How are champion matchup win rates calculated?

Win rates are calculated from thousands of ranked games in Emerald+ elo on the current patch. Data is sourced from OP.GG and updated regularly.

What does a 55% win rate matchup mean?

A 55% win rate means Champion 1 wins 55 out of every 100 games against Champion 2 in ranked. Anything above 52% is considered a favorable matchup.

Do matchup win rates change every patch?

Yes. Champion buffs, nerfs, item changes, and meta shifts can all affect matchup win rates. Our data updates with each new patch.

Should I always pick the counter champion?

Not necessarily. Comfort and experience on a champion often matter more than counter-picking, especially below Diamond. A 2-3% win rate difference is easily overcome by champion mastery.

What rank is the matchup data from?

All matchup data is sourced from Emerald+ ranked games to ensure the data reflects skilled play. Lower elo matchups can differ significantly.

Patch 26.9 Data

Champion Matchups

Pick two champions and see who wins. Win rates, counters, and tips powered by live ranked data.

Champion 1

Kayn

Champion 2

Master Yi

48.6%

Kayn win rate vs Master Yi

Skill matchup — could go either way

2,230

Games Analyzed

48.6%

Kayn WR

51.4%

Master Yi WR

-111

Avg Gold Diff @15

Power Spike Timeline

Kayn Level 6

Master Yi Level 6

Kayn 1 item

Kayn Form transform

Master Yi 2 items

Master Yi 3 items

How to Play This Matchup

Power Curve

Kayn is strongest mid game while Master Yi peaks late game. Play around your power window.

Armor Rush

Both champions deal physical damage. Whoever builds armor first (Plated Steelcaps, Bramble Vest) gets a huge advantage in trades.

Hit and Run

Kayn needs to combo and back off. Don't stay in extended trades against Master Yi's sustained damage. Short trades, then disengage.

Exploit Kayn's Weakness

Kayn's main weakness: Pre-form weak, wrong form = bad, early invades. Play around this to maximize your advantage.

Kayn Win Condition

Transform into assassin or drain tank, wall walk ganks

Master Yi Win Condition

Scale, Q resets in teamfights, R makes untargetable

Recommended Items

Kayn

Eclipse

Core

Build every game

Black Cleaver

Core

Build every game

Death's Dance

Core

Build every game

Plated Steelcaps

Defensive

Armor boots vs Master Yi's AD damage

Bramble Vest

Counter

Grievous wounds + armor vs Master Yi's sustain/autos

Master Yi

Blade of the Ruined King

Core

Build every game

Guinsoo's Rageblade

Core

Build every game

Wit's End

Core

Build every game

Plated Steelcaps

Defensive

Armor boots vs Kayn's AD damage

Death's Dance

Defensive

Bleed passive reduces burst, heal on takedown

Kayn's Worst Matchups

Master Yi's Worst Matchups

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