- Win Rate
- 46.4%
- Pick Rate
- 4.5%
- Ban Rate
- 2.7%
Ezreal vs Kai'Sa
- Patch
- 26.19
- Games
- 4,113
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 5, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Ezreal vs Kai'Sa is a decisive matchup in LoL patch 26.19. Kai'Sa wins with a 56.0% win rate (+12.1%) over Ezreal based on 282 games. Ezreal wins the early laning phase while Kai'Sa scales better into the late game. Below you'll find the best Ezreal build, runes, laning stats, and strategies for the Ezreal vs Kai'Sa matchup.
Ezreal Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Ezreal 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 Ezreal vs Kai'Sa?
Ezreal wins 42.9% of these games. With this many games the true rate is most likely between 39.1% and 46.8% (95% range).
- Expected
- 45.9% From both champions' overall Bot win rates
- Matchup effect
- −3.0 pts Observed minus expected
- Sample
- 620 games Lane: Bot
- vs patch 26.18
- −0.2 pts Within normal patch-to-patch noise
Lane: Bot · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Kai'Sa consistently wins this matchup across a large current-patch sample: Ezreal wins 42.9% of 620 games (95% range 39.1–46.8%).
- Both champions' overall Bot win rates predict 45.9% for Ezreal; 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 42, within the margin of error (609 games).
- Ezreal players pick Cash Back far more often against Kai'Sa: 21.6% of their other Bot games, 26.3% 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 Ezreal and Kai'Sa 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 Ezreal'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.
Ezreal vs Kai'Sa Laning Stats
At 15 minutes
Whole-game averages
Ezreal vs Kai'Sa Win Rate by Game Length
Ezreal's win rate against Kai'Sa 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: Ezreal's results against Kai'Sa in short and long games are within the margin of error of each other.
Ezreal vs Kai'Sa 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)EvenEzreal gold at 15: −42
- First itemKai'SaEzreal: 12.3 min · Kai'Sa: 11.0 min
- Games under 20 minEvenEzreal wins 44.8% of 58 games
- 20–30 min gamesEvenEzreal wins 44.5% of 272 games
- 30+ min gamesKai'SaEzreal wins 41.0% of 290 games
What Ezreal Changes Against Kai'Sa
Choices Ezreal players make noticeably more or less often in this matchup than in their other Bot games.
Cash BackRuneUsually21.6%vs Kai'Sa26.3%+4.7 pts46.6% WR here
Best Ezreal Build vs Kai'Sa
Usual Ezreal build (Bot)
60.4% win rate · 111 games
Against Kai'Sa
51.0% win rate · 100 games
- Ezreal usually completes Trinity Force first, at 12.3 min (median of 499 games).
- Kai'Sa usually completes Kraken Slayer first, at 11.0 min (median of 367 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 Ezreal Runes vs Kai'Sa
Usual Ezreal runes (Bot)
Lethal Tempo
52.1% win rate · 267 games
Against Kai'Sa
Lethal Tempo55.2% win rate · 29 games
Plan your Ezreal 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
Ezreal matchup data for League of Legends patch 26.19. The table below shows Ezreal'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 Ezreal build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Ezreal Matchups
Hardest for Ezreal
Easiest for Ezreal
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.
Ezreal vs Kai'Sa FAQ - Patch 26.19
Who wins Ezreal vs Kai'Sa?
Kai'Sa consistently wins this matchup across a large current-patch sample: Ezreal wins 42.9% of 620 games (95% range 39.1–46.8%).
What is Ezreal's win rate against Kai'Sa?
Ezreal wins 42.9% of 620 Bot games against Kai'Sa on patch 26.19 (95% range 39.1–46.8%). Based on both champions' overall Bot win rates, 45.9% would be expected.
Does Ezreal counter Kai'Sa?
No — it is the other way around: Ezreal wins only 42.9% of 620 games against Kai'Sa, and the whole 95% range is below 50%.
Who wins lane, Ezreal or Kai'Sa?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 42, within the margin of error (609 games).
Does Ezreal outscale Kai'Sa?
Not measurably: Ezreal's win rate against Kai'Sa in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Kai'Sa strongest against Ezreal?
Kai'Sa is measurably ahead in: First item, 30+ min games.
What should Ezreal build against Kai'Sa?
The most successful Ezreal core against Kai'Sa is Spear of Shojin, Trinity Force, Muramana (51.0% over 100 games).
What runes should Ezreal use against Kai'Sa?
Lethal Tempo with Precision and Inspiration — 55.2% over 29 games against Kai'Sa. The biggest change against Kai'Sa: Cash Back (21.6% usually, 26.3% here).