Kaynvs Master Yi
Kayn vs Master Yi is a very close matchup in LoL patch 26.18. Kayn wins with a 50.3% win rate (+0.6%) over Master Yi based on 308 games. Master Yi wins the early laning phase while Kayn scales better into the late game. Below you'll find the best Kayn build, runes, laning stats, and strategies for the Kayn vs Master Yi matchup.
Kayn Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Kayn 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 Kayn vs Master Yi?
Kayn wins 50.0% of these games. With this many games the true rate is most likely between 44.3% and 55.7% (95% range).
- Expected
- 51.7% From both champions' overall Jungle win rates
- Matchup effect
- −1.7 pts Observed minus expected
- Sample
- 288 games Lane: Jungle
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.18 · Sep 11 – Sep 14
Key takeaways
- Kayn vs Master Yi is an even matchup: Kayn wins 50.0% of 288 games, and the 95% range (44.3–55.7%) comfortably includes 50%.
- Both champions' overall Jungle win rates predict 51.7% for Kayn; 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 99, within the margin of error (281 games).
- Kayn players pick Hubris far more often against Master Yi: 28.1% of their other Jungle games, 37.2% 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 Kayn and Master Yi 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 Kayn'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.
Kayn vs Master Yi Laning Stats
At 15 minutes
Solo kills are tracked from this patch on — 0 games have them so far, shown from 30.
Whole-game averages
Kayn vs Master Yi Win Rate by Game Length
Kayn's win rate against Master Yi 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: Kayn's results against Master Yi in short and long games are within the margin of error of each other.
Kayn vs Master Yi 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)EvenKayn gold at 15: −99
- First itemEvenKayn: 0.2 min · Master Yi: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenKayn wins 51.8% of 112 games
- 30+ min gamesEvenKayn wins 51.0% of 147 games
What Kayn Changes Against Master Yi
Choices Kayn players make noticeably more or less often in this matchup than in their other Jungle games.
HubrisItemUsually28.1%vs Master Yi37.2%+9.0 pts50.5% WR here
Mercury's TreadsBootsUsually20.5%vs Master Yi11.8%−8.7 pts58.8% WR here
Black CleaverItemUsually33.6%vs Master Yi25.7%−7.9 pts58.1% WR here
Plated SteelcapsBootsUsually29.7%vs Master Yi36.1%+6.4 pts49.0% WR here
Spirit VisageItemUsually12.3%vs Master Yi7.3%−5.0 pts47.6% WR here
Best Kayn Build vs Master Yi
Usual Kayn build (Jungle)
66.4% win rate · 119 games
Against Master Yi
Not enough matchup-specific build data: only 15 of 195 Kayn games against Master Yi carried a complete build, which is too few to recommend an item path from. Use Kayn's standard build instead.
- Kayn usually completes Scorchclaw Pup first, at 0.2 min (median of 122 games).
- Master Yi usually completes Gustwalker Hatchling first, at 0.2 min (median of 113 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 Kayn Runes vs Master Yi
Usual Kayn runes (Jungle)
Dark Harvest
59.2% win rate · 152 games
Against Master Yi
Conqueror
52.9% win rate · 70 games
Kayn matchup data for League of Legends patch 26.18. The table below shows Kayn'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 Kayn build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Kayn Matchups
Hardest for Kayn
Easiest for Kayn
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.
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Kayn vs Master Yi FAQ - Patch 26.18
Who wins Kayn vs Master Yi?
Kayn vs Master Yi is an even matchup: Kayn wins 50.0% of 288 games, and the 95% range (44.3–55.7%) comfortably includes 50%.
What is Kayn's win rate against Master Yi?
Kayn wins 50.0% of 288 Jungle games against Master Yi on patch 26.18 (95% range 44.3–55.7%). Based on both champions' overall Jungle win rates, 51.7% would be expected.
Does Kayn counter Master Yi?
Not clearly. Kayn wins 50.0% of 288 games against Master Yi, and the 95% range (44.3–55.7%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kayn or Master Yi?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 99, within the margin of error (281 games).
Does Kayn outscale Master Yi?
Not measurably: Kayn's win rate against Master Yi in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Master Yi strongest against Kayn?
On current data there is no stage of the game where Master Yi is ahead of Kayn beyond the margin of error.
What should Kayn build against Master Yi?
There are not enough games for a matchup-specific core, so use Kayn's usual Jungle core: Voltaic Cyclosword, Axiom Arc, Serylda's Grudge. The biggest change against Master Yi: Hubris (28.1% usually, 37.2% here).
What runes should Kayn use against Master Yi?
Conqueror with Precision and Sorcery — 52.9% over 70 games against Master Yi.