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

Kai'Sa

Champion 2

Vayne

48.8%

Kai'Sa win rate vs Vayne

Skill matchup — could go either way

2,899

Games Analyzed

48.8%

Kai'Sa WR

51.2%

Vayne WR

-95

Avg Gold Diff @15

Power Spike Timeline

Kai'Sa Level 6

Vayne Level 6

Vayne BORK

Kai'Sa Q evolve

Kai'Sa 2 items

Vayne 3 items

How to Play This Matchup

Power Curve

Kai'Sa is strongest mid game while Vayne peaks late game. Play around your power window.

Mixed Resistances

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

Hit and Run

Kai'Sa needs to combo and back off. Don't stay in extended trades against Vayne's sustained damage. Short trades, then disengage.

Exploit Kai'Sa's Weakness

Kai'Sa's main weakness: Short range, weak early, needs evolves to function. Play around this to maximize your advantage.

Kai'Sa Win Condition

Evolve abilities, R into backline or R for safety, hybrid damage

Vayne Win Condition

Scale, shred tanks with W true damage, kite with R+Q

Recommended Items

Kai'Sa

Kraken Slayer

Core

Build every game

Nashor's Tooth

Core

Build every game

Rabadon's

Core

Build every game

Plated Steelcaps

Defensive

Armor boots vs Vayne's AD damage

Bramble Vest

Counter

Grievous wounds + armor vs Vayne's sustain/autos

Vayne

Blade of the Ruined King

Core

Build every game

Guinsoo's Rageblade

Core

Build every game

Wit's End

Core

Build every game

Kai'Sa's Worst Matchups

Vayne's Worst Matchups

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