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

Jax

Champion 2

Karthus

39.3%

Jax win rate vs Karthus

Karthus hard counters Jax

191

Games Analyzed

39.3%

Jax WR

60.7%

Karthus WR

-858

Avg Gold Diff @15

Power Spike Timeline

Jax Level 6

Karthus Level 6

Jax Trinity Force

Karthus 1 item

Jax 2 items

Karthus 3 items

How to Play This Matchup

Power Curve

Jax is strongest late game while Karthus peaks late game. Play around your power window.

Mixed Resistances

Jax deals Mixed damage while Karthus deals AP. Build resistances accordingly Ã¢â‚¬â€ don't stack the wrong type.

Mirror Playstyle

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

Range Advantage

Karthus has range advantage. Jax should look for short trades when Karthus uses abilities on the wave. Freeze near your tower and wait for jungle help or an all-in window.

Exploit Jax's Weakness

Jax's main weakness: Early game, ranged poke, team CC. Play around this to maximize your advantage.

Jax Win Condition

Scale into unstoppable splitpusher, E blocks auto-attackers

Karthus Win Condition

R global damage, passive keeps dealing damage after death

Recommended Items

Jax