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

Senna

51.6%

Kog'Maw win rate vs Senna

Skill matchup — could go either way

221

Games Analyzed

51.6%

Kog'Maw WR

48.4%

Senna WR

+126

Avg Gold Diff @15

Power Spike Timeline

Senna Level 1

Kog'Maw Level 6

Senna 1 item

Senna Infinite scaling

Kog'Maw 2 items

Kog'Maw 3 items

How to Play This Matchup

Power Curve

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

Mixed Resistances

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

Exploit Senna's Weakness

Senna's main weakness: All-in, short range early, squishy. Play around this to maximize your advantage.

Kog'Maw Win Condition

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

Senna Win Condition

Stack souls for infinite range/crit, global R heal/damage

Recommended Items

Kog'Maw

Guinsoo's Rageblade

Core

Build every game

Blade of the Ruined King

Core

Build every game

Runaan's Hurricane

Core

Build every game

Plated Steelcaps

Defensive

Armor boots vs Senna's AD damage

Bramble Vest

Counter

Grievous wounds + armor vs Senna's sustain/autos

Senna

Eclipse

Core

Build every game

Rapid Firecannon

Core

Build every game

Infinity Edge

Core

Build every game

Kog'Maw's Worst Matchups

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