- Win Rate
- 49.0%
- Pick Rate
- 6.4%
- Ban Rate
- 2.8%
Kai'Sa vs Kog'Maw
- Patch
- 26.19
- Games
- 5,795
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 5, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Kai'Sa vs Kog'Maw is a decisive matchup in LoL patch 26.19. Kog'Maw wins with a 61.1% win rate (+22.2%) over Kai'Sa based on 54 games. Kog'Maw 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 Kog'Maw 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 Kog'Maw?
Kai'Sa wins 44.3% of these games. With this many games the true rate is most likely between 36.3% and 52.6% (95% range).
- Expected
- 44.8% From both champions' overall Bot win rates
- Matchup effect
- −0.5 pts Observed minus expected
- Sample
- 140 games Lane: Bot
- vs patch 26.18
- +3.0 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
- Current data slightly favors Kog'Maw, but the sample is too limited for a strong conclusion: Kai'Sa wins 44.3% of 140 games (95% range 36.3–52.6%).
- Both champions' overall Bot win rates predict 44.8% for Kai'Sa; 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 67, within the margin of error (136 games).
- Kai'Sa players pick Guinsoo's Rageblade much less often against Kog'Maw: 76.6% of their other Bot games, 69.3% 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 Kai'Sa and Kog'Maw 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 Kog'Maw Laning Stats
At 15 minutes
Whole-game averages
Kai'Sa vs Kog'Maw Win Rate by Game Length
Kai'Sa's win rate against Kog'Maw 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 Kog'Maw in short and long games are within the margin of error of each other.
Kai'Sa vs Kog'Maw 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)EvenKai'Sa gold at 15: +67
- First itemKai'SaKai'Sa: 11.1 min · Kog'Maw: 12.6 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenKai'Sa wins 51.8% of 56 games
- 30+ min gamesEvenKai'Sa wins 40.3% of 72 games
What Kai'Sa Changes Against Kog'Maw
Choices Kai'Sa players make noticeably more or less often in this matchup than in their other Bot games.
Usually76.6%vs Kog'Maw69.3%−7.3 pts44.3% WR here
Press the AttackKeystoneUsually14.3%vs Kog'Maw7.9%−6.5 pts
Usually1.7%vs Kog'Maw5.7%+4.0 pts
Best Kai'Sa Build vs Kog'Maw
Usual Kai'Sa build (Bot)
82.6% win rate · 23 games
Against Kog'Maw
Not enough matchup-specific build data: only 16 of 106 Kai'Sa games against Kog'Maw 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 11.1 min (median of 72 games).
- Kog'Maw usually completes Guinsoo's Rageblade first, at 12.6 min (median of 68 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 Kog'Maw
Usual Kai'Sa runes (Bot)
Lethal Tempo
70.4% win rate · 27 games
Against Kog'Maw
Lethal Tempo
41.8% win rate · 55 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 Kog'Maw FAQ - Patch 26.19
Who wins Kai'Sa vs Kog'Maw?
Current data slightly favors Kog'Maw, but the sample is too limited for a strong conclusion: Kai'Sa wins 44.3% of 140 games (95% range 36.3–52.6%).
What is Kai'Sa's win rate against Kog'Maw?
Kai'Sa wins 44.3% of 140 Bot games against Kog'Maw on patch 26.19 (95% range 36.3–52.6%). Based on both champions' overall Bot win rates, 44.8% would be expected.
Does Kai'Sa counter Kog'Maw?
Not clearly. Kai'Sa wins 44.3% of 140 games against Kog'Maw, and the 95% range (36.3–52.6%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kai'Sa or Kog'Maw?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 67, within the margin of error (136 games).
Does Kai'Sa outscale Kog'Maw?
There are too few games of each length to tell yet.
When is Kog'Maw strongest against Kai'Sa?
On current data there is no stage of the game where Kog'Maw is ahead of Kai'Sa beyond the margin of error.
What should Kai'Sa build against Kog'Maw?
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 Kog'Maw: Guinsoo's Rageblade (76.6% usually, 69.3% here).
What runes should Kai'Sa use against Kog'Maw?
Lethal Tempo with Precision and Inspiration — 41.8% over 55 games against Kog'Maw. The biggest change against Kog'Maw: Press the Attack (14.3% usually, 7.9% here).