- Win Rate
- 46.5%
- Pick Rate
- 1.7%
- Ban Rate
- 4.2%
Rengar vs Jarvan IV
- Patch
- 26.20
- Games
- 3,478
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 17, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Rengar vs Jarvan IV is a very close matchup in LoL patch 26.20. Rengar wins with a 50.9% win rate (+1.7%) over Jarvan IV based on 59 games. Rengar wins the early laning phase while Jarvan IV scales better into the late game. Below you'll find the best Rengar build, runes, laning stats, and strategies for the Rengar vs Jarvan IV matchup.
Rengar Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Rengar 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 Rengar vs Jarvan IV?
Rengar wins 50.0% of these games. With this many games the true rate is most likely between 37.5% and 62.5% (95% range).
- Expected
- 46.4% From both champions' overall Jungle win rates
- Matchup effect
- +3.6 pts Observed minus expected
- Sample
- 58 games Lane: Jungle
- vs patch 26.19
- +1.8 pts Within normal patch-to-patch noise
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 9 – Oct 17
Key takeaways
- Rengar vs Jarvan IV is an even matchup: Rengar wins 50.0% of 58 games, and the 95% range (37.5–62.5%) comfortably includes 50%.
- Both champions' overall Jungle win rates predict 46.4% for Rengar; 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 28, within the margin of error (57 games).
- Rengar players pick Conqueror far more often against Jarvan IV: 28.6% of their other Jungle games, 50.0% 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 Rengar and Jarvan IV 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 Rengar'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.
Rengar vs Jarvan IV Laning Stats
At 15 minutes
Whole-game averages
Rengar vs Jarvan IV Win Rate by Game Length
Rengar's win rate against Jarvan IV 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: Rengar's results against Jarvan IV in short and long games are within the margin of error of each other.
Rengar vs Jarvan IV 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)EvenRengar gold at 15: +28
- First itemEvenRengar: 0.2 min · Jarvan IV: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Rengar Changes Against Jarvan IV
Choices Rengar players make noticeably more or less often in this matchup than in their other Jungle games.
ConquerorKeystoneUsually28.6%vs Jarvan IV50.0%+21.4 pts51.7% WR here
Coup de GraceRuneUsually27.4%vs Jarvan IV39.7%+12.3 pts43.5% WR here
Black CleaverItemUsually0.5%vs Jarvan IV5.2%+4.6 pts
EclipseItemUsually0.9%vs Jarvan IV5.2%+4.3 pts
Death's DanceItemUsually1.2%vs Jarvan IV5.2%+4.0 pts
Gathering StormRuneUsually1.4%vs Jarvan IV5.2%+3.7 pts
Gustwalker Hatchling + Stealth Ward + Stealth WardStarting itemsUsuallyunder 0.5%vs Jarvan IV3.4%+3.4 pts
Best Rengar Build vs Jarvan IV
Usual Rengar build (Jungle)
56.4% win rate · 236 games
Against Jarvan IV
Not enough matchup-specific build data: only 5 of 35 Rengar games against Jarvan IV carried a complete build, which is too few to recommend an item path from. Use Rengar's standard build instead.
- Rengar usually completes Gustwalker Hatchling first, at 0.2 min (median of 43 games).
- Jarvan IV usually completes Scorchclaw Pup first, at 0.2 min (median of 38 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 Rengar Runes vs Jarvan IV
Usual Rengar runes (Jungle)
Conqueror
67.9% win rate · 28 games
Against Jarvan IV
Conqueror
45.0% win rate · 20 games
Plan your Rengar 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
Rengar matchup data for League of Legends patch 26.20. The table below shows Rengar'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 Rengar build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Rengar Matchups
Hardest for Rengar
Easiest for Rengar
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.
Rengar vs Jarvan IV FAQ - Patch 26.20
Who wins Rengar vs Jarvan IV?
Rengar vs Jarvan IV is an even matchup: Rengar wins 50.0% of 58 games, and the 95% range (37.5–62.5%) comfortably includes 50%.
What is Rengar's win rate against Jarvan IV?
Rengar wins 50.0% of 58 Jungle games against Jarvan IV on patch 26.20 (95% range 37.5–62.5%). Based on both champions' overall Jungle win rates, 46.4% would be expected.
Does Rengar counter Jarvan IV?
Not clearly. Rengar wins 50.0% of 58 games against Jarvan IV, and the 95% range (37.5–62.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Rengar or Jarvan IV?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 28, within the margin of error (57 games).
Does Rengar outscale Jarvan IV?
There are too few games of each length to tell yet.
When is Jarvan IV strongest against Rengar?
On current data there is no stage of the game where Jarvan IV is ahead of Rengar beyond the margin of error.
What should Rengar build against Jarvan IV?
There are not enough games for a matchup-specific core, so use Rengar's usual Jungle core: Profane Hydra, Edge of Night, Umbral Glaive. The biggest change against Jarvan IV: Black Cleaver (0.5% usually, 5.2% here).
What runes should Rengar use against Jarvan IV?
Conqueror with Precision and Domination — 45.0% over 20 games against Jarvan IV. The biggest change against Jarvan IV: Conqueror (28.6% usually, 50.0% here).