- Win Rate
- 50.1%
- Pick Rate
- 1.7%
- Ban Rate
- 1.0%
Zac vs Kayn
- Patch
- 26.19
- Games
- 3,406
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 7, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Zac vs Kayn is a decisive matchup in LoL patch 26.19. Kayn wins with a 53.1% win rate (+6.3%) over Zac based on 64 games. Kayn holds the advantage in both the early and late game. Below you'll find the best Zac build, runes, laning stats, and strategies for the Zac vs Kayn matchup.
Zac Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Zac 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 Zac vs Kayn?
Zac wins 45.0% of these games. With this many games the true rate is most likely between 37.2% and 53.0% (95% range).
- Expected
- 49.7% From both champions' overall Jungle win rates
- Matchup effect
- −4.8 pts Observed minus expected
- Sample
- 149 games Lane: Jungle
- vs patch 26.18
- +2.9 pts Within normal patch-to-patch noise
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
They also met in another lane (Top): 3 games, Zac won 33.3%.
Key takeaways
- Current data slightly favors Kayn, but the sample is too limited for a strong conclusion: Zac wins 45.0% of 149 games (95% range 37.2–53.0%).
- Both champions' overall Jungle win rates predict 49.7% for Zac; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Kayn usually wins the lane: 547 gold ahead of Zac at 15 minutes on average (148 games with a 15-minute snapshot).
- Zac players pick Mercury's Treads much less often against Kayn: 29.1% of their other Jungle games, 18.8% 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 Zac and Kayn 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 Zac'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.
Zac vs Kayn Laning Stats
At 15 minutes
Whole-game averages
Zac vs Kayn Win Rate by Game Length
Zac's win rate against Kayn 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: Zac's results against Kayn in short and long games are within the margin of error of each other.
Zac vs Kayn 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)KaynZac gold at 15: −547
- First itemEvenZac: 0.2 min · Kayn: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenZac wins 43.9% of 66 games
- 30+ min gamesEvenZac wins 47.3% of 74 games
What Zac Changes Against Kayn
Choices Zac players make noticeably more or less often in this matchup than in their other Jungle games.
Mercury's TreadsBootsUsually29.1%vs Kayn18.8%−10.3 pts46.4% WR here
Spirit VisageItemUsually61.0%vs Kayn52.3%−8.6 pts47.4% WR here
Best Zac Build vs Kayn
Usual Zac build (Jungle)
84.6% win rate · 13 games
Against Kayn
Not enough matchup-specific build data: only 15 of 87 Zac games against Kayn carried a complete build, which is too few to recommend an item path from. Use Zac's standard build instead.
- Zac usually completes Mosstomper Seedling first, at 0.2 min (median of 82 games).
- Kayn usually completes Scorchclaw Pup first, at 0.2 min (median of 79 games).
- Skill priority: E > W > Q — 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 Zac Runes vs Kayn
Usual Zac runes (Jungle)
Conqueror
52.7% win rate · 406 games
Against Kayn
Aftershock
43.6% win rate · 55 games
Plan your Zac 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
Zac matchup data for League of Legends patch 26.19. The table below shows Zac'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 Zac build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Zac Matchups
Hardest for Zac
Easiest for Zac
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.
Zac vs Kayn FAQ - Patch 26.19
Who wins Zac vs Kayn?
Current data slightly favors Kayn, but the sample is too limited for a strong conclusion: Zac wins 45.0% of 149 games (95% range 37.2–53.0%).
What is Zac's win rate against Kayn?
Zac wins 45.0% of 149 Jungle games against Kayn on patch 26.19 (95% range 37.2–53.0%). Based on both champions' overall Jungle win rates, 49.7% would be expected.
Does Zac counter Kayn?
Not clearly. Zac wins 45.0% of 149 games against Kayn, and the 95% range (37.2–53.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Zac or Kayn?
Kayn usually wins the lane: 547 gold ahead of Zac at 15 minutes on average (148 games with a 15-minute snapshot).
Does Zac outscale Kayn?
There are too few games of each length to tell yet.
When is Kayn strongest against Zac?
Kayn is measurably ahead in: Lane (15 min).
What should Zac build against Kayn?
There are not enough games for a matchup-specific core, so use Zac's usual Jungle core: Jak'Sho, The Protean, Liandry's Torment, Thornmail. The biggest change against Kayn: Mercury's Treads (29.1% usually, 18.8% here).
What runes should Zac use against Kayn?
Aftershock with Resolve and Precision — 43.6% over 55 games against Kayn.