- Win Rate
- 50.1%
- Pick Rate
- 4.9%
- Ban Rate
- 4.3%
Sett vs Illaoi
- Patch
- 26.20
- Games
- 6,373
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 14, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Sett vs Illaoi is a moderate matchup in LoL patch 26.20. Sett wins with a 51.0% win rate (+2.1%) over Illaoi based on 145 games. Illaoi wins the early laning phase while Sett scales better into the late game. Below you'll find the best Sett build, runes, laning stats, and strategies for the Sett vs Illaoi matchup.
Sett Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Sett 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 Sett vs Illaoi?
Sett wins 50.7% of these games. With this many games the true rate is most likely between 42.6% and 58.8% (95% range).
- Expected
- 50.0% From both champions' overall Top win rates
- Matchup effect
- +0.7 pts Observed minus expected
- Sample
- 142 games Lane: Top
- vs patch 26.19
- +2.1 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
- Sett vs Illaoi is an even matchup: Sett wins 50.7% of 142 games, and the 95% range (42.6–58.8%) comfortably includes 50%.
- Both champions' overall Top win rates predict 50.0% for Sett; 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: 735 gold ahead of Sett at 15 minutes on average (142 games with a 15-minute snapshot).
- Sett players pick Plated Steelcaps far more often against Illaoi: 48.1% of their other Top games, 76.1% 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 Sett 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 Sett'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.
Sett vs Illaoi Laning Stats
At 15 minutes
Whole-game averages
Sett vs Illaoi Win Rate by Game Length
Sett'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: Sett's results against Illaoi in short and long games are within the margin of error of each other.
Sett 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)IllaoiSett gold at 15: −735
- First itemIllaoiSett: 14.1 min · Illaoi: 12.0 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenSett wins 53.1% of 49 games
- 30+ min gamesEvenSett wins 50.0% of 84 games
What Sett Changes Against Illaoi
Choices Sett players make noticeably more or less often in this matchup than in their other Top games.
Plated SteelcapsBootsUsually48.1%vs Illaoi76.1%+27.9 pts49.1% WR here
Mercury's TreadsBootsUsually25.5%vs Illaoi8.5%−17.0 pts
StridebreakerItemUsually81.9%vs Illaoi70.4%−11.4 pts51.0% WR here
Usually21.2%vs Illaoi31.0%+9.8 pts65.9% WR here
Boots of SwiftnessBootsUsually17.3%vs Illaoi8.5%−8.8 pts
ThornmailItemUsually3.9%vs Illaoi12.0%+8.1 pts
Grasp of the UndyingKeystoneUsually10.5%vs Illaoi16.2%+5.7 pts43.5% WR here
Best Sett Build vs Illaoi
Usual Sett build (Top)
70.7% win rate · 58 games
Against Illaoi
Not enough matchup-specific build data: only 10 of 74 Sett games against Illaoi carried a complete build, which is too few to recommend an item path from. Use Sett's standard build instead.
- Sett usually completes Stridebreaker first, at 14.1 min (median of 79 games).
- Illaoi usually completes Black Cleaver first, at 12.0 min (median of 85 games).
- Skill priority: Q > W > E — 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 Sett Runes vs Illaoi
Usual Sett runes (Top)
Conqueror
78.9% win rate · 19 games
Against Illaoi
Conqueror
61.9% win rate · 21 games
Plan your Sett 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
Sett matchup data for League of Legends patch 26.20. The table below shows Sett'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 Sett build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Sett Matchups
Hardest for Sett
Easiest for Sett
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.
Sett vs Illaoi FAQ - Patch 26.20
Who wins Sett vs Illaoi?
Sett vs Illaoi is an even matchup: Sett wins 50.7% of 142 games, and the 95% range (42.6–58.8%) comfortably includes 50%.
What is Sett's win rate against Illaoi?
Sett wins 50.7% of 142 Top games against Illaoi on patch 26.20 (95% range 42.6–58.8%). Based on both champions' overall Top win rates, 50.0% would be expected.
Does Sett counter Illaoi?
Not clearly. Sett wins 50.7% of 142 games against Illaoi, and the 95% range (42.6–58.8%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Sett or Illaoi?
Illaoi usually wins the lane: 735 gold ahead of Sett at 15 minutes on average (142 games with a 15-minute snapshot).
Does Sett outscale Illaoi?
There are too few games of each length to tell yet.
When is Illaoi strongest against Sett?
Illaoi is measurably ahead in: Lane (15 min), First item.
What should Sett build against Illaoi?
There are not enough games for a matchup-specific core, so use Sett's usual Top core: Stridebreaker, Hullbreaker, Sterak's Gage. The biggest change against Illaoi: Plated Steelcaps (48.1% usually, 76.1% here).
What runes should Sett use against Illaoi?
Conqueror with Precision and Resolve — 61.9% over 21 games against Illaoi. The biggest change against Illaoi: Grasp of the Undying (10.5% usually, 16.2% here).