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

Aurelion Sol

Champion 2

Cassiopeia

54.0%

Aurelion Sol win rate vs Cassiopeia

Aurelion Sol has the edge

111

Games Analyzed

54.0%

Aurelion Sol WR

46.0%

Cassiopeia WR

+323

Avg Gold Diff @15

Power Spike Timeline

Cassiopeia Level 2

Aurelion Sol Level 6

Cassiopeia Level 6

Aurelion Sol 1 item

Aurelion Sol 75 stacks

Cassiopeia 2 items

How to Play This Matchup

Power Curve

Aurelion Sol is strongest late game while Cassiopeia peaks late game. Play around your power window.

MR Priority

Both deal magic damage. An early Null-Magic Mantle or Mercury's Treads can swing the lane. Hexdrinker is also an option for AD champs.

Mirror Playstyle

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

Exploit Cassiopeia's Weakness

Cassiopeia's main weakness: Burst, hard engage, mana early. Play around this to maximize your advantage.

Aurelion Sol Win Condition

Stack passive, scale into infinite-range mage

Cassiopeia Win Condition

E spam DPS, R stun if facing, no boots = more AP

Recommended Items

Aurelion Sol

Rod of Ages

Core

Build every game

Liandry's Anguish

Core

Build every game

Rabadon's

Core

Build every game

Mercury's Treads

Defensive

MR + tenacity vs Cassiopeia's AP damage and CC

Banshee's Veil

Counter

Spell shield blocks Cassiopeia's engage tool

Cassiopeia

Archangel's Staff

Core

Build every game

Liandry's Anguish

Core

Build every game

Rabadon's

Core

Build every game

Mercury's Treads

Defensive

MR + tenacity vs Aurelion Sol's AP damage and CC

Banshee's Veil

Counter

Spell shield blocks Aurelion Sol's engage tool

Aurelion Sol's Worst Matchups

Cassiopeia's Worst Matchups

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