- Win Rate
- 51.1%
- Pick Rate
- 1.7%
- Ban Rate
- 0.9%
Zac vs Master Yi
- Patch
- 26.20
- Games
- 2,211
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 14, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Zac vs Master Yi is a moderate matchup in LoL patch 26.20. Zac wins with a 51.9% win rate (+3.7%) over Master Yi based on 54 games. Zac wins the early laning phase while Master Yi scales better into the late game. Below you'll find the best Zac build, runes, laning stats, and strategies for the Zac vs Master Yi 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 Master Yi?
Zac wins 52.8% of these games. With this many games the true rate is most likely between 39.7% and 65.6% (95% range).
- Expected
- 48.7% From both champions' overall Jungle win rates
- Matchup effect
- +4.2 pts Observed minus expected
- Sample
- 53 games Lane: Jungle
- vs patch 26.19
- +3.3 pts Within normal patch-to-patch noise
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 9 – Oct 11
Key takeaways
- Current data slightly favors Zac, but the sample is too limited for a strong conclusion: Zac wins 52.8% of 53 games (95% range 39.7–65.6%).
- Both champions' overall Jungle win rates predict 48.7% for Zac; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Master Yi usually wins the lane: 520 gold ahead of Zac at 15 minutes on average (53 games with a 15-minute snapshot).
- Zac players pick Thornmail far more often against Master Yi: 38.2% of their other Jungle games, 54.7% 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 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 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 Master Yi Laning Stats
At 15 minutes
Whole-game averages
Zac vs Master Yi Win Rate by Game Length
Zac'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: Zac's results against Master Yi in short and long games are within the margin of error of each other.
Zac 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)Master YiZac gold at 15: −520
- First itemEvenZac: 0.2 min · Master Yi: 0.2 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Zac Changes Against Master Yi
Choices Zac players make noticeably more or less often in this matchup than in their other Jungle games.
ThornmailItemUsually38.2%vs Master Yi54.7%+16.6 pts51.7% WR here
Mercury's TreadsBootsUsually26.5%vs Master Yi11.3%−15.2 pts
Plated SteelcapsBootsUsually21.0%vs Master Yi35.8%+14.8 pts
OvergrowthRuneUsually1.6%vs Master Yi5.7%+4.0 pts
Best Zac Build vs Master Yi
Usual Zac build (Jungle)
67.1% win rate · 70 games
Against Master Yi
Not enough matchup-specific build data: only 7 of 36 Zac games against Master Yi 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 35 games).
- Master Yi usually completes Gustwalker Hatchling first, at 0.2 min (median of 26 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 Master Yi
Usual Zac runes (Jungle)
Aftershock
55.1% win rate · 474 games
Against Master Yi
Too few games for a matchup-specific rune page yet — use the usual page.
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 26.20. 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 Master Yi FAQ - Patch 26.20
Who wins Zac vs Master Yi?
Current data slightly favors Zac, but the sample is too limited for a strong conclusion: Zac wins 52.8% of 53 games (95% range 39.7–65.6%).
What is Zac's win rate against Master Yi?
Zac wins 52.8% of 53 Jungle games against Master Yi on patch 26.20 (95% range 39.7–65.6%). Based on both champions' overall Jungle win rates, 48.7% would be expected.
Does Zac counter Master Yi?
Not clearly. Zac wins 52.8% of 53 games against Master Yi, and the 95% range (39.7–65.6%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Zac or Master Yi?
Master Yi usually wins the lane: 520 gold ahead of Zac at 15 minutes on average (53 games with a 15-minute snapshot).
Does Zac outscale Master Yi?
There are too few games of each length to tell yet.
When is Master Yi strongest against Zac?
Master Yi is measurably ahead in: Lane (15 min).
What should Zac build against Master Yi?
There are not enough games for a matchup-specific core, so use Zac's usual Jungle core: Hextech Rocketbelt, Thornmail, Sunfire Aegis. The biggest change against Master Yi: Thornmail (38.2% usually, 54.7% here).
What runes should Zac use against Master Yi?
Use Zac's usual Aftershock page (Resolve + Precision); there are too few games for a matchup-specific page. The biggest change against Master Yi: Overgrowth (1.6% usually, 5.7% here).