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

Amumu

Champion 2

Master Yi

48.6%

Amumu win rate vs Master Yi

Skill matchup — could go either way

632

Games Analyzed

48.6%

Amumu WR

51.4%

Master Yi WR

-108

Avg Gold Diff @15

Power Spike Timeline

Amumu Level 3

Amumu Level 6

Master Yi Level 6

Amumu 1 item

Master Yi 2 items

Master Yi 3 items

How to Play This Matchup

Power Curve

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

Mixed Resistances

Amumu deals AP damage while Master Yi deals AD. Build resistances accordingly Ã¢â‚¬â€ don't stack the wrong type.

Exploit Amumu's Weakness

Amumu's main weakness: Invades, early dueling, counter-jungling. Play around this to maximize your advantage.

Amumu Win Condition

Double Q engage, R AoE stun wins teamfights

Master Yi Win Condition

Scale, Q resets in teamfights, R makes untargetable

Recommended Items

Amumu

Sunfire Aegis

Core

Build every game

Thornmail

Core

Build every game

Gargoyle Stoneplate

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

Mercury's Treads

Defensive

MR + tenacity vs Amumu's AP damage and CC

Hexdrinker

Counter

Magic damage shield vs Amumu's burst

Amumu's Worst Matchups

Master Yi's Worst Matchups

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