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

Kog'Maw

Champion 2

Karthus

45.2%

Kog'Maw win rate vs Karthus

Karthus has the edge

100

Games Analyzed

45.2%

Kog'Maw WR

54.8%

Karthus WR

-380

Avg Gold Diff @15

Power Spike Timeline

Kog'Maw Level 6

Karthus Level 6

Karthus 1 item

Kog'Maw 2 items

Kog'Maw 3 items

Karthus 3 items

How to Play This Matchup

Power Curve

Kog'Maw is strongest late game while Karthus peaks late game. Play around your power window.

Mixed Resistances

Kog'Maw 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.

Exploit Kog'Maw's Weakness

Kog'Maw's main weakness: No mobility, assassins, needs support peel. Play around this to maximize your advantage.

Kog'Maw Win Condition

W range + % HP shred, melt tanks, needs peel

Karthus Win Condition

R global damage, passive keeps dealing damage after death