Caitlynvs Kai'Sa
Caitlyn vs Kai'Sa is a decisive matchup in LoL patch 26.19. Caitlyn wins with a 52.9% win rate (+5.9%) over Kai'Sa based on 459 games. Caitlyn holds the advantage in both the early and late game. Below you'll find the best Caitlyn build, runes, laning stats, and strategies for the Caitlyn vs Kai'Sa matchup.
Caitlyn Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Caitlyn 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 Caitlyn vs Kai'Sa?
Caitlyn wins 49.9% of these games. With this many games the true rate is most likely between 46.9% and 52.9% (95% range).
- Expected
- 50.0% From both champions' overall Bot win rates
- Matchup effect
- −0.1 pts Observed minus expected
- Sample
- 1,050 games Lane: Bot
- vs patch 26.18
- −0.0 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
- Caitlyn vs Kai'Sa is an even matchup: Caitlyn wins 49.9% of 1,050 games, and the 95% range (46.9–52.9%) comfortably includes 50%.
- Both champions' overall Bot win rates predict 50.0% for Caitlyn; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Caitlyn usually wins the lane: 140 gold ahead of Kai'Sa at 15 minutes on average (1,036 games with a 15-minute snapshot).
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 Caitlyn 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 Caitlyn'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.
Caitlyn vs Kai'Sa Laning Stats
At 15 minutes
Whole-game averages
Caitlyn vs Kai'Sa Win Rate by Game Length
Caitlyn'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: Caitlyn's results against Kai'Sa in short and long games are within the margin of error of each other.
Caitlyn 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)CaitlynCaitlyn gold at 15: +140
- First itemEvenCaitlyn: 10.7 min · Kai'Sa: 11.0 min
- Games under 20 minEvenCaitlyn wins 49.4% of 89 games
- 20–30 min gamesEvenCaitlyn wins 49.5% of 418 games
- 30+ min gamesEvenCaitlyn wins 50.3% of 543 games
What Caitlyn Changes Against Kai'Sa
Caitlyn players don't meaningfully change their setup against Kai'Sa: no item, rune, spell or skill order differs by 3 points or more beyond the margin of error. The usual build applies.
Best Caitlyn Build vs Kai'Sa
Usual Caitlyn build (Bot)
90.0% win rate · 10 games
Limited sample: 26 of 735 games finished this exact core, so treat it as an observation rather than a recommendation.
- Caitlyn usually completes Hexoptics C44 first, at 10.7 min (median of 517 games).
- Kai'Sa usually completes Kraken Slayer first, at 11.0 min (median of 588 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 Caitlyn Runes vs Kai'Sa
Usual Caitlyn runes (Bot)
Lethal Tempo
57.5% win rate · 153 games
Against Kai'Sa
Lethal Tempo
54.3% win rate · 519 games
Plan your Caitlyn 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
Caitlyn matchup data for League of Legends patch 26.19. The table below shows Caitlyn'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 Caitlyn build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Caitlyn Matchups
Hardest for Caitlyn
Easiest for Caitlyn
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.
Caitlyn vs Kai'Sa FAQ - Patch 26.19
Who wins Caitlyn vs Kai'Sa?
Caitlyn vs Kai'Sa is an even matchup: Caitlyn wins 49.9% of 1,050 games, and the 95% range (46.9–52.9%) comfortably includes 50%.
What is Caitlyn's win rate against Kai'Sa?
Caitlyn wins 49.9% of 1,050 Bot games against Kai'Sa on patch 26.19 (95% range 46.9–52.9%). Based on both champions' overall Bot win rates, 50.0% would be expected.
Does Caitlyn counter Kai'Sa?
Not clearly. Caitlyn wins 49.9% of 1,050 games against Kai'Sa, and the 95% range (46.9–52.9%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Caitlyn or Kai'Sa?
Caitlyn usually wins the lane: 140 gold ahead of Kai'Sa at 15 minutes on average (1,036 games with a 15-minute snapshot).
Does Caitlyn outscale Kai'Sa?
Not measurably: Caitlyn'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 Caitlyn?
On current data there is no stage of the game where Kai'Sa is ahead of Caitlyn beyond the margin of error.
What should Caitlyn build against Kai'Sa?
The most successful Caitlyn core against Kai'Sa is The Collector, Rapid Firecannon, Bloodthirster (69.2% over 26 games).
What runes should Caitlyn use against Kai'Sa?
Lethal Tempo with Precision and Sorcery — 54.3% over 519 games against Kai'Sa.