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

Jarvan IV

50.9%

Amumu win rate vs Jarvan IV

Skill matchup — could go either way

530

Games Analyzed

50.9%

Amumu WR

49.1%

Jarvan IV WR

+75

Avg Gold Diff @15

Power Spike Timeline

Jarvan IV Level 2

Amumu Level 3

Amumu Level 6

Jarvan IV Level 6

Amumu 1 item

Jarvan IV 1 item

How to Play This Matchup

Power Curve

Amumu is strongest mid game while Jarvan IV peaks early game. Play around your power window.

Mixed Resistances

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

Mirror Playstyle

Both champions play a all-in style. The one with better execution and itemization wins. Focus on spacing and cooldown tracking.

Exploit Jarvan IV's Weakness

Jarvan IV's main weakness: R traps allies too, falls off, squishy if damage build. Play around this to maximize your advantage.

Amumu Win Condition

Double Q engage, R AoE stun wins teamfights

Jarvan IV Win Condition

E+Q combo gank, R traps carries, flag aura

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 Jarvan IV's AD damage

Jarvan IV

Eclipse

Core

Build every game

Black Cleaver

Core

Build every game

Sterak's Gage

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

Jarvan IV's Worst Matchups

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