Kai'Savs Viktor
Kai'Sa vs Viktor is a decisive matchup in LoL patch 26.19. Viktor wins with a 56.6% win rate (+13.2%) over Kai'Sa based on 76 games. Viktor holds the advantage in both the early and late game. Below you'll find the best Kai'Sa build, runes, laning stats, and strategies for the Kai'Sa vs Viktor matchup.
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 Viktor?
Kai'Sa wins 47.8% of these games. With this many games the true rate is most likely between 39.5% and 56.2% (95% range).
- Expected
- 49.7% From both champions' overall Bot win rates
- Matchup effect
- −1.9 pts Observed minus expected
- Sample
- 134 games Lane: Bot
- vs patch 26.18
- +8.3 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
They also met in another lane (Mid): 8 games, Kai'Sa won 25.0%.
Key takeaways
- Current data slightly favors Viktor, but the sample is too limited for a strong conclusion: Kai'Sa wins 47.8% of 134 games (95% range 39.5–56.2%).
- Both champions' overall Bot win rates predict 49.7% for Kai'Sa; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Kai'Sa usually wins the lane: 305 gold ahead of Viktor at 15 minutes on average (132 games with a 15-minute snapshot).
- Kai'Sa players pick Cash Back far more often against Viktor: 24.7% of their other Bot games, 35.1% 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 Viktor 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 Viktor Laning Stats
At 15 minutes
Whole-game averages
Kai'Sa vs Viktor Win Rate by Game Length
Kai'Sa's win rate against Viktor 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 Viktor in short and long games are within the margin of error of each other.
Kai'Sa vs Viktor 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)Kai'SaKai'Sa gold at 15: +305
- First itemEvenKai'Sa: 11.2 min · Viktor: 11.6 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenKai'Sa wins 47.5% of 59 games
- 30+ min gamesEvenKai'Sa wins 43.9% of 66 games
What Kai'Sa Changes Against Viktor
Choices Kai'Sa players make noticeably more or less often in this matchup than in their other Bot games.
Cash BackRuneUsually24.7%vs Viktor35.1%+10.3 pts57.4% WR here
TriumphRuneUsually20.4%vs Viktor29.9%+9.5 pts55.0% WR here
Presence of MindRuneUsually77.6%vs Viktor68.7%−8.9 pts44.6% WR here
Health (defense)Stat shardUsually18.4%vs Viktor26.9%+8.4 pts55.6% WR here
Wit's EndItemUsually1.2%vs Viktor4.5%+3.3 pts
Best Kai'Sa Build vs Viktor
Usual Kai'Sa build (Bot)
82.6% win rate · 23 games
Against Viktor
Not enough matchup-specific build data: only 14 of 100 Kai'Sa games against Viktor carried a complete build, which is too few to recommend an item path from. Use Kai'Sa's standard build instead.
- Kai'Sa usually completes Kraken Slayer first, at 11.2 min (median of 74 games).
- Viktor usually completes Blackfire Torch first, at 11.6 min (median of 100 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 Viktor
Usual Kai'Sa runes (Bot)
Lethal Tempo
70.4% win rate · 27 games
Against Viktor
Lethal Tempo
42.2% win rate · 45 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 26.19. 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 Viktor FAQ - Patch 26.19
Who wins Kai'Sa vs Viktor?
Current data slightly favors Viktor, but the sample is too limited for a strong conclusion: Kai'Sa wins 47.8% of 134 games (95% range 39.5–56.2%).
What is Kai'Sa's win rate against Viktor?
Kai'Sa wins 47.8% of 134 Bot games against Viktor on patch 26.19 (95% range 39.5–56.2%). Based on both champions' overall Bot win rates, 49.7% would be expected.
Does Kai'Sa counter Viktor?
Not clearly. Kai'Sa wins 47.8% of 134 games against Viktor, and the 95% range (39.5–56.2%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kai'Sa or Viktor?
Kai'Sa usually wins the lane: 305 gold ahead of Viktor at 15 minutes on average (132 games with a 15-minute snapshot).
Does Kai'Sa outscale Viktor?
There are too few games of each length to tell yet.
When is Viktor strongest against Kai'Sa?
On current data there is no stage of the game where Viktor is ahead of Kai'Sa beyond the margin of error.
What should Kai'Sa build against Viktor?
There are not enough games for a matchup-specific core, so use Kai'Sa's usual Bot core: Runaan's Hurricane, Lord Dominik's Regards, Yun Tal Wildarrows. The biggest change against Viktor: Wit's End (1.2% usually, 4.5% here).
What runes should Kai'Sa use against Viktor?
Lethal Tempo with Precision and Inspiration — 42.2% over 45 games against Viktor. The biggest change against Viktor: Cash Back (24.7% usually, 35.1% here).