0.2 min · Amumu: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Rammus Changes Against Amumu
Choices Rammus players make noticeably more or less often in this matchup than in their other Jungle games.
Mercury's TreadsBootsUsually26.6%vs Amumu38.4%+11.7 pts32.1% WR here
Randuin's OmenItemUsually18.0%vs Amumu8.2%−9.8 pts
Gustwalker HatchlingStarting itemsUsually8.2%vs Amumu15.1%+6.9 pts
Scorchclaw Pup + Health Potion + Stealth WardStarting itemsUsually3.6%vs Amumu8.2%+4.6 pts
HeartsteelItemUsually1.6%vs Amumu5.5%+3.9 pts
Best Rammus Build vs Amumu
Usual Rammus build (Jungle)
68.7% win rate · 83 games
Against Amumu
Not enough matchup-specific build data: only 10 of 43 Rammus games against Amumu carried a complete build, which is too few to recommend an item path from. Use Rammus's standard build instead.
- Rammus usually completes Gustwalker Hatchling first, at 0.2 min (median of 33 games).
- Amumu usually completes Mosstomper Seedling first, at 0.2 min (median of 52 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 Amumu
Usual Rammus runes (Jungle)
Aftershock
53.7% win rate · 1,295 games
Against Amumu
Aftershock41.4% win rate · 29 games
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 Amumu FAQ - Patch 26.19
Who wins Rammus vs Amumu?
Current data slightly favors Amumu, but the sample is too limited for a strong conclusion: Rammus wins 43.8% of 73 games (95% range 33.0–55.2%).
What is Rammus's win rate against Amumu?
Rammus wins 43.8% of 73 Jungle games against Amumu on patch 26.19 (95% range 33.0–55.2%). Based on both champions' overall Jungle win rates, 51.8% would be expected.
Does Rammus counter Amumu?
Not clearly. Rammus wins 43.8% of 73 games against Amumu, and the 95% range (33.0–55.2%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Rammus or Amumu?
Amumu usually wins the lane: 500 gold ahead of Rammus at 15 minutes on average (73 games with a 15-minute snapshot).
Does Rammus outscale Amumu?
There are too few games of each length to tell yet.
When is Amumu strongest against Rammus?
Amumu is measurably ahead in: Lane (15 min).
What should Rammus build against Amumu?
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. The biggest change against Amumu: Mercury's Treads (26.6% usually, 38.4% here).
What runes should Rammus use against Amumu?
Aftershock with Resolve and Precision — 41.4% over 29 games against Amumu.