- Win Rate
- 51.0%
- Pick Rate
- 3.8%
- Ban Rate
- 7.9%
Jax vs Illaoi
- Patch
- 26.20
- Games
- 4,970
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 12, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Jax vs Illaoi is a decisive matchup in LoL patch 26.20. Illaoi wins with a 56.8% win rate (+13.7%) over Jax based on 95 games. Illaoi holds the advantage in both the early and late game. Below you'll find the best Jax build, runes, laning stats, and strategies for the Jax vs Illaoi matchup.
Jax Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Jax 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 Jax vs Illaoi?
Jax wins 41.9% of these games. With this many games the true rate is most likely between 32.0% and 52.4% (95% range).
- Expected
- 50.9% From both champions' overall Top win rates
- Matchup effect
- −9.0 pts Observed minus expected
- Sample
- 86 games Lane: Top
- vs patch 26.19
- −6.1 pts Within normal patch-to-patch noise
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 9 – Oct 11
Key takeaways
- Current data slightly favors Illaoi, but the sample is too limited for a strong conclusion: Jax wins 41.9% of 86 games (95% range 32.0–52.4%).
- Both champions' overall Top win rates predict 50.9% for Jax; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Illaoi usually wins the lane: 965 gold ahead of Jax at 15 minutes on average (85 games with a 15-minute snapshot).
- Jax players pick Plated Steelcaps far more often against Illaoi: 50.4% of their other Top games, 72.1% 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 Jax and Illaoi 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 Jax'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.
Jax vs Illaoi Laning Stats
At 15 minutes
Whole-game averages
Jax vs Illaoi Win Rate by Game Length
Jax's win rate against Illaoi 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: Jax's results against Illaoi in short and long games are within the margin of error of each other.
Jax vs Illaoi 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)IllaoiJax gold at 15: −965
- First itemIllaoiJax: 13.5 min · Illaoi: 11.0 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesEvenJax wins 48.8% of 41 games
What Jax Changes Against Illaoi
Choices Jax players make noticeably more or less often in this matchup than in their other Top games.
Plated SteelcapsBootsUsually50.4%vs Illaoi72.1%+21.7 pts41.9% WR here
Mercury's TreadsBootsUsually31.7%vs Illaoi11.6%−20.1 pts
Best Jax Build vs Illaoi
Usual Jax build (Top)
61.5% win rate · 135 games
Against Illaoi
Not enough matchup-specific build data: only 4 of 31 Jax games against Illaoi carried a complete build, which is too few to recommend an item path from. Use Jax's standard build instead.
- Jax usually completes Trinity Force first, at 13.5 min (median of 49 games).
- Illaoi usually completes Black Cleaver first, at 11.0 min (median of 45 games).
- Skill priority: W > E > Q — 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 Jax Runes vs Illaoi
Usual Jax runes (Top)
Lethal Tempo
50.4% win rate · 1,316 games
Against Illaoi
Lethal Tempo34.4% win rate · 32 games
Plan your Jax 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
Jax matchup data for League of Legends patch 26.20. The table below shows Jax'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 Jax build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Jax Matchups
Hardest for Jax
Easiest for Jax
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.
Jax vs Illaoi FAQ - Patch 26.20
Who wins Jax vs Illaoi?
Current data slightly favors Illaoi, but the sample is too limited for a strong conclusion: Jax wins 41.9% of 86 games (95% range 32.0–52.4%).
What is Jax's win rate against Illaoi?
Jax wins 41.9% of 86 Top games against Illaoi on patch 26.20 (95% range 32.0–52.4%). Based on both champions' overall Top win rates, 50.9% would be expected.
Does Jax counter Illaoi?
Not clearly. Jax wins 41.9% of 86 games against Illaoi, and the 95% range (32.0–52.4%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Jax or Illaoi?
Illaoi usually wins the lane: 965 gold ahead of Jax at 15 minutes on average (85 games with a 15-minute snapshot).
Does Jax outscale Illaoi?
There are too few games of each length to tell yet.
When is Illaoi strongest against Jax?
Illaoi is measurably ahead in: Lane (15 min), First item.
What should Jax build against Illaoi?
There are not enough games for a matchup-specific core, so use Jax's usual Top core: Sundered Sky, Zhonya's Hourglass, Trinity Force. The biggest change against Illaoi: Plated Steelcaps (50.4% usually, 72.1% here).
What runes should Jax use against Illaoi?
Lethal Tempo with Precision and Resolve — 34.4% over 32 games against Illaoi.