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

Irelia

Champion 2

Katarina

51.8%

Irelia win rate vs Katarina

Skill matchup — could go either way

738

Games Analyzed

51.8%

Irelia WR

48.2%

Katarina WR

+140

Avg Gold Diff @15

Power Spike Timeline

Irelia Level 2

Katarina Level 3

Irelia Level 5

Katarina Level 6

Irelia BORK

Katarina 1 item

How to Play This Matchup

Power Curve

Irelia is strongest early game while Katarina peaks mid game. Play around your power window.

Mixed Resistances

Irelia deals AD damage while Katarina deals Mixed. Build resistances accordingly Ã¢â‚¬â€ don't stack the wrong type.

Exploit Katarina's Weakness

Katarina's main weakness: Hard CC interrupts ult, losing lane, no resets. Play around this to maximize your advantage.

Irelia Win Condition

Stack passive on minions, all-in with 4 stacks

Katarina Win Condition

Roam, get resets, snowball through kills

Recommended Items

Irelia

Blade of the Ruined King

Core

Build every game

Trinity Force

Core

Build every game

Wit's End

Core

Build every game

Katarina

Hextech Rocketbelt

Core

Build every game

Nashor's Tooth

Core

Build every game

Zhonya's

Core

Build every game

Plated Steelcaps

Defensive

Armor boots vs Irelia's AD damage

Irelia's Worst Matchups

Katarina's Worst Matchups

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