- Win Rate
- 49.5%
- Pick Rate
- 10.8%
- Ban Rate
- 4.2%
Kai'Sa vs Samira
- Patch
- 26.22
- Games
- 21,041
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 14, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Kai'Sa vs Samira (Bot): Kai'Sa wins 46.5% of 734 ranked games over the last 2 patches (gold diff at 15: -464). Patch 26.22 build & runes.
Kai'Sa46.5%
Kai'Sa vs Samira is close over 734 games: Kai'Sa wins 46.5%, and the 95% range (42.9–50.1%) includes 50%, so Samira is only marginally ahead.
Kai'Sa Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Kai'Sa 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 Kai'Sa vs Samira?
Kai'Sa wins 46.5% of these games. With this many games the true rate is most likely between 42.9% and 50.1% (95% range).
- Expected
- 48.5% From both champions' overall Bot win rates
- Matchup effect
- −2.0 pts Observed minus expected
- Sample
- 734 games Lane: Bot · Patch 26.21–26.22
- vs patch 26.21
- −5.4 pts Within normal patch-to-patch noise
Lane: Bot · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.21–26.22 · Oct 27 – Nov 14
The headline win rate covers patches 26.21–26.22 (734 games). The lane, game-length, build and rune sections below use patch 26.22 only (329 games).
Key takeaways
- Kai'Sa vs Samira is close over 734 games: Kai'Sa wins 46.5%, and the 95% range (42.9–50.1%) includes 50%, so Samira is only marginally ahead.
- Both champions' overall Bot win rates predict 48.5% for Kai'Sa; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Samira usually wins the lane: 464 gold ahead of Kai'Sa at 15 minutes on average (322 games with a 15-minute snapshot).
- Kai'Sa players pick Coup de Grace far more often against Samira: 55.1% of their other Bot games, 64.1% 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 Kai'Sa and Samira 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 Kai'Sa'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.
Kai'Sa vs Samira Laning Stats
At 15 minutes
Whole-game averages
Kai'Sa vs Samira Win Rate by Game Length
Kai'Sa's win rate against Samira 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: Kai'Sa's results against Samira in short and long games are within the margin of error of each other.
Kai'Sa vs Samira 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)SamiraKai'Sa gold at 15: −464
- First itemSamiraKai'Sa: 10.6 min · Samira: 10.0 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenKai'Sa wins 42.6% of 162 games
- 30+ min gamesEvenKai'Sa wins 45.4% of 130 games
What Kai'Sa Changes Against Samira
Choices Kai'Sa players make noticeably more or less often in this matchup than in their other Bot games.
Coup de GraceRuneUsually55.1%vs Samira64.1%+9.0 pts44.5% WR here
Cut DownRuneUsually43.9%vs Samira35.0%−9.0 pts41.7% WR here
Health (defense)Stat shardUsually39.7%vs Samira31.3%−8.4 pts41.7% WR here
Cash BackRuneUsually43.3%vs Samira36.2%−7.1 pts46.2% WR here- Health Scaling (defense)Stat shardUsually59.6%vs Samira66.6%+7.0 pts44.7% WR here
Exhaust + FlashSummoner spellsUsually24.7%vs Samira30.7%+6.0 pts45.5% WR here
Best Kai'Sa Build vs Samira
Usual Kai'Sa build (Bot)
71.1% win rate · 38 games
- Kai'Sa usually completes Kraken Slayer first, at 10.6 min (median of 257 games).
- Samira usually completes The Collector first, at 10.0 min (median of 298 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 Kai'Sa Runes vs Samira
Usual Kai'Sa runes (Bot)
Lethal Tempo
80.0% win rate · 15 games
Against Samira
Lethal Tempo
41.7% win rate · 115 games
Plan your Kai'Sa 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
Kai'Sa matchup data for League of Legends patch 26.22. The table below shows Kai'Sa'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 Kai'Sa build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Kai'Sa Matchups
Hardest for Kai'Sa
Easiest for Kai'Sa
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.
Kai'Sa vs Samira FAQ - Patch 26.21–26.22
Who wins Kai'Sa vs Samira?
Kai'Sa vs Samira is close over 734 games: Kai'Sa wins 46.5%, and the 95% range (42.9–50.1%) includes 50%, so Samira is only marginally ahead.
What is Kai'Sa's win rate against Samira?
Kai'Sa wins 46.5% of 734 Bot games against Samira on patch 26.21–26.22 (95% range 42.9–50.1%). Based on both champions' overall Bot win rates, 48.5% would be expected.
Does Kai'Sa counter Samira?
Not clearly. Kai'Sa wins 46.5% of 734 games against Samira, and the 95% range (42.9–50.1%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kai'Sa or Samira?
Samira usually wins the lane: 464 gold ahead of Kai'Sa at 15 minutes on average (322 games with a 15-minute snapshot).
Does Kai'Sa outscale Samira?
Not measurably: Kai'Sa's win rate against Samira in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Samira strongest against Kai'Sa?
Samira is measurably ahead in: Lane (15 min), First item.
What should Kai'Sa build against Samira?
The most successful Kai'Sa core against Samira is Kraken Slayer, Terminus, Guinsoo's Rageblade (51.9% over 52 games).
What runes should Kai'Sa use against Samira?
Lethal Tempo with Precision and Inspiration — 41.7% over 115 games against Samira. The biggest change against Samira: Coup de Grace (55.1% usually, 64.1% here).