- Win Rate
- 50.1%
- Pick Rate
- 2.4%
- Ban Rate
- 13.5%
Illaoi vs Jayce
- Patch
- 26.19
- Games
- 2,131
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 5, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Illaoi vs Jayce is a decisive matchup in LoL patch 26.19. Illaoi wins with a 75.0% win rate (+50.0%) over Jayce based on 16 games. Illaoi holds the advantage in both the early and late game. Below you'll find the best Illaoi build, runes, laning stats, and strategies for the Illaoi vs Jayce matchup.
Illaoi Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Illaoi 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 Illaoi vs Jayce?
Illaoi wins 59.5% of these games. With this many games the true rate is most likely between 44.5% and 73.0% (95% range).
- Expected
- 52.7% From both champions' overall Top win rates
- Matchup effect
- +6.8 pts Observed minus expected
- Sample
- 42 games Lane: Top
- vs patch 26.18
- — Not enough games on both patches
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Current data slightly favors Illaoi, but the sample is too limited for a strong conclusion: Illaoi wins 59.5% of 42 games (95% range 44.5–73.0%).
- Both champions' overall Top win rates predict 52.7% for Illaoi; 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: 712 gold ahead of Jayce at 15 minutes on average (42 games with a 15-minute snapshot).
- Illaoi players pick Iceborn Gauntlet far more often against Jayce: 59.3% of their other Top games, 81.0% 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 Illaoi and Jayce 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 Illaoi'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.
Illaoi vs Jayce Laning Stats
At 15 minutes
Whole-game averages
Illaoi vs Jayce Win Rate by Game Length
Illaoi's win rate against Jayce 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: Illaoi's results against Jayce in short and long games are within the margin of error of each other.
Illaoi vs Jayce 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)IllaoiIllaoi gold at 15: +712
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Illaoi Changes Against Jayce
Choices Illaoi players make noticeably more or less often in this matchup than in their other Top games.
Iceborn GauntletItemUsually59.3%vs Jayce81.0%+21.6 pts55.9% WR here
Plated SteelcapsBootsUsually53.0%vs Jayce69.0%+16.0 pts58.6% WR here- Q > W > Ethe Q > W > E skill orderSkill priorityUsuallyunder 0.5%vs Jayce9.5%+9.5 pts
Second WindRuneUsually6.3%vs Jayce14.3%+8.0 pts
Randuin's OmenItemUsually4.4%vs Jayce11.9%+7.5 pts
TranscendenceRuneUsually2.1%vs Jayce7.1%+5.0 pts
ConditioningRuneUsually2.3%vs Jayce7.1%+4.8 pts
Best Illaoi Build vs Jayce
Usual Illaoi build (Top)
63.9% win rate · 205 games
Against Jayce
Not enough matchup-specific build data: only 5 of 28 Illaoi games against Jayce carried a complete build, which is too few to recommend an item path from. Use Illaoi's standard build instead.
- Skill priority: E > Q > 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 Illaoi Runes vs Jayce
Usual Illaoi runes (Top)
Grasp of the Undying
49.8% win rate · 1,547 games
Against Jayce
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Illaoi 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
Illaoi matchup data for League of Legends patch 26.19. The table below shows Illaoi'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 Illaoi build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Illaoi Matchups
Hardest for Illaoi
Easiest for Illaoi
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.
Illaoi vs Jayce FAQ - Patch 26.19
Who wins Illaoi vs Jayce?
Current data slightly favors Illaoi, but the sample is too limited for a strong conclusion: Illaoi wins 59.5% of 42 games (95% range 44.5–73.0%).
What is Illaoi's win rate against Jayce?
Illaoi wins 59.5% of 42 Top games against Jayce on patch 26.19 (95% range 44.5–73.0%). Based on both champions' overall Top win rates, 52.7% would be expected.
Does Illaoi counter Jayce?
Not clearly. Illaoi wins 59.5% of 42 games against Jayce, and the 95% range (44.5–73.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Illaoi or Jayce?
Illaoi usually wins the lane: 712 gold ahead of Jayce at 15 minutes on average (42 games with a 15-minute snapshot).
Does Illaoi outscale Jayce?
There are too few games of each length to tell yet.
When is Jayce strongest against Illaoi?
On current data there is no stage of the game where Jayce is ahead of Illaoi beyond the margin of error.
What should Illaoi build against Jayce?
There are not enough games for a matchup-specific core, so use Illaoi's usual Top core: Iceborn Gauntlet, Black Cleaver, Sterak's Gage. The biggest change against Jayce: Iceborn Gauntlet (59.3% usually, 81.0% here).
What runes should Illaoi use against Jayce?
Use Illaoi's usual Grasp of the Undying page (Resolve + Precision); there are too few games for a matchup-specific page. The biggest change against Jayce: Second Wind (6.3% usually, 14.3% here).